Prop firm

What it is

A prop firm — short for proprietary trading firm — is a company that provides trading capital to individual traders who pass an evaluation. The trader trades the firm's account; the firm keeps a percentage of the profits (commonly 80% to the trader, 20% to the firm, though the split varies); losses are absorbed by the firm up to a defined drawdown limit, at which point the trader loses access to the account.

In the institutional sense, prop firms have existed for decades — traditional desks at Susquehanna, Jane Street, DRW, and many others hire traders, train them, and put them on firm capital. The modern retail prop firm is a different and much more recent product: an online business that sells evaluation challenges (typically $50–$500), and traders who pass the evaluation according to a defined ruleset are funded with a simulated account that pays out real profits.

In the futures retail prop space — which is the relevant flavor for Sierra Chart users — the dominant firms today include Apex Trader Funding, Topstep, MyFundedFutures (MFFU), Tradeify, and TakeProfit. Each has its own evaluation rules, drawdown structure, payout schedule, and contract allowances.

Why it matters

Prop firms changed the access economics of futures trading. Before the retail prop model, trading meaningful size on futures required either personal capital (typically $25K+ for a serious approach) or being hired by an institutional desk. Today a trader can pay a few hundred dollars for an evaluation, prove their methodology over a defined profit target without busting a daily or trailing drawdown, and trade firm capital — typically $50K to $300K of buying power.

The mechanics shape how successful prop traders structure their work:

• Drawdown discipline is everything — most prop accounts use a trailing or static drawdown that closes the account on a single bad day or week. Risk-per-trade is typically tiny relative to account size to survive variance.
• Daily-loss limits — most evaluations and funded accounts have daily-loss caps. Hitting one ends the day automatically; hitting it twice often ends the account.
• Consistency rules — some firms enforce that no single day's profit can exceed a percentage of total profit, pushing traders toward steady production rather than one-shot wins.
• Payout cycles — funded accounts have minimum hold periods and minimum profit thresholds before the first withdrawal, then regular payout windows after.

How it appears on Sierra Chart

Sierra Chart is the platform of choice for many futures prop traders. The connectivity layer supports the data feeds and brokers that most prop firms use (Rithmic for live and sim, CQG, etc.), and the platform's deep order routing tools make it well-suited to the precise execution prop trading requires. Many prop firms publish Sierra Chart connection guides specifically for their candidates.

A common Sierra Chart workflow for prop traders involves running multiple connections: one to a personal account for analysis and one to the prop sim/funded account for execution, often with a chart-copier or trade-copier study syncing orders between the two.

Common patterns / pitfalls

• Read the ruleset before paying — every firm has different drawdown mechanics, scaling rules, contract caps, and payout schedules. Subtle differences (trailing vs static drawdown, EOD vs intraday drawdown) materially change how a strategy survives.
• Reset costs add up — buying repeated resets to pass an evaluation is a common money sink for traders who haven't proved consistency on a sim first.
• Don't trade prop differently from a real account — the temptation is to oversize or chase because "it's not my money". Drawdown structures are designed to punish exactly this behavior.
• Track every fill in a journal — performance attribution across multiple accounts (personal + one or more prop accounts) is impossible without a unified journal.
• News risk is amplified — many firms have rules against holding through scheduled news; check before trading FOMC, NFP, CPI.

Related SCS studies

The Trading Journal aggregates fills across personal and prop accounts and computes P&L, R-value, MFE/MAE, and drawdown metrics per account or globally, which is the standard tooling for prop traders running multiple firms in parallel. Trade Copier replicates orders between a master account and one or more slave accounts, useful for funded traders running the same strategy across an Apex, MFFU, or Topstep account.