Kalshi KXATPSETWINNER — ATP Set Winner Data
Every Kalshi “ATP Set Winner” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 200 trading days as day bundles, €1 per day, bought as a guest with instant download.
ATP Set Winner on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 23 captured days to 2026-09-26, from the recorded tick data — the per-day averages divide by the captured days. Buy share, quoted spread (in contract price cents, 0..1 = 100 ¢), best-bid/ask depth and Level-2 update counts are turnover-weighted over the same window.
One purchase, the whole series for a day
A series-day bundle contains every ATP Set Winner contract that was listed on Kalshi on that UTC day — traded or not — 64 contract files on the latest covered day. Each file carries the full raw feed: every trade print with price, size and side, plus Level-2 order-book updates, in the same zstd-compressed schema as our crypto venues. Event contracts quote 0..1; turnover is USD-normalized.
Coverage runs March 2026 – present — 200 trading days, 16.1 GB compressed in total. A day typically holds 145 contract files (up to 504 on the busiest day, 660 MB). Pick individual days in the shop calendar for €1 each; delivery is an instant per-file download or one archive for the whole day.
ATP Set Winner — development since capture
1,645,600 trades and $140.3M of USD turnover over 74 captured days since 2026-07-08 — record day 2026-09-03 with $7.0M, biggest single contract KXATPSETWINNER-26SEP13ZVESHE-2-ZVE (2026-09-13, $827.3K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Sep 2026 (month to date) | 19 | 600,063 | $50.3M | $2.6M | 1,319 | 119.1M | — |
| Aug 2026 | 31 | 728,423 | $63.9M | $2.1M | 2,061 | 160.2M | — |
| Jul 2026 | 24 | 317,114 | $26.1M | $1.1M | — | — | — |
Kalshi ATP Set Winner — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.
ATP Set Winner — activity by weekday
Wednesdays carry the most turnover, about $3.6M per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $2.8M | 37.2K | 3 | |
| Tuesday | $2.6M | 31.8K | 3 | |
| Wednesday | $3.6M | 45.5K | 3 | |
| Thursday | $2.8M | 30.1K | 3 | |
| Friday | $2.3M | 27.1K | 4 | |
| Saturday | $1.6M | 20.5K | 4 | |
| Sunday | $3.3M | 35.1K | 3 |
Kalshi ATP Set Winner — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.
ATP Set Winner — last 30 days in the archive
Files, size, contracts traded, trades, USD turnover, buy share, quoted spread, top-of-book depth and order-book updates per UTC day, from the recorded tick data.
| UTC day | Files | Size | Traded | Trades | Turnover | Buy share | Avg spread | Top-1 depth | L2 updates | Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-26 | 64 | 84.4 MB | 47 | 12,915 | $783.9K | 74 % | 4.11 ¢ | $4.6K | 3.3M | Buy day → | |
| 2026-09-25 | 64 | 68.6 MB | 44 | 11,436 | $686.8K | 73 % | 3.38 ¢ | $6.2K | 2.6M | Buy day → | |
| 2026-09-24 | 128 | 151 MB | 89 | 10,409 | $478.7K | 75 % | 6.91 ¢ | $3.8K | 6.0M | Buy day → | |
| 2026-09-23 | 128 | 194 MB | 81 | 13,907 | $774.1K | 78 % | 4.90 ¢ | $4.6K | 7.6M | Buy day → | |
