Kalshi KXATPSSPREAD — ATP Set Spread Data
Every Kalshi “ATP Set Spread” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 14 trading days as day bundles, €1 per day, bought as a guest with instant download.
ATP Set Spread on Kalshi — activity
Per-day trade and turnover statistics exist from July 2026 onward — a limit of the statistics, not of the capture: older days are archived in full (every contract, every message) without a statistics row.
One purchase, the whole series for a day
A series-day bundle contains every ATP Set Spread contract that was listed on Kalshi on that UTC day — traded or not — 2 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 August 2026 – September 2026 — 14 trading days, 361 MB compressed in total. A day typically holds 39 contract files (up to 108 on the busiest day, 50.2 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 Spread — development since capture
25,385 trades and $923.5K of USD turnover over 14 captured days since 2026-08-31 — record day 2026-09-09 with $169.3K, biggest single contract KXATPSSPREAD-26SEP08SHEALC-ALC2 (SHE vs ALC · 2026-09-08 · spread · ALC 2) (2026-09-09, $110.2K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Sep 2026 | 13 | 25,292 | $918.4K | $70.6K | 299 | 14.6M | +17650.9 % |
| Aug 2026 | 1 | 93 | $5.2K | $5.2K | 17 | 63.5K | — |
Kalshi ATP Set Spread — 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 markets on other prediction venues
Polymarket, predict.fun also list ATP event markets — the same 30-day statistics side by side, each a day bundle of its own.
| Venue · series | Trades (30d) | Turnover (30d) | Avg spread | Top-1 depth | L2 updates / trade | Days archived | Price / day |
|---|---|---|---|---|---|---|---|
| Kalshi · ATP Set Spread (this page) | — | — | — | — | — | 14 | €1 |
| Polymarket · ATP Tennis (matches & props) | 777,432 | $139.3M | 2.84 ¢ | $12.5K | 651.1 | 406 | €1 |
| predict.fun · ATP Tennis (matches & props) | 17,051 | $2.1M | 2.33 ¢ | $2.1K | 333.9 | 20 | €1 |
30-day window of the statistics table, per venue's own series; spread in contract-price cents and best-bid/ask depth are turnover-weighted, L2 updates per trade = recorded order-book level updates ÷ trades. "—" = no statistics row in the window. Each venue settles its own contracts on its own rules — the series are comparable in subject, not interchangeable.
ATP Set Spread — activity by weekday and hour
Contracts listed to settle 22:00–22:59 UTC take 24 % of the turnover of the most traded contracts.
| Settles (UTC) | Turnover | USD | Share | Trades | Contracts |
|---|---|---|---|---|---|
| 00:00–00:59 | $31.0K | 3.5 % | 579 | 7 | |
| 01:00–01:59 | $55.6K | 6.3 % | 1,184 | 13 | |
| 02:00–02:59 | $43.0K | 4.9 % | 995 | 16 | |
| 03:00–03:59 | $92.7K | 10.5 % | 3,134 | 11 | |
| 05:00–05:59 | $15.0K | 1.7 % | 326 | 5 | |
| 06:00–06:59 | $49.3K | 5.6 % | 2,316 | 5 | |
| 07:00–07:59 | $203.1K | 23.1 % | 4,886 | 5 | |
| 17:00–17:59 | $30.5K | 3.5 % | 220 | 1 | |
| 18:00–18:59 | $16.5K | 1.9 % | 324 | 3 | |
| 19:00–19:59 | $18.2K | 2.1 % | 1,071 | 5 | |
| 20:00–20:59 | $52.9K | 6.0 % | 1,192 | 7 | |
| 21:00–21:59 | $25.2K | 2.9 % | 1,019 | 11 | |
| 22:00–22:59 | $215.0K | 24.4 % | 3,616 | 18 | |
| 23:00–23:59 | $32.5K | 3.7 % | 1,372 | 7 |
Kalshi ATP Set Spread — USD turnover and trades of the most traded contracts per day, grouped by the UTC hour in which the contract is listed to settle (the venue's close time), over the newest 30 captured days; from our tick archive.
