Polymarket Whale Tracker

Tracking a whale is trivial; every Polymarket wallet is public. The hard part, and the part that determines whether the tracking is worth anything, is checking whether the whale's record separates from luck before you act on it. Convexly's free wallet check does that read on any public 0x address: realized entry edge with a bootstrap 95% interval, a 30-resolved-position readability floor, and a concentration screen. First wallet free, no signup; more wallets free with an account.

Why big profit is not evidence of forecasting skill

The intuition a whale tracker sells is that big profits imply good judgment. Prediction-market profit is fat-tailed, so position size and event selection move a profit figure far more than forecasting accuracy does. Across the 8,656-wallet Polymarket cohort, the rank correlation between Brier score and realized profit is +0.148: calibration barely orders the leaderboard at all.

We published a per-wallet calibration audit of 100 named accounts in April 2026 and withdrew it on 9 August 2026. Its per-account statistics were computed on trade histories capped at 2,000 fills, 85 of the 100 published rows sat exactly at that cap, and on one wallet the published row showed 8 resolved positions where our reconciled full-chain read holds 4,954. Nothing from that work, per account or in aggregate, should be cited.

One event can wear a track record

A single resolved event can carry almost all of a wallet's realized profit and still read as a track record on a tracker feed. Nothing in the feed separates a wallet that was right many times from a wallet that was right once, large. When one resolved event dominates a record, the record cannot be separated from that one outcome, and no amount of additional volume repairs the read.

Clustering makes this worse, not better. When several large wallets enter the same side of the same event inside a short window, a tracker feed shows that as several independent whales agreeing. It is closer to one bet expressed several times. Mirroring the cluster inherits the concentration, not the judgment.

The three checks that come before acting

1. Realized entry edge with its interval. Did the whale's entries resolve true more often than the prices it paid implied? Only a bootstrap 95% interval that clears zero on the positive side is consistent with an edge on the record. A point estimate without an interval is a screenshot.
2. The 30-resolved-position floor. Below 30 resolved positions the interval is too wide for any verdict, and the honest output is “too few resolved trades to read”. Whale-sized positions do not lower the floor; sample size is about counts, not dollars.
3. The concentration note. If one event is at least 60% of the net result, the verdict carries the concentrated style note: the per-position edge can be clean while the dollar outcome rode on one event.

Run all three on any whale in about 30 seconds with the free wallet check. Most records, whale-sized included, read “cannot tell”, and that is the answer working as intended: it stops you from paying for conviction that the data does not contain.

Diagnostics on public Polymarket records, not investment advice; a past read is not a forecast.