Kalshi KXSERIEA — Serie A Historical Data
Every Kalshi “Serie A ” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 132 trading days as day bundles, €1 per day, bought as a guest with instant download.
Serie A on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 30 captured days to 2026-09-22, 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 Serie A contract that was listed on Kalshi on that UTC day — traded or not — 20 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 — 132 trading days, 35.4 MB compressed in total. A day typically holds 20 contract files (up to 20 on the busiest day, 1017 KB). Pick individual days in the shop calendar for €1 each; delivery is an instant per-file download or one archive for the whole day.
Serie A — development since capture
1,426 trades and $33.1K of USD turnover over 45 captured days since 2026-08-09 — record day 2026-09-05 with $4.3K, biggest single contract KXSERIEA-27-INT (2026-09-05, $3.6K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Sep 2026 (month to date) | 22 | 946 | $15.4K | $699.63 | 118 | 187.0K | — |
| Aug 2026 | 23 | 480 | $17.7K | $768.89 | 122 | 208.6K | — |
Kalshi Serie A — 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.
Serie A — activity by weekday
Saturdays carry the most turnover, about $1.4K per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $648.35 | 58 | 5 | |
| Tuesday | $1.1K | 51 | 5 | |
| Wednesday | $491.25 | 23.75 | 4 | |
| Thursday | $741.68 | 26.75 | 4 | |
| Friday | $145.68 | 20.25 | 4 | |
| Saturday | $1.4K | 41.5 | 4 | |
| Sunday | $475.72 | 51 | 4 |
Kalshi Serie A — 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 —.
Serie A — 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-22 | 20 | 944 KB | 6 | 32 | $114.47 | 63 % | 1.48 ¢ | $51.1 | 28.9K | Buy day → | |
| 2026-09-21 | 20 | 791 KB | 6 | 39 | $257.74 | 38 % | 2.04 ¢ | $40.68 | 24.4K | Buy day → | |
| 2026-09-20 | 20 | 333 KB | 6 | 86 | $721.82 | 85 % | 4.69 ¢ | $2.2K | 8.1K | Buy day → | |
| 2026-09-19 | 20 | 780 KB | 6 | 72 | $940.95 | 70 % | 2.41 ¢ | $130.68 | 25.1K | Buy day → | |
| 2026-09-18 | 20 | 273 KB | 6 | 21 | $29.42 | 100 % | 1.36 ¢ | $30.39 | 4.9K | Buy day → | |
| 2026-09-17 | 20 | 347 KB | 5 | 53 | $247.66 | 68 % | 2.71 ¢ | $127.74 | 7.5K | Buy day → | |
| 2026-09-16 | 20 | 216 KB | 4 | 32 | $63.78 | 73 % | 2.10 ¢ | $48.65 | 4.7K | Buy day → | |
| 2026-09-15 | 20 | 440 KB | 6 | 71 | $471.16 | 85 % | 3.47 ¢ | $163.21 | 13.1K | Buy day → | |
| 2026-09-14 | 20 | 207 KB | 5 | 84 | $975.98 | 83 % | 2.26 ¢ | $73.37 | 4.8K | Buy day → | |
| 2026-09-13 | 20 | 174 KB | 6 | 35 | $118.9 | 65 % | 1.76 ¢ | $92.62 | 3.9K | Buy day → | |
| 2026-09-12 | 20 | 247 KB | 5 | 26 | $276.31 | 72 % | 4.60 ¢ | $120.1 | 3.7K | Buy day → | |