ATP Set Spread — last 14 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-13 | 2 | 6.31 MB | 2 | 1,202 | $50.3K | 67 % | 1.64 ¢ | $10.1K | 247.4K | Buy day → | |
| 2026-09-12 | 4 | 13.1 MB | 4 | 2,046 | $35.0K | 66 % | 3.70 ¢ | $3.5K | 385.5K | Buy day → | |
| 2026-09-11 | 4 | 15.2 MB | 4 | 1,505 | $152.1K | 84 % | 1.67 ¢ | $5.0K | 456.4K | Buy day → | |
| 2026-09-10 | 6 | 14.1 MB | 6 | 211 | $4.4K | 74 % | 21.5 ¢ | $19.8K | 562.7K | Buy day → | |
| 2026-09-09 | 8 | 37.0 MB | 8 | 5,367 | $169.3K | 67 % | 3.57 ¢ | $8.4K | 1.5M | Buy day → | |
| 2026-09-08 | 14 | 26.9 MB | 14 | 1,983 | $113.1K | 88 % | 2.19 ¢ | $1.9K | 1.1M | Buy day → | |
| 2026-09-07 | 14 | 32.8 MB | 13 | 1,271 | $47.4K | 86 % | 4.69 ¢ | $1.6K | 1.4M | Buy day → | |
| 2026-09-06 | 26 | 41.7 MB | 19 | 1,520 | $68.1K | 74 % | 4.49 ¢ | $791.58 | 1.8M | Buy day → | |
| 2026-09-05 | 36 | 40.6 MB | 27 | 1,705 | $44.4K | 81 % | 6.97 ¢ | $3.0K | 1.7M | Buy day → | |
| 2026-09-04 | 46 | 32.3 MB | 34 | 2,262 | $62.1K | 72 % | 6.58 ¢ | $1.0K | 1.3M | Buy day → | |
| 2026-09-03 | 74 | 31.4 MB | 53 | 2,168 | $51.2K | 81 % | 12.9 ¢ | $1.4K | 1.3M | Buy day → | |
| 2026-09-02 | 94 | 50.2 MB | 63 | 2,436 | $80.3K | 83 % | 13.5 ¢ | $514.01 | 2.1M | Buy day → | |
| 2026-09-01 | 108 | 17.8 MB | 52 | 1,616 | $40.8K | 80 % | 18.3 ¢ | $3.7K | 719.8K | Buy day → | |
| 2026-08-31 | 108 | 1.58 MB | 17 | 93 | $5.2K | 97 % | 38.4 ¢ | $1.2K | 63.5K | 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 Spread 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 2 most traded ATP Set Spread contracts on 2026-09-13 — 1 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 1,202 trades, $50.3K USD turnover. The busiest contract was KXATPSSPREAD-26SEP13ZVESHE-ZVE2 with $47.8K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP13ZVESHE-ZVE2 ZVE vs SHE · 2026-09-13 · spread · ZVE 2 | 2026-09-13 22:05 | 0.470 | 0.990 | 0.090 | 0.990 | 0.531 | Yes | 1,071 | $47.8K | 68 % | 1.64 ¢ | $10.5K | 167.2K | buy file → |
| KXATPSSPREAD-26SEP13ZVESHE-SHE2 ZVE vs SHE · 2026-09-13 · spread · SHE 2 | 2026-09-13 22:05 | 0.290 | 0.300 | 0.010 | 0.010 | 0.106 | No | 131 | $2.5K | 47 % | 1.72 ¢ | $3.0K | 80.3K | 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; spread = the contract's turnover-weighted quoted bid-ask spread in cents, top-1 depth = mean best-bid/ask notional per side, L2 updates = order-book level updates recorded for the contract that day. “Settles” is the venue-listed close time of the contract where the venue publishes one (UTC).