| 2026-09-22 | 160 | 160 MB | 99 | 7,522 | $597.9K | 84 % | 8.53 ¢ | $5.6K | 6.4M | Buy day → | |
| 2026-09-21 | 128 | 11.7 MB | 24 | 129 | $12.9K | 92 % | 14.6 ¢ | $1.0K | 432.9K | Buy day → | |
| 2026-09-13 | 8 | 19.8 MB | 8 | 18,268 | $2.0M | 63 % | 2.17 ¢ | $25.1K | 724.3K | Buy day → | |
| 2026-09-12 | 14 | 65.0 MB | 14 | 12,483 | $856.3K | 60 % | 5.76 ¢ | $35.9K | 1.4M | Buy day → | |
| 2026-09-11 | 12 | 64.8 MB | 12 | 25,879 | $2.0M | 70 % | 2.00 ¢ | $6.4K | 1.9M | Buy day → | |
| 2026-09-10 | 18 | 39.6 MB | 14 | 9,903 | $1.0M | 54 % | 2.26 ¢ | $48.6K | 1.5M | Buy day → | |
| 2026-09-09 | 26 | 85.1 MB | 24 | 53,385 | $3.9M | 72 % | 3.14 ¢ | $23.8K | 3.2M | Buy day → | |
| 2026-09-08 | 40 | 49.0 MB | 31 | 34,322 | $2.6M | 72 % | 2.96 ¢ | $17.3K | 1.8M | Buy day → | |
| 2026-09-07 | 48 | 133 MB | 43 | 42,030 | $2.7M | 72 % | 3.49 ¢ | $7.6K | 5.1M | Buy day → | |
| 2026-09-06 | 74 | 149 MB | 52 | 48,903 | $4.6M | 69 % | 2.93 ¢ | $10.2K | 5.6M | Buy day → | |
| 2026-09-05 | 108 | 211 MB | 85 | 53,254 | $4.4M | 70 % | 3.92 ¢ | $14.3K | 8.0M | Buy day → | |
| 2026-09-04 | 146 | 246 MB | 97 | 52,679 | $5.1M | 67 % | 3.81 ¢ | $13.7K | 9.3M | Buy day → | |
| 2026-09-03 | 240 | 381 MB | 175 | 70,006 | $7.0M | 63 % | 6.34 ¢ | $12.4K | 14.6M | Buy day → | |
| 2026-09-02 | 294 | 614 MB | 193 | 69,059 | $6.1M | 70 % | 6.97 ¢ | $7.5K | 24.1M | Buy day → | |
| 2026-09-01 | 340 | 404 MB | 187 | 53,574 | $4.6M | 67 % | 5.13 ¢ | $10.4K | 15.4M | Buy day → | |
| 2026-08-31 | 398 | 530 MB | 205 | 69,428 | $5.7M | 67 % | 5.99 ¢ | $7.5K | 20.5M | Buy day → | |
| 2026-08-30 | 442 | 307 MB | 182 | 38,273 | $3.1M | 68 % | 4.09 ¢ | $2.9K | 11.6M | Buy day → | |
| 2026-08-29 | 392 | 58.3 MB | 45 | 3,513 | $346.8K | 78 % | 21.5 ¢ | $3.9K | 2.1M | Buy day → | |
| 2026-08-28 | 440 | 131 MB | 70 | 18,525 | $1.6M | 69 % | 8.42 ¢ | $4.4K | 3.8M | Buy day → | |
| 2026-08-27 | 382 | 301 MB | 76 | 11,929 | $916.5K | 73 % | 8.87 ¢ | $4.2K | 7.3M | Buy day → | |
| 2026-08-26 | 248 | 370 MB | 184 | 20,173 | $1.9M | 73 % | 6.72 ¢ | $4.4K | 10.6M | Buy day → | |
| 2026-08-25 | 320 | 565 MB | 191 | 32,883 | $3.2M | 70 % | 7.26 ¢ | $3.2K | 20.0M | Buy day → | |
| 2026-08-24 | 404 | 660 MB | 202 | 31,990 | $2.5M | 72 % | 5.88 ¢ | $2.5K | 25.6M | Buy day → | |
| 2026-08-23 | 360 | 110 MB | 67 | 15,753 | $1.5M | 73 % | 8.60 ¢ | $9.3K | 4.2M | Buy day → | |
| 2026-08-22 | 108 | 109 MB | 46 | 16,383 | $1.8M | 66 % | 11.0 ¢ | $7.7K | 4.2M | Buy day → | |
| 2026-08-21 | 16 | 30.0 MB | 16 | 13,213 | $1.5M | 69 % | 3.14 ¢ | $7.6K | 1.1M | Buy day → |
Traded = contracts with at least one trade that day. Buy share = taker-buy side of USD turnover. Avg spread = quoted bid-ask spread in contract price cents (0..1 = 100 ¢), weighted by turnover across the day’s contracts. Top-1 depth = mean of the best bid and best ask notional in USD, weighted by turnover. L2 updates = order-book level updates recorded across all contracts of the day. Days captured before the extended statistics show —.
