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Evaluating a trading track record: win rate, returns, and sample size

A high win rate can mask a few large losses, while small samples often reflect short-term luck. Understanding what a public track record actually shows helps put performance into context.

2 min read

When looking at any trading track record, headline statistics can be misleading when viewed in isolation. A high win rate often looks impressive, but the percentage of profitable trades tells only part of the story. If nine trades each gain 2% but a single losing trade drops 30%, the overall result is negative despite a 90% win rate. Conversely, a record with more losing trades than winners can generate positive overall returns if the gains on winning positions significantly outpace the losses on unsuccessful ones.

The role of sample size and randomness

Over a small number of trades — such as five, ten, or twenty bets — randomness plays a dominant role. A brief run of favorable outcomes can easily stem from broad market tailwinds, temporary volatility, or simple good fortune rather than repeatable forecasting. Statistically, small samples contain too much noise to distinguish genuine edge from chance. A track record typically requires dozens or hundreds of completed trades across changing market environments before patterns begin to reflect consistency rather than luck.

How performance is recorded on Investment Bets

On Investment Bets, public profiles and leaderboard rankings operate under specific platform mechanics designed for paper trading:

  • Leaderboard scoring: The leaderboard ranks accounts by adding up the percentage results of their closed bets, and that rank is the headline comparison between them. The bet history fills in the rest of the picture: how many bets an account has closed, how each one turned out, and its thesis, if available.
  • Public profile view: A public profile lists open bets with their entry price, current price, and target date. Closed bets show the entry price, exit price, and closed date. Any written thesis appears next to its bet, and the closed count sits alongside the all-time score line.
  • Paper trading context: All bets represent simulated positions without real money at stake. Executions do not experience order routing delays, partial fills, or cash settlement constraints.

What public records do not show

A public track record demonstrates which tickers an account selected, their entry and exit prices, closed dates, written theses, and percentage outcomes. It does not reveal whether similar decisions would be made under the psychological pressure of managing real capital, nor does it account for position sizing adjustments, borrowing costs, or capital withdrawal needs that real-world trading requires.

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These articles are educational. They describe how Investment Bets works and how markets commonly behave — what can happen and which risks to expect — so you can make your own decisions. Markets involve risk; past results do not predict future ones. Investment Bets is a paper-trading app and nothing here is financial, investment, or trading advice, a recommendation, or a solicitation.