2026-09-12 — 4 contracts, 2,046 trades, $35.0K turnover
The 4 most traded ATP Set Spread contracts on 2026-09-12 — 1 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 2 still open at the last print: 2,046 trades, $35.0K USD turnover. The busiest contract was KXATPSSPREAD-26SEP11TIASHE-SHE2 with $32.8K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP11TIASHE-SHE2 TIA vs SHE · 2026-09-11 · spread · SHE 2 | 2026-09-12 03:06 | 0.580 | 0.990 | 0.040 | 0.990 | 0.521 | Yes | 1,800 | $32.8K | 67 % | 3.78 ¢ | $3.7K | 108.8K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-TIA2 TIA vs SHE · 2026-09-11 · spread · TIA 2 | 2026-09-12 03:06 | 0.160 | 0.600 | 0.010 | 0.010 | 0.234 | No | 153 | $1.4K | 42 % | 2.43 ¢ | $95.06 | 43.4K | buy file → |
| KXATPSSPREAD-26SEP13ZVESHE-SHE2 ZVE vs SHE · 2026-09-13 · spread · SHE 2 | 2026-09-13 22:05 | 0.290 | 0.320 | 0.290 | 0.290 | 0.307 | open | 52 | $435.65 | 77 % | 2.74 ¢ | $458.44 | 217.8K | buy file → |
| KXATPSSPREAD-26SEP13ZVESHE-ZVE2 ZVE vs SHE · 2026-09-13 · spread · ZVE 2 | 2026-09-13 22:05 | 0.390 | 0.570 | 0.360 | 0.470 | 0.435 | open | 41 | $342.97 | 68 % | 2.13 ¢ | $37.56 | 15.4K | buy file → |
2026-09-11 — 4 contracts, 1,505 trades, $152.1K turnover
The 4 most traded ATP Set Spread contracts on 2026-09-11 — 1 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 2 still open at the last print: 1,505 trades, $152.1K USD turnover. The busiest contract was KXATPSSPREAD-26SEP11ZVEKHA-ZVE2 with $107.3K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP11ZVEKHA-ZVE2 ZVE vs KHA · 2026-09-11 · spread · ZVE 2 | 2026-09-11 22:25 | 0.620 | 0.990 | 0.520 | 0.990 | 0.692 | Yes | 767 | $107.3K | 90 % | 1.89 ¢ | $3.8K | 165.2K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-SHE2 TIA vs SHE · 2026-09-11 · spread · SHE 2 | 2026-09-12 03:06 | 0.580 | 0.620 | 0.430 | 0.580 | 0.557 | open | 602 | $43.9K | 69 % | 1.13 ¢ | $8.0K | 129.3K | buy file → |
| KXATPSSPREAD-26SEP11ZVEKHA-KHA2 ZVE vs KHA · 2026-09-11 · spread · KHA 2 | 2026-09-11 22:25 | 0.130 | 0.140 | 0.010 | 0.010 | 0.026 | No | 76 | $569.1 | 26 % | 2.59 ¢ | $97.43 | 104.7K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-TIA2 TIA vs SHE · 2026-09-11 · spread · TIA 2 | 2026-09-12 03:06 | 0.180 | 0.190 | 0.120 | 0.160 | 0.150 | open | 60 | $300.82 | 24 % | 1.17 ¢ | $187.18 | 57.3K | buy file → |
2026-09-10 — 6 contracts, 211 trades, $4.4K turnover
The 6 most traded ATP Set Spread contracts on 2026-09-10 — 1 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 5 still open at the last print: 211 trades, $4.4K USD turnover. The busiest contract was KXATPSSPREAD-26SEP09ZVEVAN-ZVE2 with $3.4K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP09ZVEVAN-ZVE2 ZVE vs VAN · 2026-09-09 · spread · ZVE 2 | 2026-09-10 02:30 | 0.790 | 0.990 | 0.280 | 0.990 | 0.911 | Yes | 155 | $3.4K | 70 % | 26.0 ¢ | $24.7K | 37.4K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-SHE2 TIA vs SHE · 2026-09-11 · spread · SHE 2 | 2026-09-12 03:06 | 0.550 | 0.600 | 0.550 | 0.580 | 0.580 | open | 18 | $591.23 | 98 % | 1.15 ¢ | $2.5K | 48.2K | buy file → |