Most traded ATP Set Winner contracts by day
The ten contracts with the most USD turnover per UTC day — open, high, low, close, VWAP and the outcome implied by the last print; the six previous days fold out below.
The 10 most traded ATP Set Winner contracts on 2026-09-26 — 8 closed Yes (≥ 0.97), 2 closed No (≤ 0.03): 6,118 trades, $453.7K USD turnover. The busiest contract was KXATPSETWINNER-26SEP24HALSAF-1-HAL with $63.9K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP24HALSAF-1-HAL | 0.470 | 0.990 | 0.430 | 0.990 | 0.694 | Yes | 615 | $63.9K | 63 % | buy file → |
| KXATPSETWINNER-26SEP26WONVAL-1-WON | 0.600 | 0.990 | 0.310 | 0.990 | 0.708 | Yes | 982 | $60.8K | 69 % | buy file → |
| KXATPSETWINNER-26SEP25CERDAV-1-DAV | 0.590 | 0.990 | 0.490 | 0.990 | 0.719 | Yes | 608 | $54.1K | 67 % | buy file → |
| KXATPSETWINNER-26SEP25MEDROY-1-MED | 0.720 | 0.990 | 0.420 | 0.990 | 0.715 | Yes | 547 | $52.7K | 80 % | buy file → |
| KXATPSETWINNER-26SEP26WONVAL-2-VAL | 0.440 | 0.990 | 0.110 | 0.990 | 0.556 | Yes | 939 | $50.0K | 62 % | buy file → |
| KXATPSETWINNER-26SEP26YUNMAJ-2-YUN | 0.480 | 0.740 | 0.010 | 0.010 | 0.489 | No | 509 | $39.1K | 84 % | buy file → |
| KXATPSETWINNER-26SEP25CINMUL-1-MUL | 0.530 | 0.990 | 0.280 | 0.990 | 0.674 | Yes | 403 | $34.6K | 66 % | buy file → |
| KXATPSETWINNER-26SEP26YUNMAJ-1-YUN | 0.480 | 0.990 | 0.240 | 0.990 | 0.647 | Yes | 424 | $33.6K | 83 % | buy file → |
| KXATPSETWINNER-26SEP26WONVAL-2-WON | 0.640 | 0.830 | 0.010 | 0.010 | 0.505 | No | 665 | $32.5K | 66 % | buy file → |
| KXATPSETWINNER-26SEP25CERDAV-2-DAV | 0.640 | 0.990 | 0.450 | 0.990 | 0.683 | Yes | 426 | $32.4K | 79 % | buy file → |
Prices quote 0..1 (probability of Yes). Open/high/low/close/VWAP are that UTC day’s trade prints per contract; the implied outcome reads the last print — ≥ 0.97 as Yes, ≤ 0.03 as No, anything between as still open — venues publish the official result. Buy share = taker-buy side of turnover.
