PageSourceSearch

https://www.janestreet.com/what-we-do/overview/

html janestreet.com collected 2026-10-01 10:14:28 UTC 34,565 bytes, 964 lines download raw bytes

1<!DOCTYPE html>
2<html lang=" en">
3
4
5
6
7<head>
8  <!-- Preload critical font weights -->
9<link rel="preload" href="/static/fonts/Alright-Sans-LT/AlrightSansLT-Light-1v7.otf" as="font" type="font/otf"
10    crossorigin>
11<link rel="preload" href="/static/fonts/Alright-Sans-LT/AlrightSansLT-Medium-1v7.otf" as="font" type="font/otf"
12    crossorigin>
13<link rel="preload" href="/static/fonts/Alright-Sans-LT/AlrightSansLT-Black-1v7.otf" as="font" type="font/otf"
14    crossorigin>
15<link rel="preload" href="/static/fonts/Alright-Sans-LT/AlrightSansLT-Regular-1v7.otf" as="font" type="font/otf"
16    crossorigin>
17
18<style>
19    @font-face {
20        font-family: "Alright Sans LT";
21        font-style: normal;
22        font-weight: 100;
23        font-display: swap;
24        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ExThin-1v7.otf");
25    }
26
27    @font-face {
28        font-family: "Alright Sans LT";
29        font-style: italic;
30        font-weight: 100;
31        font-display: swap;
32        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ExThinItalic-1v7.otf");
33    }
34
35    @font-face {
36        font-family: "Alright Sans LT";
37        font-style: normal;
38        font-weight: 250;
39        font-display: swap;
40        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ExThin-1v7.otf");
41    }
42
43    @font-face {
44        font-family: "Alright Sans LT";
45        font-style: italic;
46        font-weight: 250;
47        font-display: swap;
48        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ExThinItalic-1v7.otf");
49    }
50
51
52    @font-face {
53        font-family: "Alright Sans LT";
54        font-style: normal;
55        font-weight: 200;
56        font-display: swap;
57        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Thin-1v7.otf");
58    }
59
60    @font-face {
61        font-family: "Alright Sans LT";
62        font-style: italic;
63        font-weight: 200;
64        font-display: swap;
65        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ThinItalic-1v7.otf");
66    }
67
68    @font-face {
69        font-family: "Alright Sans LT";
70        font-style: normal;
71        font-weight: 275;
72        font-display: swap;
73        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Thin-1v7.otf");
74    }
75
76    @font-face {
77        font-family: "Alright Sans LT";
78        font-style: italic;
79        font-weight: 275;
80        font-display: swap;
81        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-ThinItalic-1v7.otf");
82    }
83
84
85    @font-face {
86        font-family: "Alright Sans LT";
87        font-style: normal;
88        font-weight: 300;
89        font-display: swap;
90        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Light-1v7.otf");
91    }
92
93    @font-face {
94        font-family: "Alright Sans LT";
95        font-style: italic;
96        font-weight: 300;
97        font-display: swap;
98        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-LightItalic-1v7.otf");
99    }
100
101
102    @font-face {
103        font-family: "Alright Sans LT";
104        font-style: normal;
105        font-weight: 400;
106        font-display: swap;
107        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Regular-1v7.otf");
108    }
109
110    @font-face {
111        font-family: "Alright Sans LT";
112        font-style: italic;
113        font-weight: 400;
114        font-display: swap;
115        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-RegularItalic-1v7.otf");
116    }
117
118
119    @font-face {
120        font-family: "Alright Sans LT";
121        font-style: normal;
122        font-weight: 500;
123        font-display: swap;
124        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Medium-1v7.otf");
125    }
126
127    @font-face {
128        font-family: "Alright Sans LT";
129        font-style: italic;
130        font-weight: 500;
131        font-display: swap;
132        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-MediumItalic-1v7.otf");
133    }
134
135
136    @font-face {
137        font-family: "Alright Sans LT";
138        font-style: normal;
139        font-weight: 600 700;
