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 âAcceptâ or âRejectâ. For information regarding our cookie practices, see Jane Streetâs 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 â earned through more than twenty years of experience â 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. Weâre 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 worldâs 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 itâs 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 â 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 Streetâs work from the beginning; weâve 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 weâve 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. Weâve 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 â 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/">ç®ä½ä¸æ</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 © 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.