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1<meta name="next-size-adjust" content=""/><title>About | PropLedger</title><meta name="description" content="PropLedger is a free, cited research database for quants and retail traders: stocks, futures, commodities and prediction markets, with verified references, open-source Pine indicators and prop-firm rule calculators. Nothing sold."/><meta name="application-name" content="PropLedger"/><meta name="keywords" content="trading research library,learn ICT trading,smart money concepts,backtesting methodology,free pine script indicators,prop firm drawdown calculator,futures trading education,prediction markets research"/><link rel="canonical" href="https://prop-ledger.org/about"/><meta property="og:title" content="PropLedger â Free Trading Research Library"/><meta property="og:description" content="Free, cited trading research database: stocks, futures, commodities and prediction markets, quantitative and order-flow methods, open-source Pine indicators. Verified references, new material every weekday, nothing sold."/><meta property="og:url" content="https://prop-ledger.org"/><meta property="og:site_name" content="PropLedger"/><meta property="og:image" content="https://prop-ledger.org/api/og?title=Free+trading+research+library&type=home"/><meta property="og:image:width" content="1200"/><meta property="og:image:height" content="630"/><meta property="og:image:alt" content="Free trading research library â PropLedger"/><meta property="og:type" content="website"/><meta name="twitter:card" content="summary_large_image"/><meta name="twitter:title" content="PropLedger â Free Trading Research Library"/><meta name="twitter:description" content="Free, cited trading research database: stocks, futures, commodities and prediction markets, quantitative and order-flow methods, open-source Pine indicators. Verified references, new material every weekday, nothing sold."/><meta name="twitter:image" content="https://prop-ledger.org/api/og?title=Free+trading+research+library&type=home"/><link rel="icon" href="/icon.svg?icon.1683-17mlxbo8.svg" sizes="any" type="image/svg+xml"/>
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1</head><body class="min-h-full flex flex-col bg-background text-foreground"><div hidden=""><!--$--><!--/$--></div><!--$!--><template data-dgst="BAILOUT_TO_CLIENT_SIDE_RENDERING"></template><!--/$--><div class="mkt-light flex min-h-screen flex-col bg-bg text-text"><header class="mkt-nav fixed inset-x-0 top-0 z-50 bg-transparent"><nav class="mx-auto flex h-16 max-w-7xl items-center justify-between px-5 md:px-8"><a class="flex items-center gap-2.5" aria-label="PropLedger home" href="/"><img alt="" width="30" height="30" decoding="async" data-nimg="1" style="color:transparent" src="/logo-mark.svg"/><span class="mkt-display text-lg text-text">Prop<span class="text-accent-ink">Ledger</span></span></a><div class="hidden items-center gap-8 md:flex"><a class="mkt-link text-sm font-medium text-subtext" href="/learn">Learn</a><a class="mkt-link text-sm font-medium text-subtext" href="/tools">Tools</a><a class="mkt-link text-sm font-medium text-subtext" href="/stats">Stats</a><a class="mkt-link text-sm font-medium text-subtext" href="/about">About</a></div><div class="hidden items-center gap-3 md:flex"><a class="mkt-pill mkt-pill-primary px-5 py-2 text-sm font-semibold" href="/learn">Browse Library</a><a aria-label="Owner admin" class="mkt-link text-sm font-medium text-text opacity-60 hover:opacity-100" href="/admin">Admin</a></div><button type="button" aria-label="Toggle menu" aria-expanded="false" class="flex h-10 w-10 items-center justify-center rounded-lg border border-border text-text md:hidden"><span class="relative block h-3 w-5"><span class="absolute left-0 block h-0.5 w-5 bg-current transition-all top-0"></span><span class="absolute left-0 top-1.5 block h-0.5 w-5 bg-current transition-all"></span><span class="absolute left-0 block h-0.5 w-5 bg-current transition-all top-3"></span></span></button></nav></header><main class="flex-1"><article class="bg-bg px-5 pb-24 pt-32 md:px-8"><div class="mx-auto max-w-3xl"><h1 class="mkt-h1 text-4xl text-text md:text-6xl">A free library for traders who want<!-- --> <span class="text-accent-ink">the actual math.</span></h1><div class="mt-8 space-y-6 text-base leading-relaxed text-subtext"><p>PropLedger is a free, growing research library for futures, stock, commodity and prediction-market traders. Every weekday it adds a new paper and a new open-source Pine Script indicator, organised by market (Stocks, Futures, Commodities, Prediction Markets) and by method (Start Here, Quantitative, Order Flow & Structure, Price Action, Indicators). How papers are sourced and checked is public: see the <a href="/learn/methodology" class="mkt-link">editorial standard</a>.</p><p>The papers are written to be checked, not believed. Claims carry their assumptions, formulas and sample sizes; strategy work follows a pre-registered, anti-overfit backtesting protocol with chronological splits, realistic costs and untouched holdouts. When a test finds no edge, the paper says so.</p><p>Indicators ship with the full source, explained line by line, so you can read what they do before you put them on a chart. The prop-firm calculators load each firm's published rules â daily loss, trailing drawdown, consistency â so you can size against the real numbers instead of a guess.</p><p>Nothing here is sold. There are no accounts, no signals, no paid tiers and no promises about passing an evaluation. It is educational research on historical data, published openly.</p></div><div class="mt-10 rounded-lg border border-border bg-panel px-5 py-4 text-xs leading-relaxed text-subtext">Everything on this site is educational research on historical data. Past performance does not predict future results. 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