| KXATPSSPREAD-26SEP11ZVEKHA-ZVE2 ZVE vs KHA · 2026-09-11 · spread · ZVE 2 | 2026-09-11 22:25 | 0.670 | 0.720 | 0.620 | 0.620 | 0.650 | open | 14 | $140.88 | 41 % | 10.00 ¢ | $190.29 | 47.8K | buy file → |
| KXATPSSPREAD-26SEP09ZVEVAN-VAN2 ZVE vs VAN · 2026-09-09 · spread · VAN 2 | 2026-09-10 02:30 | 0.030 | 0.750 | 0.030 | 0.050 | 0.437 | open | 14 | $130.98 | 99 % | 19.7 ¢ | $101.39 | 674 | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-TIA2 TIA vs SHE · 2026-09-11 · spread · TIA 2 | 2026-09-12 03:06 | 0.250 | 0.250 | 0.180 | 0.180 | 0.190 | open | 3 | $43.85 | 98 % | 1.00 ¢ | $112.19 | 71.4K | buy file → |
| KXATPSSPREAD-26SEP11ZVEKHA-KHA2 ZVE vs KHA · 2026-09-11 · spread · KHA 2 | 2026-09-11 22:25 | 0.250 | 0.250 | 0.120 | 0.130 | 0.137 | open | 7 | $32.74 | 58 % | 8.16 ¢ | $34.05 | 357.3K | buy file → |
2026-09-09 — 8 contracts, 5,367 trades, $169.3K turnover
The 8 most traded ATP Set Spread contracts on 2026-09-09 — 0 closed Yes (≥ 0.97), 4 closed No (≤ 0.03), 4 still open at the last print: 5,367 trades, $169.3K USD turnover. The busiest contract was KXATPSSPREAD-26SEP08SHEALC-ALC2 with $110.2K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP08SHEALC-ALC2 SHE vs ALC · 2026-09-08 · spread · ALC 2 | 2026-09-09 07:45 | 0.620 | 0.920 | 0.010 | 0.010 | 0.471 | No | 3,375 | $110.2K | 68 % | 3.56 ¢ | $12.4K | 440.4K | buy file → |
| KXATPSSPREAD-26SEP09KHABLO-KHA2 KHA vs BLO · 2026-09-09 · spread · KHA 2 | 2026-09-09 22:50 | 0.460 | 0.990 | 0.230 | 0.920 | 0.603 | open | 763 | $33.7K | 49 % | 2.05 ¢ | $920.87 | 431.0K | buy file → |
| KXATPSSPREAD-26SEP09ZVEVAN-ZVE2 ZVE vs VAN · 2026-09-09 · spread · ZVE 2 | 2026-09-10 02:30 | 0.880 | 0.880 | 0.740 | 0.790 | 0.770 | open | 58 | $14.8K | 98 % | 6.33 ¢ | $1.5K | 2.6K | buy file → |
| KXATPSSPREAD-26SEP08SHEALC-SHE2 SHE vs ALC · 2026-09-08 · spread · SHE 2 | 2026-09-09 07:45 | 0.140 | 0.980 | 0.010 | 0.010 | 0.160 | No | 1,078 | $9.4K | 78 % | 4.70 ¢ | $287.73 | 474.1K | buy file → |
| KXATPSSPREAD-26SEP09KHABLO-BLO2 KHA vs BLO · 2026-09-09 · spread · BLO 2 | 2026-09-09 22:50 | 0.210 | 0.480 | 0.010 | 0.010 | 0.222 | No | 58 | $804.59 | 65 % | 2.69 ¢ | $138.65 | 38.2K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-SHE2 TIA vs SHE · 2026-09-11 · spread · SHE 2 | 2026-09-12 03:06 | 0.530 | 0.570 | 0.510 | 0.550 | 0.548 | open | 12 | $344.61 | 6 % | 6.01 ¢ | $220.65 | 6.9K | buy file → |
| KXATPSSPREAD-26SEP09ZVEVAN-VAN2 ZVE vs VAN · 2026-09-09 · spread · VAN 2 | 2026-09-10 02:30 | 0.110 | 0.260 | 0.030 | 0.030 | 0.093 | No | 22 | $66.23 | 87 % | 10.9 ¢ | $20.28 | 7.9K | buy file → |
| KXATPSSPREAD-26SEP11TIASHE-TIA2 TIA vs SHE · 2026-09-11 · spread · TIA 2 | 2026-09-12 03:06 | 0.250 | 0.250 | 0.250 | 0.250 | 0.250 | open | 1 | $1 | 0 % | 3.67 ¢ | $14.61 | 134.9K | buy file → |
