Estimate optimal stake sizing from your edge and bankroll.
Kelly fraction f* = (bp - q) / b
with b = decimal odds - 1, p = win probability, q = 1 - p
Recommended stake = bankroll × max(f*, 0)
With a $1,000 bankroll, +100 odds, and a 55% win estimate, full Kelly is 10% or $100. Half Kelly is $50.
Use the result as a decision aid and keep the assumptions visible.
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