Math for traders.
No login. No paywall. Bring your numbers, share the URL.
How many shares (or contracts) to buy, given your account, entry, stop, and risk %.
Entry, stop, target → R:R ratio and the win rate you need to break even.
Win rate, average win, average loss → expected value per trade.
Optimal bet sizing: f* = W − (1 − W) / R. Most traders use a fraction of full Kelly.
Starting capital, return rate, number of periods → final value and growth curve.
How many Rs (units of initial risk) a closed trade actually made or lost.
A 50% drawdown needs a 100% gain to recover. See the full curve.
Compound annual growth rate between a starting and ending account value.
Long call, long put, covered call, iron condor, butterfly, straddle, calendar, diagonal — payoff charts, breakevens, max P&L, all derived from the same engine the dashboard uses for real trades.