2026-09-08 — 10 contracts, 1,956 trades, $113.0K turnover
The 10 most traded ATP Set Spread contracts on 2026-09-08 — 1 closed Yes (≥ 0.97), 5 closed No (≤ 0.03), 4 still open at the last print: 1,956 trades, $113.0K USD turnover. The busiest contract was KXATPSSPREAD-26SEP08SHEALC-ALC2 with $80.5K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP08SHEALC-ALC2 SHE vs ALC · 2026-09-08 · spread · ALC 2 | 2026-09-09 07:45 | 0.640 | 0.660 | 0.600 | 0.620 | 0.635 | open | 329 | $80.5K | 93 % | 1.43 ¢ | $2.4K | 6.2K | buy file → |
| KXATPSSPREAD-26SEP08TIAMIC-TIA2 TIA vs MIC · 2026-09-08 · spread · TIA 2 | 2026-09-08 23:15 | 0.430 | 0.740 | 0.010 | 0.010 | 0.178 | No | 542 | $20.5K | 86 % | 3.27 ¢ | $578.8 | 385.0K | buy file → |
| KXATPSSPREAD-26SEP08TIAMIC-MIC2 TIA vs MIC · 2026-09-08 · spread · MIC 2 | 2026-09-08 23:15 | 0.280 | 0.990 | 0.010 | 0.010 | 0.251 | No | 691 | $7.9K | 47 % | 3.73 ¢ | $484.05 | 398.3K | buy file → |
| KXATPSSPREAD-26SEP07ZVEDAR-ZVE2 ZVE vs DAR · 2026-09-07 · spread · ZVE 2 | 2026-09-08 03:55 | 0.790 | 0.990 | 0.190 | 0.990 | 0.900 | Yes | 93 | $2.2K | 73 % | 7.75 ¢ | $2.7K | 11.7K | buy file → |
| KXATPSSPREAD-26SEP07KHATIE-TIE2 KHA vs TIE · 2026-09-07 · spread · TIE 2 | 2026-09-08 01:50 | 0.350 | 0.850 | 0.010 | 0.010 | 0.301 | No | 146 | $719.93 | 74 % | 12.4 ¢ | $107.56 | 37.8K | buy file → |
| KXATPSSPREAD-26SEP08SHEALC-SHE2 SHE vs ALC · 2026-09-08 · spread · SHE 2 | 2026-09-09 07:45 | 0.170 | 0.170 | 0.110 | 0.140 | 0.131 | open | 30 | $432.89 | 50 % | 1.24 ¢ | $43.22 | 7.8K | buy file → |
| KXATPSSPREAD-26SEP07GEAVAN-GEA2 GEA vs VAN · 2026-09-07 · spread · GEA 2 | 2026-09-08 02:10 | 0.240 | 0.590 | 0.010 | 0.010 | 0.110 | No | 87 | $423.41 | 28 % | 16.7 ¢ | $83.43 | 1.6K | buy file → |
| KXATPSSPREAD-26SEP09KHABLO-KHA2 KHA vs BLO · 2026-09-09 · spread · KHA 2 | 2026-09-09 22:50 | 0.450 | 0.460 | 0.420 | 0.460 | 0.434 | open | 11 | $160.15 | 36 % | 4.61 ¢ | $357.3 | 103.0K | buy file → |
| KXATPSSPREAD-26SEP09ZVEVAN-ZVE2 ZVE vs VAN · 2026-09-09 · spread · ZVE 2 | 2026-09-10 02:30 | 0.730 | 0.880 | 0.730 | 0.880 | 0.789 | open | 10 | $78.81 | 100 % | 8.97 ¢ | $44.91 | 25.6K | buy file → |
| KXATPSSPREAD-26SEP07KHATIE-KHA2 KHA vs TIE · 2026-09-07 · spread · KHA 2 | 2026-09-08 01:50 | 0.130 | 0.150 | 0.010 | 0.010 | 0.010 | No | 17 | $57.24 | 97 % | 11.8 ¢ | $153.6 | 2.8K | buy file → |
2026-09-07 — 10 contracts, 1,244 trades, $47.2K turnover
The 10 most traded ATP Set Spread contracts on 2026-09-07 — 1 closed Yes (≥ 0.97), 2 closed No (≤ 0.03), 7 still open at the last print: 1,244 trades, $47.2K USD turnover. The busiest contract was KXATPSSPREAD-26SEP07KHATIE-TIE2 with $21.6K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXATPSSPREAD-26SEP07KHATIE-TIE2 KHA vs TIE · 2026-09-07 · spread · TIE 2 | 2026-09-08 01:50 | 0.520 | 0.820 | 0.180 | 0.350 | 0.475 | open | 378 | $21.6K | 94 % | 2.39 ¢ | $1.1K | 202.1K | buy file → |
