Who bet on "US Open ATP: Francisco Comesana vs Flavio Cobolli" — Polymarket whale activity
6 whale wallets moved $96K through this market in the 30 days to 2026-09-01, across 6 trades of $10,000 or more. 84% of their buy volume went to Flavio Cobolli, at a volume-weighted entry of 61¢. The market last traded Flavio Cobolli at 99.9¢.
- $96K
- whale volume
- 6
- whale wallets
- 6
- fills ≥ $10K
- 26%
- top wallet share
where the whale money went
Flavio Cobolli
5 wallets bought at an average of 61¢
last traded 99.9¢ on 2026-09-01
Francisco Comesana
1 wallet bought at an average of 50¢
last traded 1.0¢ on 2026-09-01
how to read this
The flow is broad rather than concentrated: 6 whale wallets put 84% of their buy volume on the same side, with the largest single wallet at 26%. Agreement at that width is harder to dismiss as one trader's idea, though it is still agreement about odds, not about the outcome.
Between those entries and the last print the market moved 39 cents toward the side whales bought. That is the distance between two observed prices, not a profit: we do not know which of these wallets are still holding.
The market has since converged — Flavio Cobolli last traded at 99.9¢ on 2026-09-01 — so this page is a record of how large wallets positioned while the question was still open.
biggest whale fills (6)
| date | wallet | side | outcome | size | price |
|---|---|---|---|---|---|
| 2026-09-01 | 0x5dab…22e1 | BUY | Flavio Cobolli | $25K | 50¢ |
| 2026-09-01 | 0xccd8…f4de | BUY | Flavio Cobolli | $19K | 93¢ |
| 2026-09-01 | 0x2c33…0563 | BUY | Francisco Comesana | $15K | 50¢ |
| 2026-09-01 | 0x8a86…4998 | BUY | Flavio Cobolli | $15K | 48¢ |
| 2026-09-01 | 0x55f5…e2a0 | BUY | Flavio Cobolli | $12K | 79¢ |
| 2026-09-01 | 0x5f65…2036 | BUY | Flavio Cobolli | $10K | 25¢ |
Each wallet links to its transaction on Polygonscan — every number on this page is checkable against the chain.
markets with similar flow
This market is one of 300 markets we track whale flow on; the week's biggest moves across all of them are on the whale index.
Whether this kind of flow actually predicts outcomes is a separate question, and we tested it on hundreds of resolved markets — read the backtest. The short version: whale flow confirms, it does not forecast.
Not financial advice · on-chain data, may be delayed · snapshot of 2026-09-21 · below our data bar, excluded from search indexing
Free tier covers the whale endpoints used on this page.