Kramma
04

Performance audit

Am I good, and am I safe, answered for any Polymarket wallet from public data. No account, no API key, nothing to install.

Scoring a forecast requires knowing what someone believed before the outcome, which is why every other tool asks traders to log a probability against each position and then wait dozens of trades to learn anything. That step is unnecessary here. Every fill on Polymarket settles on Polygon with a price and a timestamp attached, so the record already exists: the price paid is the probability revealed.

Brier score
0.2212
across 548 resolved positions · lower is better
Skill vs own base rate
+12%
beating a trader who only knew how often they win
Calibration error
2.1pp
average gap between price paid and what happened
Win rate
50%
273 of 548 paid out

Am I good

Each row is a band of entry prices. Paid is the average price actually paid, which is the probability the wallet revealed by buying. Happened is how often those positions paid out. A well-calibrated trader has the two columns tracking each other.

Entry bandPositionsPaidHappenedGap
0–10%39%0%−9pp
10–25%3618%25%+7pp
25–40%13033%32%−1pp
40–60%23749%50%+1pp
60–75%11766%70%+4pp
75–90%2579%88%+9pp

A positive gap means the wallet was under-confident in that band, it won more often than the price it paid implied. Negative means over-confident.

Am I safe

Open exposure
$17.5K
6 open positions
Largest position
52%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$700
against $17.5K of open value

52% of open capital sits in a single contract. A binary settles to one dollar or to nothing, so concentration here is not a question of style: a single adverse resolution takes that share of the book with it.

The resolved record

Every settled position, rebuilt from on-chain fills. Realised $91.1K across 548 positions, with $216 of entry fees paid.

MarketPaidResultSizeP&L
Spread: AC Milan (-1.5) — Venezia FC0.5500lost223−$122
Will AC Milan win on 2026-08-28? — No0.3000lost4,082−$1.2K
Golden State Valkyries vs. New York Liberty — New York Liberty0.5599lost1,791−$1.0K
Will RC Celta de Vigo win on 2026-08-16? — Yes0.5000lost750−$375
Spread: FC Barcelona (-1.5) — FC Barcelona0.5400won4,000$1.8K
Toronto Tempo vs. Seattle Storm — Seattle Storm0.6488won254$89
AFC Ajax vs. FC Sion: O/U 2.5 — Over0.6900won20$6
Washington Mystics vs. Phoenix Mercury — Phoenix Mercury0.4500lost394−$177
Will Real Salt Lake win on 2026-08-25? — Yes0.4094lost1,445−$592
Will Chicago Fire FC win on 2026-08-25? — Yes0.3921lost1,809−$709
Will Nottingham Forest FC win on 2026-08-25? — Yes0.4300lost25,000−$10.8K
Will Southampton FC win on 2026-08-25? — Yes0.3800lost9,083−$3.5K
Will Cardiff City FC win on 2026-08-25? — Yes0.3600lost12,100−$4.4K
Seattle Storm vs. Dallas Wings — Dallas Wings0.7300won68$18
Paris Saint-Germain FC vs. Stade Rennais FC 1901: O/U 3.5 — Under0.5300lost6−$3
Will Paris Saint-Germain FC win on 2026-08-23? — No0.3400won2,235$1.5K
Will Feyenoord Rotterdam win on 2026-08-23? — Yes0.6782won110$35
Will Cardiff City FC win on 2026-08-22? — Yes0.2500lost13−$3
Will Derby County FC win on 2026-08-22? — No0.5100won178$87
Will Millwall FC win on 2026-08-22? — No0.5100lost115−$59
Will Norwich City FC win on 2026-08-22? — Yes0.2475lost153−$38
Will Sport Lisboa e Benfica win on 2026-08-20? — Yes0.7751won1,472$331
Will RSC Anderlecht win on 2026-08-20? — No0.5500lost293−$161
Los Angeles Sparks vs. Connecticut Sun — Los Angeles Sparks0.5400lost8,805−$4.8K
Will FC Barcelona win on 2026-08-16? — Yes0.6037won532$211
Will IK Sirius win on 2026-08-15? — No0.5500won228$103
Will CA Belgrano win on 2026-08-15? — Yes0.5000won6$3
Will IF Elfsborg win on 2026-08-14? — Yes0.5097won150$73
Will Nashville SC win on 2026-08-12? — No0.5115won277$136
Will CF Monterrey win on 2026-08-12? — Yes0.2590won100$74
Will Deportivo Toluca FC win on 2026-08-12? — Yes0.6412won10,239$3.7K
Spread: Deportivo Toluca FC (-1.5) — Deportivo Toluca FC0.3554won278$179
Will Tigres de la UANL win on 2026-08-11? — Yes0.5700lost102−$58
Will Columbus Crew win on 2026-08-11? — Yes0.5800lost200−$116
Will FK Crvena zvezda win on 2026-08-11? — Yes0.6862lost145−$100
Will Seattle Sounders FC win on 2026-08-09? — Yes0.5195won5,773$2.8K
Will Seattle Sounders FC win on 2026-08-09? — No0.5285lost4,434−$2.3K
Dallas Wings vs. Minnesota Lynx — Minnesota Lynx0.6947won4,814$1.5K
Las Vegas Aces vs. New York Liberty — New York Liberty0.7758won17,258$3.9K
Will Cruzeiro EC win on 2026-08-09? — Yes0.5700won2,153$926
Will 1. FC Kaiserslautern win on 2026-08-08? — Yes0.1600lost4,040−$646
Indiana Fever vs. Chicago Sky — Chicago Sky0.3100lost15−$5
Golden State Valkyries vs. Dallas Wings — Golden State Valkyries0.5000won300$150
Atlanta Dream vs. Washington Mystics — Atlanta Dream0.6100lost27−$16
Los Angeles Sparks vs. Chicago Sky — Chicago Sky0.5700won41$18
Will Deportivo Toluca FC win on 2026-08-05? — Yes0.6879won1,500$468
Spread: Deportivo Toluca FC (-1.5) — Deportivo Toluca FC0.4400won125$70
Seattle Storm vs. New York Liberty — Seattle Storm0.1743lost536−$94
Will SK Sturm Graz win on 2026-08-01? — Yes0.4900lost3,916−$1.9K
Will Aarhus GF win on 2026-08-01? — No0.5400won47$22
New York Liberty vs. Las Vegas Aces — Las Vegas Aces0.6100won31$12
Will Malmo FF win on 2026-07-26? — No0.4900won19$10
Will Dinamo 1948 win on 2026-07-25? — Yes0.3565won7,190$4.6K
New York Liberty vs. Toronto Tempo — Toronto Tempo0.3000won8,139$5.7K
Norway vs. England: O/U 2.5 — Under0.4450won230$128
Will FK Dynamo Kyiv win on 2026-07-09? — Yes0.5100lost24−$12
Will Brazil win on 2026-07-05? — No0.4900won10,000$5.1K
Will Switzerland win on 2026-07-02? — No0.5225lost308−$161
Will Argentina win on 2026-07-03? — No0.1400won25,000$21.5K
Will Spain win on 2026-07-02? — No0.2600lost15,000−$3.9K

Swipe the table sideways to see every column.

Polymarket only. Kalshi is a regulated exchange with a private database, its per-account endpoints require the account holder's own credentials, so there is no equivalent public record to read. Method →