Strategy Lab

Kelly Criterion Strategy Lab
Recalculating

Every ticker below carries its own real Kelly fraction (f*), derived from its actual daily return history over the last two years - the same p/q/b variables from the Kelly Criterion formula, just measured instead of assumed. Because that edge is measured per trading day rather than per discrete trade, f* is usually a modest slice of capital - so during a strong sustained run, full exposure (buy & hold) can outpace it; where the daily edge is thin or negative, Kelly's caution is exactly the point. Pick a ticker and dial the slider to see which regime you're looking at.

Ticker
Curated list - real historical data only
Kelly fraction applied
100% = full Kelly · 50% = half-Kelly (the common practitioner discount) · 0% = sit in cash

Backtested on real historical daily closes for the selected ticker (see the data date range above the chart). Past performance does not predict future results. This is a teaching instrument, not investment advice or a recommendation to trade this way.