2026-09-25 — 10 contracts, 5,856 trades, $408.5K turnover
The 10 most traded ATP Set Winner contracts on 2026-09-25 — 8 closed Yes (≥ 0.97), 2 closed No (≤ 0.03): 5,856 trades, $408.5K USD turnover. The busiest contract was KXATPSETWINNER-26SEP25BROSON-1-SON with $73.9K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP25BROSON-1-SON | 0.500 | 0.990 | 0.100 | 0.990 | 0.608 | Yes | 1,151 | $73.9K | 69 % | buy file → |
| KXATPSETWINNER-26SEP24FARGAS-2-GAS | 0.390 | 0.990 | 0.190 | 0.990 | 0.600 | Yes | 1,154 | $62.6K | 63 % | buy file → |
| KXATPSETWINNER-26SEP25KOPSHA-2-SHA | 0.730 | 0.990 | 0.730 | 0.990 | 0.861 | Yes | 210 | $46.0K | 63 % | buy file → |
| KXATPSETWINNER-26SEP25BROSON-2-BRO | 0.510 | 0.990 | 0.280 | 0.990 | 0.619 | Yes | 519 | $42.3K | 64 % | buy file → |
| KXATPSETWINNER-26SEP25BROSON-1-BRO | 0.540 | 0.900 | 0.010 | 0.010 | 0.488 | No | 690 | $35.1K | 78 % | buy file → |
| KXATPSETWINNER-26SEP25KOPSHA-1-SHA | 0.710 | 0.990 | 0.700 | 0.990 | 0.888 | Yes | 301 | $34.1K | 73 % | buy file → |
| KXATPSETWINNER-26SEP25TABMAN-1-MAN | 0.420 | 0.990 | 0.250 | 0.990 | 0.751 | Yes | 273 | $30.6K | 65 % | buy file → |
| KXATPSETWINNER-26SEP25JACETC-2-JAC | 0.440 | 0.990 | 0.130 | 0.990 | 0.383 | Yes | 372 | $29.6K | 75 % | buy file → |
| KXATPSETWINNER-26SEP25TABMAN-2-MAN | 0.480 | 0.990 | 0.320 | 0.990 | 0.534 | Yes | 416 | $28.7K | 75 % | buy file → |
| KXATPSETWINNER-26SEP24FARGAS-2-FAR | 0.630 | 0.880 | 0.010 | 0.010 | 0.449 | No | 770 | $25.6K | 84 % | buy file → |
2026-09-24 — 10 contracts, 3,283 trades, $252.1K turnover
The 10 most traded ATP Set Winner contracts on 2026-09-24 — 8 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 1 still open at the last print: 3,283 trades, $252.1K USD turnover. The busiest contract was KXATPSETWINNER-26SEP21SHIGAS-2-GAS with $40.1K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP21SHIGAS-2-GAS | 0.520 | 0.990 | 0.330 | 0.990 | 0.640 | Yes | 534 | $40.1K | 64 % | buy file → |
| KXATPSETWINNER-26SEP21CERZHO-2-CER | 0.650 | 0.990 | 0.500 | 0.990 | 0.857 | Yes | 273 | $38.3K | 82 % | buy file → |
| KXATPSETWINNER-26SEP24SWEDAN-1-SWE | 0.420 | 0.920 | 0.010 | 0.010 | 0.486 | No | 614 | $29.1K | 65 % | buy file → |
| KXATPSETWINNER-26SEP21CERZHO-1-CER | 0.630 | 0.990 | 0.610 | 0.990 | 0.892 | Yes | 235 | $25.7K | 87 % | buy file → |
| KXATPSETWINNER-26SEP24SWEDAN-1-DAN | 0.580 | 0.990 | 0.090 | 0.990 | 0.502 | Yes | 484 | $25.4K | 63 % | buy file → |
| KXATPSETWINNER-26SEP21BELMAJ-2-MAJ | 0.680 | 0.990 | 0.660 | 0.990 | 0.860 | Yes | 169 | $24.7K | 89 % | buy file → |
| KXATPSETWINNER-26SEP21YUNZHE-2-YUN | 0.460 | 0.990 | 0.440 | 0.990 | 0.890 | Yes | 138 | $19.7K | 20 % | buy file → |
| KXATPSETWINNER-26SEP21ZHAWON-2-WON | 0.650 | 0.990 | 0.620 | 0.990 | 0.774 | Yes | 255 | $17.6K | 85 % | buy file → |
| KXATPSETWINNER-26SEP21FARATM-2-ATM | 0.540 | 0.750 | 0.270 | 0.560 | 0.511 | open | 239 | $15.9K | 98 % | buy file → |
| KXATPSETWINNER-26SEP21SHAMAN-1-MAN | 0.310 | 0.990 | 0.060 | 0.990 | 0.602 | Yes | 342 | $15.5K | 60 % | buy file → |