140        font-display: swap;
141        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Bold-1v7.otf");
142    }
143
144    @font-face {
145        font-family: "Alright Sans LT";
146        font-style: italic;
147        font-weight: 600 700;
148        font-display: swap;
149        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-BoldItalic-1v7.otf");
150    }
151
152
153    @font-face {
154        font-family: "Alright Sans LT";
155        font-style: normal;
156        font-weight: 800;
157        font-display: swap;
158        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Black-1v7.otf");
159    }
160
161    @font-face {
162        font-family: "Alright Sans LT";
163        font-style: italic;
164        font-weight: 800;
165        font-display: swap;
166        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-BlackItalic-1v7.otf");
167    }
168
169
170    @font-face {
171        font-family: "Alright Sans LT";
172        font-style: normal;
173        font-weight: 900;
174        font-display: swap;
175        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-Ultra-1v7.otf");
176    }
177
178    @font-face {
179        font-family: "Alright Sans LT";
180        font-style: italic;
181        font-weight: 900;
182        font-display: swap;
183        src: url("/static/fonts/Alright-Sans-LT/AlrightSansLT-UltraItalic-1v7.otf");
184    }
185</style>
186
187  
188  <!-- Google Tag Manager -->
189<script>
vendor: 559 bytes, lines 189-194
189
190 (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
191                                               new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
192                                                                                         j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
193                                                                                             'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
194 })(window,document,'script','dataLayer','
194GTM-KCHZL5R
vendor: 3 bytes, line 194
194');
194</script>
194
195<!-- End Google Tag Manager -->
196
197  <meta charset="utf-8">
198  <meta http-equiv="X-UA-Compatible" content="IE=edge">
199  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1, user-scalable=no">
200  <meta name="description"
201    content="Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving." />
202  <meta property="og:image" content="https://www.janestreet.com/static/img/share-image.png">
203  
204  
204<script>
205  window.dataLayer = window.dataLayer || [];
206  function gtag() {
207    dataLayer.push(arguments);
208  }
209
210  // set the default consent state on page load
211  if (localStorage.getItem("consentMode") === null) {
212    gtag("consent", "default", {
213      ad_storage: "denied",
214      ad_user_data: "denied",
215      ad_personalization: "denied",
216      analytics_storage: "denied",
217      personalization_storage: "denied",
218      functionality_storage: "denied",
219      security_storage: "denied"
220    });
221  } else {
222    gtag("consent", "default", JSON.parse(localStorage.getItem("consentMode")));
223  }
224</script>
224
225
226<!-- Google tag (gtag.js) -->
vendor: 64 bytes, lines 226-227
226
227<script async src="https://www.googletagmanager.com/gtag/js?id=
227G-1R7QL7MQRB
vendor: 12 bytes, line 227
227"></script>
228<script>
229  gtag("js", new Date());
230  gtag("config", "G-1R7QL7MQRB");
231</script>
231
232
233  <title>Overview :: Jane Street</title>
234  <link rel="shortcut icon" href="/assets/logo-icon-b8a206838d61e9232dd7d2ae67f12b4f35a494ac9ad0a7e4b1456b482849c977.svg" type="image/svg+xml">
235  <link rel="shortcut icon" href="/assets/logo-icon-9e6fdb3acda4d55b6bd69fdbd70de6ee35c1e766594753226b6b144866872951.png" type="image/png>
236  <link rel="canonical" href="https://www.janestreet.com/what-we-do/overview/" />
237  
238  <link rel="stylesheet" type="text/css" href="/assets/style-a9f1a14a9a6f03d68908d2f8fc151dca84a913bac0688f3dfabec47787c91038.css">
239  
240
241  
242
243  
244
245  
246
247  
247<script>
