Polymarket market · Sports
Japan Women's Open: Katie Boulter vs Himeno Sakatsume
Resolved: Katie Boulter won · See it on Polymarket ↗
7 whales traded $54K on this market since Oct 19, 97% of their buying on Katie Boulter. Copying their buys off the order book we recorded about 6 minutes later would have cost 0.6¢ more per share, with 100% of the size there to buy. Katie Boulter won, with 97% of the whale buying on it. Of the 6 whales whose whole position we captured, 5 made +$18K and 1 lost −$1.7K: +$17K between them. Biggest win: Embellished-Lecture, +$11K on Katie Boulter. Biggest loss: Each-Cenotaph, −$1.7K on Himeno Sakatsume.
The whales on this market
7 whales| Whale · record | Backed | Bought | Sold | Made on it |
|---|---|---|---|---|
| Embellished-Lecture
35 settled bets Can't tell from luck |
Katie Boulter @ 69¢ | $25K | — | +$11K |
| Glaring-Salt
1,865 settled bets Can't tell from luck |
Katie Boulter @ 68¢ | $12K | — | +$5.7K |
| Illustrious-Pinecone
237 settled bets Can't tell from luck |
Katie Boulter @ 96¢ | $3.7K | $3.6K | — |
| Wide-Swordfish-Latitude
53 settled bets Worse than the odds |
Katie Boulter @ 78¢ | $4.6K | $1.1K | +$178 |
| Each-Cenotaph
44 settled bets Can't tell from luck |
Himeno Sakatsume @ 18¢ | $1.7K | — | −$1.7K |
| Soulful-Pound-Place
11 settled bets Can't tell from luck |
Katie Boulter @ 52¢ | $1.0K | — | +$960 |
| Scary-Edible
1,503 settled bets Can't tell from luck |
Katie Boulter @ 68¢ | $1.0K | — | +$486 |
Where the whale money went
-
Katie Boulter won$47K97% of whale buying · 6 buyers · $4.7K sold
-
Himeno Sakatsume lost$1.7K3% of whale buying · 1 buyer
From the whale trades we capture ($1,000+) on this market, Oct 19, 2026. Whether it resolved, and each whale's record, are from the daily run. “Made on it” is what each whale took out plus what its shares paid at the end ($1 for the winner, nothing for the rest), counting only trades we captured. A dash means it sold more than we saw it buy, so part of its position is missing and it's left out of the totals. How profit is counted.
Results and records from the run (1792479640).
More sports markets the whales bet on
All Sports →| Market | Whale money | Whales | Result | Last whale bet |
|---|---|---|---|---|
| Ningbo Open: Kamilla Rakhimova vs Marie Bouzkova | $74K | 15 | Won: Marie Bouzkova | |
| Almaty Open: Marin Cilic vs Nikoloz Basilashvili | $105K | 6 | Won: Nikoloz Basilashvili | |
| Ningbo Open: Daria Kasatkina vs Aliaksandra Sasnovich | $139K | 10 | Won: Aliaksandra Sasnovich | |
| Lyon Open: Jaime Faria vs Felix Balshaw | $71K | 17 | Won: Felix Balshaw | |
| Almaty Open: Miomir Kecmanovic vs James Duckworth | $51K | 10 | Won: James Duckworth | |
| Almaty Open: Mikhail Kukushkin vs Stefanos Sakellaridis | $150K | 12 | Won: Mikhail Kukushkin | |
| Cowboys vs. Packers | $746K | 52 | Won: Packers | |
| Will Tottenham Hotspur FC win on 2026-10-19? | $112K | 17 | Won: Yes |
The bigger picture: Does copying Polymarket whales pay? · Do Polymarket whales make money?