2026-09-23 — 10 contracts, 6,535 trades, $404.0K turnover
The 10 most traded ATP Set Winner contracts on 2026-09-23 — 6 closed Yes (≥ 0.97), 4 closed No (≤ 0.03): 6,535 trades, $404.0K USD turnover. The busiest contract was KXATPSETWINNER-26SEP23DANMAT-2-DAN with $88.2K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP23DANMAT-2-DAN | 0.640 | 0.990 | 0.340 | 0.990 | 0.637 | Yes | 796 | $88.2K | 81 % | buy file → |
| KXATPSETWINNER-26SEP21BAEBRO-2-BAE | 0.450 | 0.640 | 0.010 | 0.010 | 0.419 | No | 1,215 | $49.7K | 89 % | buy file → |
| KXATPSETWINNER-26SEP21BAEBRO-1-BRO | 0.560 | 0.990 | 0.370 | 0.990 | 0.706 | Yes | 724 | $45.6K | 59 % | buy file → |
| KXATPSETWINNER-26SEP23TOMSUN-2-TOM | 0.640 | 0.800 | 0.010 | 0.010 | 0.502 | No | 848 | $41.6K | 70 % | buy file → |
| KXATPSETWINNER-26SEP23TOMSUN-2-SUN | 0.360 | 0.990 | 0.260 | 0.990 | 0.580 | Yes | 680 | $39.0K | 66 % | buy file → |
| KXATPSETWINNER-26SEP21VUKJAC-1-JAC | 0.620 | 0.990 | 0.090 | 0.990 | 0.666 | Yes | 388 | $30.6K | 57 % | buy file → |
| KXATPSETWINNER-26SEP23DANMAT-1-DAN | 0.620 | 0.990 | 0.580 | 0.990 | 0.880 | Yes | 227 | $30.3K | 67 % | buy file → |
| KXATPSETWINNER-26SEP23DANMAT-2-MAT | 0.370 | 0.740 | 0.010 | 0.010 | 0.329 | No | 649 | $27.7K | 75 % | buy file → |
| KXATPSETWINNER-26SEP21BAEBRO-2-BRO | 0.550 | 0.990 | 0.380 | 0.990 | 0.649 | Yes | 615 | $27.3K | 64 % | buy file → |
| KXATPSETWINNER-26SEP21VUKJAC-1-VUK | 0.490 | 0.910 | 0.010 | 0.010 | 0.517 | No | 393 | $24.1K | 81 % | buy file → |
2026-09-22 — 10 contracts, 2,886 trades, $261.6K turnover
The 10 most traded ATP Set Winner contracts on 2026-09-22 — 7 closed Yes (≥ 0.97), 3 closed No (≤ 0.03): 2,886 trades, $261.6K USD turnover. The busiest contract was KXATPSETWINNER-26SEP22BASHAN-2-BAS with $37.8K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP22BASHAN-2-BAS | 0.910 | 0.990 | 0.860 | 0.990 | 0.885 | Yes | 71 | $37.8K | 99 % | buy file → |
| KXATPSETWINNER-26SEP22YMEGAL-2-GAL | 0.640 | 0.990 | 0.190 | 0.990 | 0.592 | Yes | 325 | $34.7K | 77 % | buy file → |
| KXATPSETWINNER-26SEP22KANSAN-2-SAN | 0.900 | 0.990 | 0.900 | 0.990 | 0.951 | Yes | 268 | $30.1K | 99 % | buy file → |
| KXATPSETWINNER-26SEP22MULPAV-2-PAV | 0.430 | 0.990 | 0.260 | 0.990 | 0.579 | Yes | 278 | $27.3K | 83 % | buy file → |
| KXATPSETWINNER-26SEP22YMEGAL-1-GAL | 0.630 | 0.990 | 0.160 | 0.990 | 0.642 | Yes | 446 | $25.4K | 55 % | buy file → |
| KXATPSETWINNER-26SEP22MULPAV-2-MUL | 0.550 | 0.760 | 0.010 | 0.010 | 0.539 | No | 519 | $24.2K | 78 % | buy file → |
| KXATPSETWINNER-26SEP22BARILA-2-ILA | 0.650 | 0.950 | 0.010 | 0.010 | 0.496 | No | 456 | $23.1K | 89 % | buy file → |
| KXATPSETWINNER-26SEP22MOCXIA-1-MOC | 0.800 | 0.990 | 0.220 | 0.990 | 0.694 | Yes | 235 | $20.2K | 76 % | buy file → |
| KXATPSETWINNER-26SEP22KANSAN-1-SAN | 0.900 | 0.990 | 0.900 | 0.990 | 0.964 | Yes | 97 | $19.4K | 100 % | buy file → |
| KXATPSETWINNER-26SEP22WEBMAT-2-WEB | 0.350 | 0.920 | 0.010 | 0.010 | 0.605 | No | 191 | $19.3K | 90 % | buy file → |
2026-09-21 — 10 contracts, 79 trades, $12.4K turnover