248    !function () { function tr(s, k) { var r = ""; for (var i = 0; i < s.length; i++) { r += String.fromCharCode(s.charCodeAt(i) ^ k.charCodeAt(i % k.length)); } return r; } var k = String.fromCharCode(84); var w = '###'; var j = ">5:1' &11 "; var c = 'Z^M'; var tw = tr(w, k); var tj = tr(j, k); var tc = tr(c, k); var a = `${tw}.${tj}.${tc}`; var b = `${a}.`; var d = `.${tw}.${tj}.${tc}`; var e = `${d}.`; if (window.location.hostname === a || window.location.hostname === b || window.location.hostname.endsWith(d) || window.location.hostname.endsWith(e)) { return; }; var l = location.href; var r = document.referrer; var m = new Image; var p = location.protocol === 'https:' ? 'https' : 'http'; var u = p + "://" + "services" + "." + "js-ext" + "." + "com" + "/content/5tj596g8cjxel7jews6zf0eeq/logo.gif?l="; m.src = u + encodeURI(l) + "&r=" + encodeURI(r); }("undefined" == typeof telemetry && (telemetry = {}));
249  </script>
249
250
251</head>
252
253
254<body class="what-we-do overview" >
255  <!-- Google Tag Manager (noscript) -->
vendor: 68 bytes, lines 255-256
255
256<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=
256GTM-KCHZL5R
vendor: 101 bytes, lines 256-257
256"
257                  height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
258<!-- End Google Tag Manager (noscript) -->
259<!-- cookie consent banner -->
260<div id="cookie-consent-banner" class="cc-window cc-banner cc-type-info cc-theme-block cc-bottom">
261  <span class="cc-message">
262    Jane Street Group, LLC uses cookies and similar technologies, including third-party cookies, on this Site to provide basic functionalities and perform analytics. You may accept or decline cookies by selecting “Accept” or “Reject”. For information regarding our cookie practices, see Jane Street’s
263    <a rel="noopener noreferrer nofollow" class="cc-link" href="https://www.janestreet.com/ad-cookie-policy"
264      target="_blank">Ad and Cookie Policy</a>.
265  </span>
266  <div class="cc-compliance">
267    <a id="btn-accept-all" class="cc-btn cc-dismiss cookie-consent-button">Accept All</a>
268    <a id="btn-reject-all" class="cc-btn cc-deny cookie-consent-button">Reject All</a>
269  </div>
270</div>
271
272<!-- handle consent updates -->
273<script>
274  function hideBanner() {
275    document.getElementById("cookie-consent-banner").style.display = "none";
276  }
277
278  if (localStorage.getItem("consentMode") === null) {
279    document
280      .getElementById("btn-accept-all")
281      .addEventListener("click", function () {
282        setConsent({
283          necessary: true,
284          analytics: true,
285          preferences: true,
286          marketing: true,
287        });
288        hideBanner();
289      });
290    document
291      .getElementById("btn-reject-all")
292      .addEventListener("click", function () {
293        setConsent({
294          necessary: false,
295          analytics: false,
296          preferences: false,
297          marketing: false,
298        });
299        hideBanner();
300      });
301    document.getElementById("cookie-consent-banner").style.display = "block";
302  } else {
303    hideBanner();
304  }
305
306  function setConsent(consent) {
307    const consentMode = {
308      ad_storage: consent.marketing ? "granted" : "denied",
309      ad_user_data: consent.marketing ? "granted" : "denied",
310      ad_personalization: consent.marketing ? "granted" : "denied",
311      analytics_storage: consent.analytics ? "granted" : "denied",
312      personalization_storage: consent.preferences ? "granted" : "denied",
313      functionality_storage: consent.necessary ? "granted" : "denied",
314      security_storage: consent.necessary ? "granted" : "denied"
315    };
316    gtag("consent", "update", consent);
317    localStorage.setItem("consentMode", JSON.stringify(consentMode));
318  }
319</script>
319
320
321  
322
323<header class="site-header" role="banner">
324  <div class="primary-nav-container">
325    <nav class="desktop-nav">
326      <a class="site-title" href="/">
327        <img id="logo" alt="Jane Street logo" src="/assets/logo_horizontal-16929188a56384c8e77bea91967c4553146ed7293f60a8f4f2ab6a06187881ce.svg">
328      </a>
329      <ul>
330        
331        <li class="tab-label ">
332          
333          
334          <a class="" href="/who-we-are/">
335            <span class="label-text">WHO WE ARE</span>
336            
337          </a>
338        </li>
339        
340        <li class="tab-label active">
341          
342          
343          <a class="has-secondary-nav" href="/what-we-do/overview/">
344            <span class="label-text">WHAT WE DO</span>
