Market Over-Round 103.8% +3.8% vig / spread
Top Contender ‘SWIM’ - BTS 46.2% implied win
Max Kelly Edge +8.4% on BTS ‘SWIM’
Recommended Bet $142.00 308 shares @ 46¢

Contract Board & Subjective Divergence

Click any row to inspect payoff matrix & hedge calculations. Teal bar is market probability; orange tick is your model.
Market Price User Est

Inspector: ‘SWIM’ (BTS) +6.8% EV

Contract Price: 46¢ ($0.46)
True Prob (User): 53.0%
Gross Return on $1 share: +117.4% ($2.17)
Expected Value (EV): +$0.152 per $1.00
Suggested Stake: $142.00 (14.2% bankroll)
Traders favor this outcome. Your belief outpaces the order book, creating a mathematically advantageous entry.

Monte Carlo Category Resolution

10,000 SIMULATIONS
Winner: BTS - SWIM (4,612 wins) Exp Portfolio PnL: +$134
How Entertainment Prediction Markets Work

On decentralized prediction platforms like Polymarket, contracts for awards like MTV VMAs or the Grammys pay out $1.00 per share if an entry wins and $0.00 if it loses. The market price (e.g. 46¢) directly mirrors the crowd's implied probability (46%). When BTS’s ‘SWIM’ is cited by Pop Base as the leading contender at 46¢, traders are pricing nearly an even-chance probability of securing Song of the Year against competing nominees.

Kelly Criterion & Over-Round Mathematics

Over-round: The sum of all contract prices in a mutually exclusive category frequently totals 102%–108%. This excess represents market spread, liquidity fees, and longshot bias (the tendency for low-probability entrants to be overpriced).

Kelly Criterion: Optimal staking fraction f* = (b·p - q) / b, where b is net payout odds ( (1 - Price) / Price ), p is your estimated true probability, and q = (1 - p). Fractional Kelly (0.25x or 0.5x) prevents ruin while maximizing logarithmic geometric wealth growth.

Data Assumptions & Non-Gambling Notice

This calculator is an educational modeling sandbox for market mechanics, probability calibration, and statistical decision-making. Contract values simulate order-book states inspired by cultural entertainment events reported on social media. It does not execute live trades or constitute financial betting advice.

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