Who bet on "US Open ATP: Jakub Mensik vs Learner Tien" — Polymarket whale activity
5 whale wallets moved $96K through this market in the 30 days to 2026-09-06, across 5 trades of $10,000 or more. 75% of their buy volume went to Learner Tien, at a volume-weighted entry of 45¢. The market last traded Learner Tien at 99.9¢.
- $96K
- whale volume
- 5
- whale wallets
- 5
- fills ≥ $10K
- 33%
- top wallet share
where the whale money went
Learner Tien
3 wallets bought at an average of 45¢
last traded 99.9¢ on 2026-09-06
Jakub Mensik
1 wallet bought at an average of 58¢
last traded 38¢ on 2026-09-06
how to read this
The flow is broad rather than concentrated: 5 whale wallets put 75% of their buy volume on the same side, with the largest single wallet at 33%. 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 54 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 — Learner Tien last traded at 99.9¢ on 2026-09-06 — so this page is a record of how large wallets positioned while the question was still open.
biggest whale fills (5)
| date | wallet | side | outcome | size | price |
|---|---|---|---|---|---|
| 2026-09-06 | 0xef1b…8697 | SELL | Learner Tien | $35K | 99.9¢ |
| 2026-09-06 | 0x7568…2ce1 | BUY | Learner Tien | $20K | 44¢ |
| 2026-09-06 | 0xd9bf…6c60 | BUY | Jakub Mensik | $15K | 58¢ |
| 2026-09-06 | 0x78be…bde0 | BUY | Learner Tien | $15K | 48¢ |
| 2026-09-06 | 0x3dfb…abaf | BUY | Learner Tien | $11K | 46¢ |
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.