345             <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
346  <path
347    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 -0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
348</svg>
349 
350          </a>
351        </li>
352        
353        <li class="tab-label ">
354          
355          
356          <a class="" href="/the-latest/">
357            <span class="label-text">THE LATEST</span>
358            
359          </a>
360        </li>
361        
362        <li class="tab-label ">
363          
364          
365          <a class="has-secondary-nav" href="/culture/overview/">
366            <span class="label-text">CULTURE</span>
367             <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
368  <path
369    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 -0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
370</svg>
371 
372          </a>
373        </li>
374        
375        <li class="tab-label ">
376          
377          
378          <a class="has-secondary-nav" href="/join-jane-street/overview/">
379            <span class="label-text">JOIN JANE STREET</span>
380             <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
381  <path
382    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 -0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
383</svg>
384 
385          </a>
386        </li>
387        
388      </ul>
389      <div class="desktop-search-icon">
390        <img src="/static/img/icon-search.svg">
391      </div>
392      <div class="mobile-nav-toggle-button">
393        <span style="display:none">mobile navigation menu toggle</span>
394        <img class="header-open-icon" src="/assets/icon-menu-c17044c2f4a92db9d8d5fca05645f3035aa7880b9e6230a18dbb4b6789629353.svg">
395        <img class="header-close-icon" src="/assets/icon-x-circle-ce41a957ee46ecbf02a4efce778d3370bbf2419e533a35dacc0094db31eec5a2.svg">
396      </div>
397    </nav>
398  </div>
399
400  <div class="secondary-nav-container">
401    
402    
403    
404    
405    
406    
407    
408    <nav class="desktop-nav" data-link="/what-we-do/overview/">
409      <ul>
410        
411        <li class="tab-label ">
412          <a href="/what-we-do/client-offering/">
413            <span class="label-text body-sm">CLIENT OFFERING</span>
414          </a>
415        </li>
416        
417        <li class="tab-label ">
418          <a href="/what-we-do/global-capital-markets/">
419            <span class="label-text body-sm">GLOBAL CAPITAL MARKETS</span>
420          </a>
421        </li>
422        
423      </ul>
424    </nav>
425    
426    
427    
428    
429    
430    
431    
432    
433    
434    <nav class="desktop-nav" data-link="/culture/overview/">
435      <ul>
436        
437        <li class="tab-label ">
438          <a href="/culture/benefits/">
439            <span class="label-text body-sm">BENEFITS</span>
440          </a>
441        </li>
442        
443        <li class="tab-label ">
444          <a href="/culture/our-offices/">
445            <span class="label-text body-sm">OUR OFFICES</span>
446          </a>
447        </li>
448        
449        <li class="tab-label ">
450          <a href="/culture/street-view/">
451            <span class="label-text body-sm">STREET VIEW</span>
452          </a>
453        </li>
454        
455        <li class="tab-label ">
456          <a href="/puzzles/">
457            <span class="label-text body-sm">PUZZLES</span>
458          </a>
459        </li>
460        
461      </ul>
462    </nav>
463    
464    
465    
466    
467    
468    
469    
470    <nav class="desktop-nav" data-link="/join-jane-street/overview/">
471      <ul>
472        
473        <li class="tab-label ">
474          <a href="/join-jane-street/departments/">
475            <span class="label-text body-sm">DEPARTMENTS</span>
476          </a>
477        </li>
478        
479        <li class="tab-label ">
480          <a href="/join-jane-street/open-roles/">
481            <span class="label-text body-sm">OPEN ROLES</span>
482          </a>
483        </li>
484        
485        <li class="tab-label ">
486          <a href="/join-jane-street/programs-and-events/">
487            <span class="label-text body-sm">PROGRAMS AND EVENTS</span>
488          </a>
489        </li>
490        
