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Trader profile

fastball67

Market makers
Polymarket ↗PolygonscanExplorer ↗Chrome

Historical record

Market-making activity, measured as two-sided flow.

Lifetime PnL−$117.5KPolymarket leaderboard · lifetime
Buy / sell split—Loading trading flow…7 open · 0% underwater · 9 hours ago
Lifetime volume$3.7M1,000+ trades · Polymarket
Markets traded293Lifetime coverage
Edge vs entry price

Profit per $1 risked, measured against the price each position was entered at.

How this is computed
+2.5% / $95% interval −14.2% to +19.2%224 settled fills · 90d window
Sports
+3.4%n=222 settled

A category is listed from 10 settled fills upward.

This wallet is not classified as directional. Market-making and arbitrage strategies take losing legs by design, so their edge describes the payoff of that strategy rather than a judgement about outcomes.

Measured 36 minutes ago

How this record is measured

Two-sided market-making flow does not measure directional forecasting skill.

Observed activity

How this wallet provides liquidity

Only recorded trades of $1K+ are included; this is not the wallet's full history.

No category data for this wallet.

No tracked trading behavior yet.

Last loaded9 hours ago
Current position value
$18.5K
Snapshot cash PnL
−$67.2K
Concentration
50.8%
Largest share of value
Positions
39
Showing the largest 8 of 39
EventOutcomeValuePnLAvg → CurrentShares
Hangzhou Open: Dane Sweeny vs Taro Daniel
Taro Daniel · NoValue$9.4KPnL+$78Avg60¢Current60.5¢15,554.95Shares
Chengdu Open: James Duckworth vs Lorenzo Sonego
James Duckworth · YesValue$2.8KPnL+$32Avg44¢Current44.5¢6,404.12Shares
Hangzhou Open: Sho Shimabukuro vs Hugo Gaston
Hugo Gaston · NoValue$2.8KPnL+$112Avg52.3¢Current54.5¢5,120.94Shares
Hangzhou Open: Mattia Bellucci vs Kamil Majchrzak
Mattia Bellucci · YesValue$2KPnL+$67Avg43¢Current44.5¢4,461.79Shares
Hangzhou Open: Jie Cui vs Adolfo Vallejo
Jie Cui · YesValue$907PnL+$16Avg27¢Current27.5¢3,297.9Shares
Set 1 Winner: Jie Cui vs Adolfo Vallejo
Jie Cui · YesValue$303PnL+$5Avg33¢Current33.5¢905Shares
Hangzhou Open: Jaime Faria vs Terence Atmane
Terence Atmane · NoValue$298PnL+$3Avg56¢Current56.5¢527.35Shares
Winston-Salem Open: Adrian Mannarino vs Lorenzo Sonego
Adrian Mannarino · YesValue$0PnL−$5Avg40¢Current0¢13.33Shares
Showing 8 of 39 positions by current value
Results
Exposure
Loading category evidence…

Results and exposure are checked against separate coverage records.

Recent activity

Whale activity over 30 days

Tracked trades ≥$1K. Empty days keep their place in the timeline.

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Large trades

Recent large trades

Trade facts; use ? for snapshot-based explanations

About this wallet

Wallet fastball67: two-sided market-making flow, so no directional win rate is published, edge +2.5% per $1 risked (95% lower bound −14.2%, n=224 settled fills over 90 days), strongest in Sports (+3.4% over 222 fills); −$117.5K lifetime P&L, $3.7M traded, updated 2026-09-23.