8th Kelly Criterion Formula Breakdown

Example: Coeur Mining

Step 1: Define Stake: $1.00

Step 4: Define Decimal Odds of Winning: 1 + Odds of Winning

101 Wins out of 108 Total Trades, or 7/101 (.069) = 1.07 (1 + Odds of Winning)

Step 4: Define Decimal Odds of Losing: 1 + Odds of Losing

7 Losses out of 108 Total Trades, or 101/7 (14.43) = 15.43 (1 + Odds of Losing)

Step 2: Calculate Probability of Winning: 1 / Decimal Odds of Winning

1 / 1.07 = .93 (Probability of Winning)

Step 3: Calculate Probability of Losing: 1 / Decimal Odds of Losing

1/15.43 = .06 (Probability of Losing)

Step 5: Define Payout: Stake * Decimal Odds of Winning

$1 * 1.07 = $1.07

Step 6: Calculate Full Kelly Criterion: (((Payout * Probability of Winning) – Probability of Losing) / Payout) * 100

(((((1.07 * .93) - .06) / 1.07)) * 100) = 87%

Step 7: Calculate 8th Kelly Criterion: Full Kelly Criterion / 8;

.87/8 = .11 (11%)

Conclusion

One is directed to stake 11% of one’s account on Coeur Mining in an 8th Kelly Bet or 87% in a Full Kelly Bet.


Notes

Whether or not a bet is taken is determined by our Value Betting Engine.

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