| 2026-09-11 | 20 | 159 KB | 6 | 29 | $71.2 | 76 % | 3.90 ¢ | $163.02 | 2.3K | Buy day → | |
| 2026-09-10 | 20 | 107 KB | 2 | 29 | $270.61 | 98 % | 2.22 ¢ | $31.42 | 1.6K | Buy day → | |
| 2026-09-09 | 20 | 682 KB | 4 | 18 | $54.35 | 81 % | 3.07 ¢ | $94.65 | 20.9K | Buy day → | |
| 2026-09-08 | 20 | 428 KB | 5 | 31 | $363.68 | 94 % | 4.09 ¢ | $162.96 | 13.4K | Buy day → | |
| 2026-09-07 | 20 | 179 KB | 7 | 35 | $318.39 | 98 % | 1.51 ¢ | $270.69 | 3.7K | Buy day → | |
| 2026-09-06 | 20 | 184 KB | 7 | 46 | $423.7 | 98 % | 2.19 ¢ | $349.2 | 3.7K | Buy day → | |
| 2026-09-05 | 20 | 119 KB | 6 | 48 | $4.3K | 97 % | 1.50 ¢ | $1.4K | 2.1K | Buy day → | |
| 2026-09-04 | 20 | 75.4 KB | 4 | 12 | $153.56 | 100 % | 1.96 ¢ | $289.52 | 1.1K | Buy day → | |
| 2026-09-03 | 20 | 100 KB | 4 | 15 | $533.1 | 99 % | 1.04 ¢ | $7.0K | 1.5K | Buy day → | |
| 2026-09-02 | 20 | 132 KB | 5 | 34 | $1.2K | 78 % | 1.44 ¢ | $1.2K | 2.5K | Buy day → | |
| 2026-09-01 | 20 | 217 KB | 7 | 98 | $3.4K | 92 % | 2.15 ¢ | $2.2K | 5.1K | Buy day → | |
| 2026-08-31 | 20 | 303 KB | 8 | 105 | $1.2K | 83 % | 2.00 ¢ | $472.63 | 7.8K | Buy day → | |
| 2026-08-30 | 20 | 220 KB | 6 | 37 | $638.46 | 40 % | 1.69 ¢ | $594.58 | 5.9K | Buy day → | |
| 2026-08-29 | 20 | 104 KB | 4 | 20 | $131.54 | 73 % | 1.47 ¢ | $805.56 | 1.7K | Buy day → | |
| 2026-08-28 | 20 | 161 KB | 6 | 19 | $328.55 | 95 % | 1.51 ¢ | $395.17 | 2.3K | Buy day → | |
| 2026-08-27 | 20 | 193 KB | 3 | 10 | $1.9K | 98 % | 1.01 ¢ | $901.19 | 2.6K | Buy day → | |
| 2026-08-26 | 20 | 125 KB | 5 | 11 | $608.05 | 100 % | 1.80 ¢ | $727.6 | 1.9K | Buy day → | |
| 2026-08-25 | 20 | 213 KB | 6 | 23 | $1.3K | 98 % | 1.67 ¢ | $161.49 | 5.2K | Buy day → | |
| 2026-08-24 | 20 | 303 KB | 7 | 27 | $474.3 | 99 % | 3.36 ¢ | $92.06 | 8.4K | 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 Serie A 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 6 most traded Serie A contracts on 2026-09-22 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 5 still open at the last print: 32 trades, $114.47 USD turnover. The busiest contract was KXSERIEA-27-JUV with $84.04 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-JUV | 0.070 | 0.080 | 0.060 | 0.080 | 0.072 | open | 24 | $84.04 | 76 % | buy file → |
| KXSERIEA-27-INT | 0.610 | 0.610 | 0.570 | 0.570 | 0.574 | open | 3 | $24.28 | 20 % | buy file → |
| KXSERIEA-27-ROM | 0.220 | 0.220 | 0.210 | 0.210 | 0.210 | open | 1 | $2.09 | 0 % | buy file → |
| KXSERIEA-27-ACM | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | open | 1 | $1.88 | 100 % | buy file → |
| KXSERIEA-27-NAP | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | No | 2 | $1.68 | 100 % | buy file → |
| KXSERIEA-27-COM | 0.050 | 0.050 | 0.050 | 0.050 | 0.050 | open | 1 | $0.5 | 100 % | 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.
