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Trader Overview
SharkbettingCom (0x15a681d447124c90dbd85be526af18ca1611bf5d) Polymarket trader turned $164K deposits into $70K PnL across 359 trades — but the real story is a 72% win rate fighting a -24% ROI that shouldn't exist on paper.
SharkbettingCom ranks 1607 on the Polymarket leaderboard as a medium-risk whale with the kind of stat sheet that makes you squint twice. 71.98% win rate. 320 markets traded. $69,904 total PnL sitting pretty at $74,880 portfolio value. Then you see the -23.95% ROI and the math breaks.
Here's what happened: one single trade — Australia vs Zimbabwe T20 World Cup — printed $72,401. That's 103% of the total PnL from one bet. Without it, this wallet is underwater. The strategy reads like disciplined category rotation (320 different markets means zero conviction concentration), but the execution screams position sizing failure. Averaging $822 per trade across $8.1M total volume looks conservative until you realize the buy-sell ratio sits at 4.97 — they're massively overweighting entries on the way down, which works until it doesn't. The worst trade — Popular Vote Winner 2024 — hit -$41,949 and they took the L instead of averaging.
The edge here is pure volume + diversification masking a fundamental problem: this Polymarket whale is chasing breadth over depth. 359 trades over an unknown timeframe (0.6 trades per day suggests months or years of grinding) with 118 open positions means capital is permanently fragmented. The 72% win rate on Polymarket is real and beats retail by miles, but it's not enough to overcome sloppy position math and one catastrophic entry on a political market. The numbers suggest someone who understands noise trading and can pick small edges consistently, then blows it on conviction bets in unfamiliar territory.
Right now: 118 open positions across the portfolio, still active on prediction markets. The risk caveat is brutal — a repeat of the 2024 Popular Vote trade (jumping heavy into binary political outcomes) or another forced liquidation from margin pressure kills this entire edge. The account shows $114K net deposits against $70K returns. At current portfolio value, they're not in survival mode yet, but the drawdown math is unforgiving. Win rate doesn't save you from sizing wrong.
whaleRisk: medium