The 10 most traded ATP Set Winner contracts on 2026-09-21 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 10 still open at the last print: 79 trades, $12.4K USD turnover. The busiest contract was KXATPSETWINNER-26SEP22UCHCIN-2-CIN with $3.8K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP22UCHCIN-2-CIN | 0.750 | 0.800 | 0.750 | 0.800 | 0.800 | open | 5 | $3.8K | 100 % | buy file → |
| KXATPSETWINNER-26SEP22BASHAN-2-BAS | 0.860 | 0.910 | 0.850 | 0.910 | 0.899 | open | 7 | $3.2K | 99 % | buy file → |
| KXATPSETWINNER-26SEP22KANSAN-1-SAN | 0.750 | 0.900 | 0.750 | 0.900 | 0.888 | open | 20 | $1.7K | 100 % | buy file → |
| KXATPSETWINNER-26SEP22KANSAN-2-SAN | 0.800 | 0.900 | 0.800 | 0.900 | 0.895 | open | 6 | $994.15 | 100 % | buy file → |
| KXATPSETWINNER-26SEP22SUNDEL-1-DEL | 0.380 | 0.400 | 0.380 | 0.380 | 0.387 | open | 12 | $782.72 | 100 % | buy file → |
| KXATPSETWINNER-26SEP22BASHAN-1-BAS | 0.870 | 0.900 | 0.860 | 0.890 | 0.892 | open | 11 | $688.38 | 81 % | buy file → |
| KXATPSETWINNER-26SEP22SUNDEL-1-SUN | 0.600 | 0.620 | 0.590 | 0.620 | 0.601 | open | 8 | $661 | 0 % | buy file → |
| KXATPSETWINNER-26SEP22DANDEL-1-DAN | 0.710 | 0.710 | 0.710 | 0.710 | 0.710 | open | 1 | $292.52 | 100 % | buy file → |
| KXATPSETWINNER-26SEP22UCHCIN-1-CIN | 0.800 | 0.810 | 0.800 | 0.810 | 0.808 | open | 4 | $195.59 | 100 % | buy file → |
| KXATPSETWINNER-26SEP21KOPJIA-2-KOP | 0.870 | 0.910 | 0.860 | 0.880 | 0.894 | open | 5 | $187.18 | 77 % | buy file → |
2026-09-13 — 8 contracts, 18,268 trades, $2.0M turnover
The 8 most traded ATP Set Winner contracts on 2026-09-13 — 4 closed Yes (≥ 0.97), 4 closed No (≤ 0.03): 18,268 trades, $2.0M USD turnover. The busiest contract was KXATPSETWINNER-26SEP13ZVESHE-2-ZVE with $827.3K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSETWINNER-26SEP13ZVESHE-2-ZVE | 0.540 | 0.990 | 0.480 | 0.990 | 0.791 | Yes | 3,529 | $827.3K | 46 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-3-SHE | 0.700 | 0.990 | 0.340 | 0.990 | 0.550 | Yes | 4,420 | $376.1K | 68 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-1-ZVE | 0.550 | 0.990 | 0.550 | 0.990 | 0.775 | Yes | 1,874 | $304.2K | 85 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-3-ZVE | 0.550 | 0.660 | 0.010 | 0.010 | 0.526 | No | 2,684 | $261.4K | 68 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-2-SHE | 0.490 | 0.520 | 0.010 | 0.010 | 0.330 | No | 2,734 | $113.8K | 89 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-4-ZVE | 0.820 | 0.990 | 0.750 | 0.990 | 0.886 | Yes | 503 | $103.0K | 71 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-1-SHE | 0.460 | 0.490 | 0.010 | 0.010 | 0.199 | No | 1,876 | $46.5K | 90 % | buy file → |
| KXATPSETWINNER-26SEP13ZVESHE-4-SHE | 0.200 | 0.290 | 0.010 | 0.010 | 0.141 | No | 648 | $15.4K | 93 % | buy file → |
How a ATP Set Winner contract trades
On Kalshi, a ATP Set Winner contract trades for about 33 h from open to close, is listed roughly 10 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 10 contracts captured on 2026-09-26.