2026-09-21 — 6 contracts, 39 trades, $257.74 turnover
The 6 most traded Serie A contracts on 2026-09-21 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 5 still open at the last print: 39 trades, $257.74 USD turnover. The busiest contract was KXSERIEA-27-ROM with $93.74 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-ROM | 0.250 | 0.250 | 0.220 | 0.220 | 0.230 | open | 9 | $93.74 | 2 % | buy file → |
| KXSERIEA-27-INT | 0.620 | 0.620 | 0.540 | 0.610 | 0.568 | open | 13 | $91.49 | 30 % | buy file → |
| KXSERIEA-27-JUV | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | open | 1 | $38.89 | 100 % | buy file → |
| KXSERIEA-27-ACM | 0.070 | 0.070 | 0.060 | 0.070 | 0.067 | open | 9 | $28.65 | 100 % | buy file → |
| KXSERIEA-27-COM | 0.090 | 0.090 | 0.050 | 0.050 | 0.050 | open | 6 | $3.02 | 0 % | buy file → |
| KXSERIEA-27-FIO | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 1 | $1.95 | 100 % | buy file → |
2026-09-20 — 6 contracts, 86 trades, $721.82 turnover
The 6 most traded Serie A contracts on 2026-09-20 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 5 still open at the last print: 86 trades, $721.82 USD turnover. The busiest contract was KXSERIEA-27-INT with $443.02 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-INT | 0.510 | 0.620 | 0.510 | 0.620 | 0.557 | open | 25 | $443.02 | 96 % | buy file → |
| KXSERIEA-27-ROM | 0.260 | 0.280 | 0.230 | 0.250 | 0.246 | open | 33 | $144.82 | 41 % | buy file → |
| KXSERIEA-27-JUV | 0.050 | 0.070 | 0.050 | 0.070 | 0.067 | open | 6 | $56.38 | 100 % | buy file → |
| KXSERIEA-27-COM | 0.090 | 0.150 | 0.080 | 0.090 | 0.094 | open | 12 | $46.42 | 96 % | buy file → |
| KXSERIEA-27-ACM | 0.040 | 0.070 | 0.040 | 0.070 | 0.070 | open | 5 | $26.28 | 100 % | buy file → |
| KXSERIEA-27-NAP | 0.040 | 0.040 | 0.020 | 0.030 | 0.030 | No | 5 | $4.9 | 100 % | buy file → |
2026-09-19 — 6 contracts, 72 trades, $940.95 turnover
The 6 most traded Serie A contracts on 2026-09-19 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 5 still open at the last print: 72 trades, $940.95 USD turnover. The busiest contract was KXSERIEA-27-ROM with $667.45 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-ROM | 0.210 | 0.280 | 0.190 | 0.260 | 0.227 | open | 44 | $667.45 | 61 % | buy file → |
| KXSERIEA-27-COM | 0.090 | 0.090 | 0.090 | 0.090 | 0.090 | open | 5 | $203.08 | 100 % | buy file → |
| KXSERIEA-27-INT | 0.560 | 0.610 | 0.490 | 0.510 | 0.522 | open | 12 | $33.78 | 43 % | buy file → |
| KXSERIEA-27-NAP | 0.030 | 0.040 | 0.030 | 0.040 | 0.040 | open | 2 | $18.78 | 100 % | buy file → |
| KXSERIEA-27-ACM | 0.040 | 0.040 | 0.040 | 0.040 | 0.040 | open | 8 | $16.92 | 99 % | buy file → |
| KXSERIEA-27-LAZ | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 1 | $0.94 | 100 % | buy file → |
2026-09-18 — 6 contracts, 21 trades, $29.42 turnover
The 6 most traded Serie A contracts on 2026-09-18 — 0 closed Yes (≥ 0.97), 2 closed No (≤ 0.03), 4 still open at the last print: 21 trades, $29.42 USD turnover. The busiest contract was KXSERIEA-27-JUV with $12.6 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-JUV | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | open | 5 | $12.6 | 100 % | buy file → |
| KXSERIEA-27-COM | 0.100 | 0.100 | 0.080 | 0.080 | 0.087 | open | 7 | $8.38 | 100 % | buy file → |
| KXSERIEA-27-NAP | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | No | 4 | $6 | 100 % | buy file → |
| KXSERIEA-27-ROM | 0.160 | 0.200 | 0.160 | 0.200 | 0.200 | open | 2 | $1.2 | 100 % | buy file → |
| KXSERIEA-27-ACM | 0.070 | 0.070 | 0.060 | 0.060 | 0.069 | open | 2 | $1.06 | 89 % | buy file → |
| KXSERIEA-27-LAZ | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 1 | $0.18 | 100 % | buy file → |
2026-09-17 — 5 contracts, 53 trades, $247.66 turnover
The 5 most traded Serie A contracts on 2026-09-17 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 4 still open at the last print: 53 trades, $247.66 USD turnover. The busiest contract was KXSERIEA-27-ROM with $116.92 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-ROM | 0.190 | 0.220 | 0.160 | 0.160 | 0.209 | open | 25 | $116.92 | 81 % | buy file → |
| KXSERIEA-27-INT | 0.600 | 0.600 | 0.560 | 0.560 | 0.583 | open | 5 | $102.26 | 58 % | buy file → |
| KXSERIEA-27-COM | 0.060 | 0.100 | 0.060 | 0.070 | 0.078 | open | 21 | $27.81 | 48 % | buy file → |
| KXSERIEA-27-NAP | 0.040 | 0.040 | 0.030 | 0.030 | 0.030 | No | 1 | $0.6 | 100 % | buy file → |
| KXSERIEA-27-ACM | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | open | 1 | $0.07 | 100 % | buy file → |
2026-09-16 — 4 contracts, 32 trades, $63.78 turnover
The 4 most traded Serie A contracts on 2026-09-16 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 4 still open at the last print: 32 trades, $63.78 USD turnover. The busiest contract was KXSERIEA-27-COM with $27.13 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXSERIEA-27-COM | 0.080 | 0.100 | 0.060 | 0.060 | 0.074 | open | 24 | $27.13 | 41 % | buy file → |
| KXSERIEA-27-ROM | 0.190 | 0.210 | 0.190 | 0.190 | 0.209 | open | 6 | $17.78 | 95 % | buy file → |
| KXSERIEA-27-INT | 0.600 | 0.600 | 0.600 | 0.600 | 0.600 | open | 1 | $9.73 | 100 % | buy file → |
| KXSERIEA-27-ACM | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | open | 1 | $9.14 | 100 % | buy file → |
How a Serie A contract trades
On Kalshi, a Serie A contract trades until its event settles, is listed roughly 4 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 6 contracts captured on 2026-09-22.