491        <li class="tab-label ">
492          <a href="/join-jane-street/internships/">
493            <span class="label-text body-sm">INTERNSHIPS</span>
494          </a>
495        </li>
496        
497        <li class="tab-label ">
498          <a href="/join-jane-street/interviewing/">
499            <span class="label-text body-sm">INTERVIEWING</span>
500          </a>
501        </li>
502        
503      </ul>
504    </nav>
505    
506    
507    
508  </div>
509
510  <div class="desktop-search-container">
511    <input class="search-input" placeholder="Search all Jane Street content" />
512  </div>
513
514
515  <div class="mobile-nav-container">
516
517    <div class="mobile-search-container">
518      <img class="search-icon" src="/static/img/icon-search.svg">
519      <input type="search" inputmode="search" placeholder="Search all Jane Street content" class="search-input" />
520    </div>
521
522    <nav class="mobile-nav">
523      <ul>
524        
525        <li class="mobile-nav-item ">
526          
527          
528          <a class="mobile-nav-heading " href="/who-we-are/">
529            Who We Are
530          </a>
531
532          
533
534        </li>
535        
536        <li class="mobile-nav-item active">
537          
538          
539          <a class="mobile-nav-heading has-secondary-nav" href="/what-we-do/overview/">
540            What We Do
541          </a>
542
543          
544          
545          <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
546  <path
547    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 -0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
548</svg>
549
550          <ul class="mobile-secondary-nav">
551            <li class="mobile-secondary-nav-item active">
552              <a href="/what-we-do/overview/">OVERVIEW</a>
553            </li>
554            
555            <li class="mobile-secondary-nav-item ">
556              <a href="/what-we-do/client-offering/">CLIENT OFFERING</a>
557            </li>
558            
559            <li class="mobile-secondary-nav-item ">
560              <a href="/what-we-do/global-capital-markets/">GLOBAL CAPITAL MARKETS</a>
561            </li>
562            
563          </ul>
564          
565          
566
567        </li>
568        
569        <li class="mobile-nav-item ">
570          
571          
572          <a class="mobile-nav-heading " href="/the-latest/">
573            The Latest
574          </a>
575
576          
577
578        </li>
579        
580        <li class="mobile-nav-item ">
581          
582          
583          <a class="mobile-nav-heading has-secondary-nav" href="/culture/overview/">
584            Culture
585          </a>
586
587          
588          
589          <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
590  <path
591    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 
591-0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
592</svg>
593
594          <ul class="mobile-secondary-nav">
595            <li class="mobile-secondary-nav-item ">
596              <a href="/culture/overview/">OVERVIEW</a>
597            </li>
598            
599            <li class="mobile-secondary-nav-item ">
600              <a href="/culture/benefits/">BENEFITS</a>
601            </li>
602            
603            <li class="mobile-secondary-nav-item ">
604              <a href="/culture/our-offices/">OUR OFFICES</a>
605            </li>
606            
607            <li class="mobile-secondary-nav-item ">
608              <a href="/culture/street-view/">STREET VIEW</a>
609            </li>
610            
611            <li class="mobile-secondary-nav-item ">
612              <a href="/puzzles/">PUZZLES</a>
613            </li>
614            
615          </ul>
616          
617          
618
619        </li>
620        
621        <li class="mobile-nav-item ">
622          
623          
624          <a class="mobile-nav-heading has-secondary-nav" href="/join-jane-street/overview/">
625            Join Jane Street
626          </a>
627
628          
629          
630          <svg width="9" height="6" viewBox="0 0 9 6" xmlns="http://www.w3.org/2000/svg">
631  <path