| KXATPSSPREAD-26SEP06CERBLO-BLO2 CER vs BLO · 2026-09-06 · spread · BLO 2 | 2026-09-07 21:35 | 0.410 | 0.990 | 0.070 | 0.990 | 0.502 | Yes | 288 | $11.6K | 74 % | 5.61 ¢ | $2.9K | 150.4K | buy file → |
| KXATPSSPREAD-26SEP07GEAVAN-VAN2 GEA vs VAN · 2026-09-07 · spread · VAN 2 | 2026-09-08 02:10 | 0.500 | 0.750 | 0.010 | 0.010 | 0.420 | No | 176 | $4.8K | 92 % | 7.90 ¢ | $477.57 | 66.4K | buy file → |
| KXATPSSPREAD-26SEP08SHEALC-ALC2 SHE vs ALC · 2026-09-08 · spread · ALC 2 | 2026-09-09 07:45 | 0.650 | 0.690 | 0.290 | 0.640 | 0.642 | open | 74 | $2.6K | 94 % | 5.97 ¢ | $66.55 | 45.8K | buy file → |
| KXATPSSPREAD-26SEP07ZVEDAR-ZVE2 ZVE vs DAR · 2026-09-07 · spread · ZVE 2 | 2026-09-08 03:55 | 0.750 | 0.790 | 0.750 | 0.790 | 0.779 | open | 18 | $2.4K | 88 % | 1.56 ¢ | $3.0K | 102.0K | buy file → |
| KXATPSSPREAD-26SEP06CERBLO-CER2 CER vs BLO · 2026-09-06 · spread · CER 2 | 2026-09-07 21:35 | 0.330 | 0.840 | 0.010 | 0.010 | 0.367 | No | 151 | $1.7K | 46 % | 9.00 ¢ | $199.22 | 326.5K | buy file → |
| KXATPSSPREAD-26SEP06SHETSI-SHE2 SHE vs TSI · 2026-09-06 · spread · SHE 2 | 2026-09-07 01:16 | 0.820 | 0.990 | 0.620 | 0.940 | 0.927 | open | 54 | $1.5K | 85 % | 8.02 ¢ | $4.7K | 46.3K | buy file → |
| KXATPSSPREAD-26SEP07GEAVAN-GEA2 GEA vs VAN · 2026-09-07 · spread · GEA 2 | 2026-09-08 02:10 | 0.260 | 0.990 | 0.180 | 0.240 | 0.361 | open | 58 | $707.4 | 85 % | 27.2 ¢ | $227.29 | 17.0K | buy file → |
| KXATPSSPREAD-26SEP08TIAMIC-TIA2 TIA vs MIC · 2026-09-08 · spread · TIA 2 | 2026-09-08 23:15 | 0.460 | 0.460 | 0.350 | 0.430 | 0.403 | open | 13 | $185.93 | 62 % | 3.35 ¢ | $200.65 | 166.6K | buy file → |
| KXATPSSPREAD-26SEP07KHATIE-KHA2 KHA vs TIE · 2026-09-07 · spread · KHA 2 | 2026-09-08 01:50 | 0.250 | 0.500 | 0.010 | 0.130 | 0.174 | open | 34 | $179.82 | 33 % | 3.65 ¢ | $115.28 | 166.4K | buy file → |
ATP on Kalshi — market types across the series
Across 17 ATP series on Kalshi, 67,119 contracts have been listed as of 2026-11-03: moneyline / winner 48,218 · total / over-under 7,252 · spread / handicap 7,188 · other 4,461. Counted from every contract file of the family, not from the traded top-10.
| Market type | Contracts listed (all time) | Listed last 30 days | Share |
|---|---|---|---|
| moneyline / winner | 48,218 | 6,266 | 72 % |
| total / over-under | 7,252 | 1,023 | 11 % |
| spread / handicap | 7,188 | 1,029 | 11 % |
| other | 4,461 | 1,152 | 7 % |
| Total | 67,119 | 9,470 | 100 % |
Kalshi ATP series— market type read from each contract's venue identifier (ticker suffix on Kalshi, slug suffix on Polymarket, market description on predict.fun and OG.com), counted over every contract listed in the family as of 2026-11-03; “listed last 30 days” counts contracts whose venue settlement time falls in that window. Every one of them is in the day bundle of its day.