Try a Serie A contract file for free
The busiest contract of a settled day, byte-identical to the files in the paid bundle — download the native tick file, a CSV/Parquet export, or replay its order book in the browser.
KXSERIEA-27-INT minute by minute — 2026-09-14
One-minute open/high/low/close, trades, USD turnover, quoted spread and top-of-book depth of the sample contract — the same 1-minute statistics every instrument’s analytics page offers.
KXSERIEA-27-INT traded in 9 of the day’s minutes (16:47–22:10 UTC): 17 trades, $601.67 turnover, opening at 0.540, ranging 0.520–0.600 and closing at 0.600.
| Minute (UTC) | Open | High | Low | Close | Trades | Turnover | Spread | Top-1 bid / ask |
|---|---|---|---|---|---|---|---|---|
| 16:47 | 0.540 | 0.550 | 0.550 | 0.550 | 3 | $1.65 | 1.00 ¢ | $39.6 / $74.54 |
| 16:48 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $1.1 | 1.00 ¢ | $39.6 / $72.99 |
| 16:49 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $1.1 | 1.00 ¢ | $39.6 / $71.49 |
| 16:50 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $1.1 | 1.00 ¢ | $39.6 / $69.98 |
| 16:52 | 0.550 | 0.540 | 0.540 | 0.540 | 1 | $4.86 | 1.00 ¢ | $37.25 / $69.85 |
| 18:57 | 0.540 | 0.520 | 0.520 | 0.520 | 1 | $4.16 | 2.74 ¢ | $23.1 / $55.29 |
| 19:50 | 0.520 | 0.540 | 0.540 | 0.540 | 1 | $4.32 | 3.00 ¢ | $32.81 / $63.99 |
| 22:09 | 0.540 | 0.600 | 0.520 | 0.600 | 4 | $97 | 6.19 ¢ | $32.81 / $342.87 |
| 22:10 | 0.600 | 0.600 | 0.600 | 0.600 | 1 | $486.38 | 9.00 ¢ | $32.81 / $252.63 |
1-minute statistics computed from the recorded ticks; minutes without a trade are omitted. Spread in contract price cents; top-1 depth = resting notional at the best bid / best ask. Every minute of every day is in the free analytics; the raw ticks are in the sample file above.
Why buy Kalshi Serie A 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 Serie A data — FAQ
What Kalshi Serie A data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the Serie A series on Kalshi (20 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for Serie A ?
KXSERIEA — 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 KXSERIEA-* contract listed that UTC day.
How far back does the Serie A data go?
Coverage runs March 2026 – present — 132 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 Serie A 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 Serie A 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 Serie A 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 Serie A 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 Serie A contracts trade per day on Kalshi?
On average 5 Serie A contracts had at least one trade per UTC day over the last 30 captured days on Kalshi, with about 7.4K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi Serie A contracts?
Over the last 30 captured days, the turnover-weighted quoted bid-ask spread was 2.00 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $1.1K per side, 88 % 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 Serie A contract on 2026-09-22?
KXSERIEA-27-JUV — $84.04 USD turnover over 24 trades on Kalshi. The 6 most traded contracts of the series did 32 trades and $114.47 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 Serie A trading day on Kalshi?
2026-09-05, with $4.3K of USD turnover over 48 trades across every Serie A contract of the day; the busiest full month was Aug 2026 at $17.7K. Since our statistics began on 2026-08-09 the series has recorded 1,426 trades and $33.1K over 45 captured days; the single biggest contract was KXSERIEA-27-INT on 2026-09-05 with $3.6K. Any of these days is a downloadable bundle.