Arkham Intelligence launched its Prediction Market Elo ranking system on June 29, 2026, introducing an accuracy-based leaderboard for Polymarket traders. The new feature ranks forecasters by prediction consistency rather than profit or trading volume, with trader GardenerCx holding the top Elo score of 2389 and a 66.1% win rate across 2,512 resolved crypto markets. The system applies chess-style Elo scoring to identify traders who consistently predict correct outcomes, separating forecasting skill from capital deployment.
Arkham Intelligence Launches Chess-Style Elo Scoring for Polymarket Traders
The Prediction Market Elo feature applies an Elo/MMR-style scoring system borrowed from chess rankings and competitive gaming matchmaking. Arkham described the system at launch: "Some traders consistently win on Polymarket, bet after bet. We've created prediction market performance ratings (Elo) on Arkham Intel to help you find them."
Every correct prediction raises a trader's Elo score relative to the broader trader pool. Predictions made at lower odds carry more weight than those made at higher odds, since calling a longshot correctly signals more edge. Bet size is not factored in at all, meaning a trader with a small bankroll but a high hit rate can outrank a high-volume whale operating with lower consistency.
The Elo leaderboard is live under the Rating tab at arkm.com/predictions/leaderboard, separate from the existing PnL rankings.
GardenerCx Leads Elo Board With 2389 Rating Across 2,512 Markets
The Arkham leaderboard's Rating tab shows "GardenerCx" holding the top Elo score of 2389 as of launch. The account specializes in short-term crypto up/down markets on Polymarket, trading 5-minute price direction calls. Across 2,512 resolved markets, the account carries a 66.1% win rate and a 47% return on investment (ROI), with $51.4K in realized profit on $110.7K in capital.
Arkham noted in its launch post that GardenerCx "revolves around trading crypto up/down 5-minute markets with incredible accuracy" with a win rate of 64.3% over 2,644 bets at the time of the announcement.
The second-ranked account, "roberto73," focuses on soccer and FIFA World Cup markets, posting a 47.8% win rate across 2,835 markets with $177.8K in profit and an Elo of 2254. Third-ranked "Oliveira39" covers sports including soccer and basketball, with a 43.5% win rate over 1,817 markets and $50.1K in profit.
PnL Leaders Show Lower Elo Scores Than Accuracy-Focused Traders
The contrast between profit-based rankings and Elo standings is one of the feature's clearest signals. On the Top Traders tab filtered by 7-day performance, "blunttedge" leads with a 75% win rate across 1,027 trades and $8.3M in profit. "1two1two" follows with an 83.3% win rate across 2,435 trades and $5.6M in PnL.
"Swisstony," one of the platform's most prolific bettors, ranks third on the PnL board with a 52.9% win rate across 261,298 trades and $3.4M in recent profit. On the Elo board, the account holds a rating of 1514, placing it in the top 7% of traders but well below the accuracy leaders. Arkham noted that despite his high sizing and PnL, "his trades are less consistently profitable" compared to traders who score higher on pure forecasting accuracy.
The separation illustrates the system's intent. PnL leaderboards can be driven by position size and volume. The Elo board surfaces traders who get outcomes right consistently, regardless of how much capital they deploy.
Arkham Intelligence Expanded Prediction Market Analytics in May 2026
Arkham first launched a full Prediction Markets analytics suite in early May 2026. That suite included PnL-based leaderboards, individual trader profiles with full position history and win rate graphs, real-time trade feeds filterable by category, and deep integration with Arkham's entity database, which contains more than 3.5 billion address labels and over 800,000 verified entities.
The Elo feature builds directly on that foundation as an accuracy layer sitting alongside existing profit-based tools. Prediction market volume on platforms including Polymarket and Kalshi has grown steadily through 2026.
FAQ
What did Arkham Intelligence launch on June 29, 2026?
Arkham Intelligence launched Prediction Market Elo on June 29, 2026, a ranking system that evaluates Polymarket traders by prediction accuracy rather than profit or trading volume. The system applies chess-style Elo scoring to identify forecasters who consistently predict correct outcomes.
Who holds the top Elo score on Arkham's Polymarket leaderboard?
GardenerCx holds the top Elo score of 2389 with a 66.1% win rate across 2,512 resolved crypto markets on Polymarket. The account specializes in short-term crypto up/down markets, trading 5-minute price direction calls, and has generated $51.4K in realized profit on $110.7K in capital.
How does Elo scoring differ from PnL-based rankings on prediction markets?
Elo scoring ranks traders by prediction consistency and accuracy without factoring in bet size or capital deployed, while PnL rankings are driven by position size and total profit. A trader with a small bankroll but high hit rate can outrank a high-volume whale on the Elo board if their forecasting accuracy is superior.