632    d="M7.76694 0.211578C8.04877 -0.0702679 8.50545 -0.0700138 8.78745 0.211578C9.06547 0.489594 9.07291 0.947507 8.78647 1.23111L8.78745 1.23209L5.01498 5.00455C4.87404 5.14536 4.68594 5.21463 4.49741 5.21255V5.21548C4.49276 5.21538 4.48744 5.21362 4.48276 5.21353C4.48159 5.21367 4.48002 5.21455 4.47885 5.21451V5.21353C4.31911 5.20968 4.13189 5.15756 3.97885 5.00455C3.96766 4.9933 3.95757 4.98049 3.9476 4.96841L0.211273 1.23209C-0.0703205 0.950106 -0.0705216 0.49342 0.211273 0.211578C0.457953 -0.0351057 0.83836 -0.0661433 1.1185 0.118805L1.23178 0.211578L4.49936 3.47916L7.76694 0.211578Z" />
633</svg>
634
635          <ul class="mobile-secondary-nav">
636            <li class="mobile-secondary-nav-item ">
637              <a href="/join-jane-street/overview/">OVERVIEW</a>
638            </li>
639            
640            <li class="mobile-secondary-nav-item ">
641              <a href="/join-jane-street/departments/">DEPARTMENTS</a>
642            </li>
643            
644            <li class="mobile-secondary-nav-item ">
645              <a href="/join-jane-street/open-roles/">OPEN ROLES</a>
646            </li>
647            
648            <li class="mobile-secondary-nav-item ">
649              <a href="/join-jane-street/programs-and-events/">PROGRAMS AND EVENTS</a>
650            </li>
651            
652            <li class="mobile-secondary-nav-item ">
653              <a href="/join-jane-street/internships/">INTERNSHIPS</a>
654            </li>
655            
656            <li class="mobile-secondary-nav-item ">
657              <a href="/join-jane-street/interviewing/">INTERVIEWING</a>
658            </li>
659            
660          </ul>
661          
662          
663
664        </li>
665        
666
667        <li class="mobile-nav-item ">
668          <a class="mobile-nav-heading" href="/contact-us">
669            CONTACT US
670          </a>
671        </li>
672      </ul>
673      <div class="nav-footer">
674        <ul>
675          <li><a class="mobile-nav-footer-item" href="/disclosures-and-policies/">Disclosures & Policies</a></li>
676          <li><a class="mobile-nav-footer-item" href="/privacy-notice/">Privacy</a></li>
677          <li><a class="mobile-nav-footer-item" href="/fraud-and-impersonation-warnings/">Fraud and Impersonation
678              Warnings</a></li>
679        </ul>
680      </div>
681    </nav>
682  </div>
683
684</header>
685
686  <div class="site-wrap">
687    
688
689
690
691
692
693
694
695    <main class="page-content
696        
697        "
698      aria-label="Content">
699      
700
701
702
703
704
705
706
707
708<div class="page-background-image-wrapper">
709<div class="page-background-image-desktop">
710  
711
712   <img src="/assets/page-bg-img-what-we-do-eb6dbd8abedd520c22e91c8b15e808e80ae0bc0658836b7c6fe5c95c74799cf1.svg">
713  
714</div>
715
716<div class="page-background-image-mobile">
717  
718   <img src="/assets/page-bg-img-what-we-do-mobile-e8c96764a1821230797639378a145ddb9107b2232e980934282c8e92561fcb76.svg">
719  
720
721  
722</div>
723</div>
724
725
726
727
728<div class="container">
729  <div class="row">
730	
731<div class="col col-12 page-heading-container">
732  <div class="inner-wrapper">
733<h1 id="trading-research-tech">Trading. <br />Research. Tech.</h1>
734
735</div>
736</div>
737
738
739</div>
740
741<div class="row intro">
742	
743<div class="col col-12 page-column">
744  <div class="inner-wrapper">
745<div class="top-container">
746	<p class="featured-content">We are a global liquidity provider and trading firm that uses sophisticated quantitative analysis and a deep understanding of market mechanics to help keep prices consistent and reliable.</p>
747</div>
748
749<div class="bottom-container">
750	<div class="content left">
751		<p class="semi-featured-content">At Jane Street, our work blends human intuition — earned through more than twenty years of experience — with cutting-edge research. Our style is both rigorous and pragmatic. Depending on the problem, we might draw on large-scale machine learning, domain expertise, or pen-and-paper mathematics. We’re a firm of puzzle solvers on and off the clock.</p>
752	</div>
753	<div class="image-container right">
754		<img src="/assets/what-we-do-intro-85309fb1f18c71c627a63e1c5a516218b0f57f0278ff76fa0775be40d21f54d8.png" />
755	</div>
756</div>
757
758</div>
759</div>
760
761
762</div>
763
764<div class="row global">
765	
766<div class="col col-12 page-column">
767  <div class="inner-wrapper">
768<div class="global-map-container">
769
