Strategy backtester

Test any of 20 strategies on any ticker — long, short, or both — against free historical prices, and compare to buy & hold. Set trading cost and a stop-loss for a realistic run. Historical simulation only (dividends not modeled); past performance is not indicative of future results, and this is analysis, not advice.

Fast MASlow MAFastSlowSignalRSI lenBuy<Sell>PeriodStd×Lookbackno parametersMorning momentum: breakout → pullback holds → confirmation. Fixed rules, no parameters; real 0DTE option prices. Ignores the cost/stop/range fields below. Best on SPY/QQQ/IWM.
Direction lets you trade short too. Cost = bps per trade; stop-loss exits after that % adverse move (0 = off). "Compare all" runs every strategy.
-99.6%
Total Return
$41
Ending Value
-98.6%
CAGR
-99.8%
Max Drawdown
-1.08
Sharpe
14%
Win Rate
7
Trades
85%
Time in Market
ASTX · SMA Crossover Long & Short turned $10,000 into $41 (-99.6%) vs buy & hold $1,507 (-84.9%) over 2025-07-11→2026-10-23 — it trailed buy & hold by 14.7%, worst drawdown 100% (vs 96%) · 4 short trades.

Equity curve — $10,000 invested

325 trading days
+272%-100%■ strategy■ buy & hold

Recent trades

long & short round-trips
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