How a ATP Set Spread contract trades
On Kalshi, a ATP Set Spread contract trades for about 42 h from open to close, is listed roughly 11 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 2 contracts captured on 2026-09-13.
Build a ATP Set Spread model on this data
Every settled ATP Set Spread contract is a labelled example: the winner, the line or the total that cleared is the label, and the day bundle holds each contract's full order-book path and trade tape, nanosecond-stamped, from the first quote days before the event to the last print — the features for that label. The statistics on this page cover the most traded contracts per day; the bundle holds every contract listed on Kalshi that day.
Split by season and match day, never at random — the contracts of one slate share injuries, weather and the same public money, and a random split leaks the slate's results into training; walk forward over game days and purge the days whose contracts were still open. The sports-model guide works the closing-line benchmark, the pre-game line path and that split through.
Purchased data is for your own use — backtesting, research, analytics and training your own models, in-house or in your own products; the trained models and derived data you build from it are yours. The raw files and tick streams themselves may not be redistributed, resold or published. The full terms are on the data license page.
Why buy Kalshi ATP Set Spread 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.
Agents: /llms.txt · MCP server /mcp · every page as markdown via Accept: text/markdown
Kalshi ATP Set Spread data — FAQ
What Kalshi ATP Set Spread data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the ATP Set Spread series on Kalshi (2 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for ATP Set Spread?
KXATPSSPREAD — 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 KXATPSSPREAD-* contract listed that UTC day.
How far back does the ATP Set Spread data go?
Coverage runs August 2026 – September 2026 — 14 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 Spread 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 Spread 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 Spread 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 Spread 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.
What was the most traded ATP Set Spread contract on 2026-09-13?
KXATPSSPREAD-26SEP13ZVESHE-ZVE2 (ZVE vs SHE · 2026-09-13 · spread · ZVE 2) — $47.8K USD turnover over 1,071 trades on Kalshi. The 2 most traded contracts of the series did 1,202 trades and $50.3K 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 Spread trading day on Kalshi?
2026-09-09, with $169.3K of USD turnover over 5,367 trades across every ATP Set Spread contract of the day; the busiest full month was Sep 2026 at $918.4K. Since our statistics began on 2026-08-31 the series has recorded 25,385 trades and $923.5K over 14 captured days; the single biggest contract was KXATPSSPREAD-26SEP08SHEALC-ALC2 (SHE vs ALC · 2026-09-08 · spread · ALC 2) on 2026-09-09 with $110.2K. Any of these days is a downloadable bundle.
When do ATP Set Spread contracts settle?
Contracts listed to settle between 22:00 and 22:59 UTC carried 24 % of the USD turnover of the most traded ATP Set Spread contracts per day over the newest 30 captured days on Kalshi. The hour-by-hour profile on this page shows the whole day; every contract file carries nanosecond exchange timestamps, so any finer profile can be computed from the bundle.
Which market types does Kalshi list for ATP?
Kalshi lists each market type as its own series — 17 ATP series with 67,119 contracts listed as of 2026-11-03: moneyline / winner 48,218 · total / over-under 7,252 · spread / handicap 7,188 · other 4,461. ATP Set Spread is one of them; a series-day bundle covers one series, so buy the same day across the sibling series you need in the shop.
How much of ATP Set Spread turnover trades on game day?
77 % — across 72 settled ATP Set Spread contracts between 2026-08-31 and 2026-09-13 on Kalshi, 77 % of their USD turnover printed on the UTC day the contract settled and 23 % on the days before, summed from every trade of the most traded contracts per day. The pre-event share is where line-movement features live; the day bundles hold both.
How long before an event do ATP Set Spread contracts trade?
A median of 1 captured trading day per contract, settlement day included (a quarter traded 2 days or more) — across 72 settled ATP Set Spread contracts to 2026-09-13 on Kalshi, counting the UTC days a contract ranked among the series' most traded. Buy those days as a range (/shop/bundles?bundle=kalshi-kxatpsspread&d=<from>..<to>) to get the whole pre-event path of each contract.