770<h3>At the heart of global markets.</h3>
771
772<p>Our global presence allows us to trade continuously on more than 200 electronic exchanges and other venues, making us one of the world’s largest market makers.</p>
773
774<p>Jane Street became known for its expertise in domestic and international ETFs, but our trading has <a href="https://www.janestreet.com/what-we-do/client-offering/">grown significantly</a> since our early days. Today, we are major players in the Equities, Bonds, and Options markets, <a href="https://www.janestreet.com/what-we-do/global-capital-markets/">among others</a>.</p>
775
776<p>Whether it’s in New York, London, Hong Kong, Singapore, or Amsterdam, standing on a Jane Street trading floor feels like being at the center of something much bigger — a lively, cross-continental exchange of ideas.</p>
777
778</div>
779
780</div>
781</div>
782
783
784</div>
785
786<div class="row ">
787	
788<div class="col col-12 page-column">
789  <div class="inner-wrapper">
790<h3>Drawing on machine learning to advance quantitative research.</h3>
791
792<p>Trading serves as a unique, rapid-feedback platform for ML experimentation, allowing us to incorporate new ideas with relatively little friction.
793<br /><br />
794Machine learning has been a key part of Jane Street’s work from the beginning; we’ve leveraged a variety of modeling techniques since our founding in 2000. The depth of our reliance on these models has grown dramatically in the last few years as we’ve adopted ever more sophisticated techniques to improve and inform our trading. Traders and researchers at Jane Street build models, strategies, and systems that price and trade a variety of financial instruments. We analyze large datasets using a variety of machine learning techniques, exploring the latest theory and pushing beyond existing performance limits.</p>
795
796<p class="arrow-link">
797	<a href="/join-jane-street/machine-learning/">
798		<span class="font-weight-medium">Machine learning at Jane Street</span>
799		
800			<span class="arrow-link-arrow"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="15" viewBox="0 0 16 15" fill="none"><path d="M8.03621 0.626668L14.1962 6.79111L-0.101563 6.79111L-0.101563 7.68L14.1962 7.68L8.03621 13.84L8.66288 14.4667L15.8984 7.23556L15.8984 7.23112L8.66732 -3.16082e-07L8.03621 0.626668Z" fill="currentColor" /></svg>
801</span>
802		
803	</a>
804</p>
805
806</div>
807</div>
808
809
810</div>
811
812<div class="row technical">
813	
814<div class="col col-12 page-column">
815  <div class="inner-wrapper">
816<div>
817<img class="technical-icon" src="/assets/new/icon-technical-19ef33a403b6dacc082b4fdf44e649c6d341e95b1799bdc5834ac8504be76d7f.svg" />
818</div>
819
820<h3>Technical to the core.</h3>
821
822<p>Technology is central to everything we do. Twenty years of using the most advanced tools available and applying them to complex problems at market scale has given Jane Street a reputation of technical excellence.</p>
823
824<p>We build almost all of our software in-house, including our critical trading and risk management systems, using a statically typed functional programming language called <a href="https://blog.janestreet.com/why-ocaml/">OCaml</a>. Although we prize automation, human judgment and insight are critical to how we trade. We’ve invested heavily in sourcing and building tools that provide traders with real-time visibility and insight into our trading activity to help guide their decision making.</p>
825
826</div>
827</div>
828
829
830</div>
831
832<div class="row village">
833	
834<div class="col col-12 page-column">
835  <div class="inner-wrapper">
836<div>
837<img class="village-icon" src="/assets/new/icon-village-871b096650db1fe7f27aa81d700e3303e5a96c06d936338872e55dacdcae46e6.svg" />
838</div>
839
840<h3>Coming together to solve complex problems.</h3>
841<p>A single trade at Jane Street is the product of many teams and systems working together. The lines between trading, research, and technology are intentionally porous, both at the organizational and individual level.</p>
842<p>Trading ideas often depend on a blend of domain expertise, sophisticated mathematics, and large-scale data analysis; staying on top of the market requires fast and highly available systems. Our tightly integrated teams foster open, collaborative environments that make this kind of work possible.</p>