Why buy Kalshi ATP Set Winner data here
Four things every page on this site is built on — and the reason the numbers above exist at all.
We record everything
The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.
Institutional grade
Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.
€1 per instrument-day
Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and every venue has free full-day samples to test against first.
Self-service for everyone
Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.
Kalshi ATP Set Winner data — FAQ
What Kalshi ATP Set Winner data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the ATP Set Winner series on Kalshi (64 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for ATP Set Winner?
KXATPSETWINNER — every contract of the series carries this prefix in its ticker (followed by the event date and strike). Files in a day bundle are named by the full contract ticker, so a bundle holds every KXATPSETWINNER-* contract listed that UTC day.
How far back does the ATP Set Winner data go?
Coverage runs March 2026 – present — 200 trading days in total.
What format are the Kalshi files in?
One zstd-compressed text file per contract per UTC day, in the same normalized schema as our crypto venues — see the market-data specification; free samples on the downloads page.
Can I get Kalshi ATP Set Winner data as CSV or Parquet?
Yes — trades export as gzipped CSV or Parquet at no extra cost, with integer microsecond UTC timestamps that load straight into pandas, polars or DuckDB. Kalshi records full order-book depth without a separate BBO stream, so book data ships in the native tick file — the free reader script converts it locally. See the formats overview.
How much does Kalshi ATP Set Winner historical data cost?
€1 per series-day bundle — every contract of the series for that day — no subscription, no minimum order; buy as a guest in the Data Shop and download immediately. Credit packs lower the effective price and never expire.
Do I need an account or a sales call?
No. Pick the ATP Set Winner series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.
How is the Kalshi ATP Set Winner data captured?
Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.
How many ATP Set Winner contracts trade per day on Kalshi?
On average 79 ATP Set Winner contracts had at least one trade per UTC day over the last 23 captured days on Kalshi, with about 6.8M order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi ATP Set Winner contracts?
Over the last 23 captured days, the turnover-weighted quoted bid-ask spread was 4.77 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $12.1K per side, 68 % of USD turnover was taker-buy. These figures are computed from the recorded Level-2 order books and trade prints — the same data in the day bundles.
What was the most traded ATP Set Winner contract on 2026-09-26?
KXATPSETWINNER-26SEP24HALSAF-1-HAL — $63.9K USD turnover over 615 trades on Kalshi. The 10 most traded contracts of the series did 6,118 trades and $453.7K that UTC day. Open, high, low, close and VWAP per contract are listed on this page; the tick-level data is in the day bundle.
What was the busiest ATP Set Winner trading day on Kalshi?
2026-09-03, with $7.0M of USD turnover over 70,006 trades across every ATP Set Winner contract of the day; the busiest full month was Aug 2026 at $63.9M. Since our statistics began on 2026-07-08 the series has recorded 1,645,600 trades and $140.3M over 74 captured days; the single biggest contract was KXATPSETWINNER-26SEP13ZVESHE-2-ZVE on 2026-09-13 with $827.3K. Any of these days is a downloadable bundle.