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Arbitrage Scanner

Cross-market scanner detecting risk-free arbitrage opportunities and high expected-value bets across sportsbooks and prediction markets.

Updated: Friday, April 24, 2026

Events Analyzed

Arb Found

Value Bets

Polymarket

Data Sources

Arbitrage Opportunities

12 risk-free arbs detected across 30 events

outrightArb

Kharg Island no longer under Iranian control by...?

+208.17%

OutcomeBest OddsStake %

Kharg Island no longer under Iranian control by June 30?

Polymarket

6.25x

49.3%

Kharg Island no longer under Iranian control by May 31?

Polymarket

8.00x

38.5%

Kharg Island no longer under Iranian control by April 30?

Polymarket

25.32x

12.2%

Showing top 3 of 3 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Netanyahu out by...?

+97.82%

OutcomeBest OddsStake %

Netanyahu out by end of 2026?

Polymarket

2.30x

86.0%

Netanyahu out by June 30?

Polymarket

15.38x

12.9%

Netanyahu out by April 30?

Polymarket

181.82x

1.1%

Showing top 3 of 3 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Democratic Presidential Nominee 2028

+28.37%

OutcomeBest OddsStake %

Will Gavin Newsom win the 2028 Democratic presidential nomination?

Polymarket

3.81x

33.7%

Will Alexandria Ocasio-Cortez win the 2028 Democratic presidential nomination?

Polymarket

11.98x

10.7%

Will Kamala Harris win the 2028 Democratic presidential nomination?

Polymarket

13.07x

9.8%

Showing top 3 of 20 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Presidential Election Winner 2028

+22.93%

OutcomeBest OddsStake %

Will JD Vance win the 2028 US Presidential Election?

Polymarket

5.33x

23.1%

Will Gavin Newsom win the 2028 US Presidential Election?

Polymarket

5.80x

21.2%

Will Marco Rubio win the 2028 US Presidential Election?

Polymarket

9.48x

13.0%

Showing top 3 of 20 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Republican Presidential Nominee 2028

+15.54%

OutcomeBest OddsStake %

Will J.D. Vance win the 2028 Republican presidential nomination?

Polymarket

2.53x

45.6%

Will Marco Rubio win the 2028 Republican presidential nomination?

Polymarket

4.93x

23.4%

Will Tucker Carlson win the 2028 Republican presidential nomination?

Polymarket

18.02x

6.4%

Showing top 3 of 19 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Next French Presidential Election

+12.30%

OutcomeBest OddsStake %

Will Édouard Philippe win the 2027 French presidential election?

Polymarket

4.65x

24.1%

Will Jordan Bardella win the 2027 French presidential election?

Polymarket

4.88x

23.0%

Will Jean-Luc Mélenchon win the 2027 French presidential election?

Polymarket

11.76x

9.6%

Showing top 3 of 20 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

2026 FIFA World Cup Winner

+6.61%

OutcomeBest OddsStake %

Will France win the 2026 FIFA World Cup?

Polymarket

6.01x

17.8%

Will Spain win the 2026 FIFA World Cup?

Polymarket

6.37x

16.7%

Will England win the 2026 FIFA World Cup?

Polymarket

9.01x

11.8%

Showing top 3 of 20 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Brazil Presidential Election

+3.36%

OutcomeBest OddsStake %

Will Flávio Bolsonaro win the 2026 Brazilian presidential election?

Polymarket

2.59x

39.9%

Will Luiz Inácio Lula da Silva win the 2026 Brazilian presidential election?

Polymarket

2.82x

36.7%

Will Romeu Zema win the 2026 Brazilian presidential election?

Polymarket

11.70x

8.8%

Showing top 3 of 15 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

Eurovision Winner 2026

+2.56%

OutcomeBest OddsStake %

Will Finland win Eurovision 2026?

Polymarket

2.75x

37.2%

Will France win Eurovision 2026?

Polymarket

8.37x

12.3%

Will Denmark win Eurovision 2026?

Polymarket

8.85x

11.6%

Showing top 3 of 20 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

outrightArb

LALIGA Winner

+0.76%

OutcomeBest OddsStake %

Will Barcelona win the 2025–26 La Liga?

Polymarket

1.05x

95.7%

Will Real Madrid win the 2025–26 La Liga?

Polymarket

23.53x

4.3%

Showing top 3 of 2 outcomes — size bets proportionally to lock in the spread.

Bet on Stake

Value Bets

Top 1 positive expected-value opportunities — sorted by EV

EventOutcomeSourceOddsEVConsensus

Republican Presidential Nominee 2028

Will Robert F. Kennedy Jr. win the 2028 Republican presidential nomination?

Polymarket

117.65x

+2832.3%

24.9%

How It Works

Understanding arbitrage and expected value

Arbitrage Betting

An arbitrage opportunity exists when the combined implied probabilities across different bookmakers sum to less than 100%. By placing proportional bets on all outcomes, you guarantee a profit regardless of the result.

If Σ (1/odds) < 1.0 → arb exists

The profit margin equals 1 minus the sum of implied probabilities. Higher margins mean bigger guaranteed returns.

Expected Value (EV)

A value bet exists when the true probability of an outcome is higher than what the odds imply. The expected value quantifies the long-run edge per unit staked.

EV = (True Prob × Decimal Odds) − 1

Consensus probability is derived by aggregating odds from multiple sources. Positive EV means the bet is mathematically profitable over time.

Cross-market scanning

Real-time odds comparison

Updated daily

Mathematical edge

Disclaimer: Arbitrage and value bet data is provided for educational and informational purposes only. Odds change rapidly — always verify current prices before placing any bets. Past performance does not guarantee future results. Sports betting and prediction markets carry inherent risk — never stake more than you can afford to lose.