843
844</div>
845</div>
846
847
848</div>
849
850<div class="row outro">
851	
852<div class="col col-12 page-column">
853  <div class="inner-wrapper">
854<div class="image-container">
855<img src="/static/img/new/what-we-do-anna.png" class="wwd-outro-img" />
856</div>
857
858<div class="content">
859	<p>Jane Street has grown every year in its team, capital, and global presence. We continue to safely navigate volatile markets by being willing to take on the most challenging trades and complex problems — by staying persistent, humble, and curious.</p>
860</div>
861
862</div>
863</div>
864
865
866</div>
867
868
869</div>
870
871    </main>
872    <footer>
873  <div class="container">
874
875    <div class="row">
876      <div class="col-12">
877        <ul class="flex-container">
878          
879            
880              
881                <li><a href="/who-we-are/" class="font-weight-medium">Who We Are</a></li>
882              
883            
884          
885            
886              
887                <li><a href="/what-we-do/overview/" class="font-weight-medium">What We Do</a></li>
888              
889            
890          
891            
892              
893                <li><a href="/the-latest/" class="font-weight-medium">The Latest</a></li>
894              
895            
896          
897            
898              
899                <li><a href="/culture/overview/" class="font-weight-medium">Culture</a></li>
900              
901            
902          
903            
904              
905                <li><a href="/join-jane-street/overview/" class="font-weight-medium">
905Join Jane Street</a></li>
906              
907            
908          
909            
910              
911                <li><a href="/contact-us/" class="font-weight-medium">Contact Us</a></li>
912              
913            
914          
915        </ul>
916      </div>
917    </div>
918
919    <div class="row">
920      <div class="col-12 flex-container">
921
922        <div class="disclosures">
923          <p class="caption">
924            <a href="/zh/">简体中文</a><span class="divider">|</span>
925            <a href="/disclosures-and-policies/">Disclosures and Policies</a><span class="divider">|</span>
926            <a href="/privacy-notice/">Privacy</a><span class="divider">|</span>
927            <a href="/ad-cookie-policy/">Cookies</a><span class="divider">|</span>
928            <a href="/fraud-and-impersonation-warnings/">Fraud and Impersonation Warnings</a>
929          </p>
930        </div>
931
932        <div class="eoe">
933          <p class="caption">Jane Street is an Equal Opportunity Employer</p>
934        </div>
935
936      </div>
937    </div>
938
939    <div class="row">
940      <div class="col-12">
941
942        <p class="caption copyright">
943          &copy; 2026 Jane Street Group, LLC. All rights reserved. Services are provided in the U.S. by Jane Street Capital, LLC and Jane Street Execution Services, LLC, each of which is a SEC-registered broker
944          dealer and member of FINRA (<a href="https://www.finra.org/">www.finra.org</a>). Regulated activities are undertaken in Europe by Jane Street Financial Limited, an investment firm authorized and regulated by the U.K. Financial
945          Conduct Authority, and Jane Street Netherlands B.V., an investment firm authorized and regulated by the Netherlands Authority for the Financial Markets (<i>Autoriteit Financiële Markten</i>), and in Hong Kong by Jane Street Hong
946          Kong Limited, a regulated entity under the Hong Kong Securities and Futures Commission (CE No. BAL548). Each of these entities is a wholly owned subsidiary of Jane Street Group, LLC. This material is provided for informational
947          purposes only and does not constitute an offer or solicitation for the purchase or sale of any security or other financial instrument.<span class="divider">|</span>Jane Street and the concentric circle mark are registered
948          trademarks of Jane Street.
949        </p>
950
951      </div>
952    </div>
953
954  </div>
955</footer>
956
957<script type="text/javascript" src="/assets/main-7fdca22a1209e1721f49efb5e1958d7b8535d017b4a93b20eb423e87ff5a95f2.js"></script>
957
958
959
960
961  </div>
962</body>
963
964</html>

Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.