MLS & US Soccer Prediction Market Data
Tick-by-tick trades and L2 order-book depth for 36 MLS & US Soccer series on Kalshi & Polymarket & predict.fun — MLS games, spreads, totals and correct scores, Leagues Cup, USL Championship, NWSL. 4,107 series-days covering May 2025 – present; 1.8M trades · $55.2M turnover over the last 30 captured days. Every contract captured co-located with nanosecond venue and receive timestamps — sold as day bundles, €1 per day, bought as a guest with instant download.
MLS & US Soccer on Kalshi & Polymarket & predict.fun
MLS, Leagues Cup, USL Championship and NWSL markets.
Every series below is archived at full feed resolution — each contract file carries every trade print (price, size, side) and Level-2 order-book updates in one normalized, zstd-compressed schema. A series-day bundle holds all contracts of the series for one UTC day.
Most traded MLS & US Soccer series (last 30 days)
Ranked by USD turnover from our own daily statistics — the series a market maker or bot builder should start with.
| # | Series | Venue | Trades (30d) | Turnover (30d) | Days | |
|---|---|---|---|---|---|---|
| 1 | Major League Soccer Game | Kalshi | 726,089 | $24.0M | 30 | Buy days |
| 2 | MLS Soccer | Polymarket | 108,181 | $8.9M | 30 | Buy days |
| 3 | MLS Total | Kalshi | 176,131 | $8.1M | 30 | Buy days |
| 4 | USL Championship Game | Kalshi | 226,273 | $3.0M | 30 | Buy days |
| 5 | Canadian Premier League | Kalshi | 92,045 | $2.2M | 30 | Buy days |
| 6 | NWSL Game | Kalshi | 171,180 | $1.9M | 23 | Buy days |
| 7 | 1st Half Total (KXMLS1HTOTAL) | Kalshi | 32,887 | $1.2M | 26 | Buy days |
| 8 | MLS BTTS | Kalshi | 28,813 | $1.2M | 30 | Buy days |
| 9 | MLS Spread | Kalshi | 43,114 | $1.1M | 30 | Buy days |
| 10 | Point Total (KXUSLTOTAL) | Kalshi | 52,123 | $1.1M | 29 | Buy days |
Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-10-13. Series without statistics in the window are omitted.
MLS & US Soccer activity per venue
| Venue | Series | With stats | Trades (30d) | Turnover (30d) |
|---|---|---|---|---|
| Kalshi | 31 | 21 | 1,634,401 | $45.5M |
| Polymarket | 4 | 4 | 140,821 | $9.7M |
| predict.fun | 1 | 1 | 357 | $21.4K |
30 days to 2026-10-13, from our own daily statistics per contract.
MLS & US Soccer — development since capture
9,426,983 trades and $329.3M of USD turnover across 36 series since 2026-07-08; busiest single series-day 2026-07-23 with $11.3M, biggest contract KXLEAGUESCUPGAME-26AUG09AMEPOR-AME (2026-08-10, $2.2M).
| Month | Series active | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|---|
| Oct 2026 (month to date) | 26 | 13 | 753,638 | $21.5M | $1.7M | 7,574 | 225.5M | — |
| Sep 2026 | 35 | 30 | 2,348,727 | $77.0M | $2.6M | 27,126 | 693.7M | −58.5 % |
| Aug 2026 | 35 | 31 | 5,278,629 | $185.6M | $6.0M | 32,598 | 834.5M | +311.0 % |
| Jul 2026 | 20 | 24 | 1,045,989 | $45.2M | $1.9M | — | — | — |
MLS & US Soccer series — 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.
MLS & US Soccer — turnover by weekday
Sundays are the busiest day at about $6.7M of USD turnover, averaged over the captured days of the last 30.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $1.5M | 42.8K | 5 | |
| Tuesday | $87.5K | 2.7K | 5 | |
| Wednesday | $961.8K | 30.0K | 4 | |
| Thursday | $1.1M | 47.6K | 4 | |
| Friday | $708.1K | 17.3K | 4 | |
| Saturday | $2.3M | 73.7K | 4 | |
| Sunday | $6.7M | 218.3K | 4 |
MLS & US Soccer series — 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 —.
Rising MLS & US Soccer series — 30 days vs the 30 before
| # | Series | Venue | Turnover (30d) | Prior 30d | Growth (avg / day) | Trades (30d) |
|---|---|---|---|---|---|---|
| 1 | Canadian Premier League | Kalshi | $2.2M | $289.7K | +674.7 % | 92,045 |
| 2 | MLS Western Conference winner? (KXMLSEAST) | Kalshi | $20.3K | $7.9K | +155.5 % | 1,770 |
| 3 | Spread (KXUSLSPREAD) | Kalshi | $98.0K | $46.6K | +103.2 % | 8,121 |
| 4 | Point Total (KXUSLTOTAL) | Kalshi | $1.1M | $688.3K | +48.9 % | 52,123 |
| 5 | USL Championship | Polymarket | $442.5K | $381.2K | +16.1 % | 17,561 |
Growth of average USD turnover per captured day, the 30 days to 2026-10-13 against the 30 days before; series need ≥ 10 captured days in both windows and ≥ $10K of turnover in the current one. From our own daily statistics.
MLS & US Soccer prediction markets — trades and turnover per day
Every captured UTC day of the last 30, summed over the 36 MLS & US Soccer series — how much these markets trade day by day, from our own tick capture.
| UTC day | Series with stats | Contracts traded | Trades | Turnover | Buy share | L2 updates |
|---|---|---|---|---|---|---|
| 2026-10-13 | 25 | 369 | 2,157 | $77.7K | 78 % | 12.5M |
| 2026-10-12 | 24 | 303 | 20,612 | $794.4K | 60 % | 9.8M |
| 2026-10-11 | 24 | 1,762 | 256,705 | $7.6M | 62 % | 46.7M |
| 2026-10-10 | 24 | 1,588 | 107,057 | $4.1M | 67 % | 32.6M |
| 2026-10-09 | 24 | 444 | 3,272 | $50.8K | 69 % | 13.0M |
| 2026-10-08 | 23 | 216 | 2,454 | $52.7K | 67 % | 9.9M |
| 2026-10-07 | 23 | 327 | 66,127 | $2.3M | 60 % | 18.0M |
| 2026-10-06 | 21 | 270 | 2,893 | $220.4K | 52 % | 12.5M |
| 2026-10-05 | 24 | 201 | 10,506 | $153.8K | 65 % | 9.3M |
| 2026-10-04 | 19 | 553 | 86,459 | $1.1M | 67 % | 19.1M |
| 2026-10-03 | 19 | 554 | 62,834 | $946.9K | 68 % | 13.8M |
| 2026-10-02 | 25 | 429 | 44,423 | $2.1M | 52 % | 10.5M |
| 2026-10-01 | 25 | 558 | 88,139 | $2.0M | 63 % | 17.8M |
| 2026-09-30 | 25 | 510 | 24,256 | $847.2K | 67 % | 11.5M |
| 2026-09-29 | 25 | 225 | 1,918 | $26.6K | 83 % | 5.5M |
| 2026-09-28 | 25 | 323 | 56,951 | $2.3M | 61 % | 7.8M |
| 2026-09-27 | 25 | 1,898 | 261,724 | $9.0M | 67 % | 35.9M |
| 2026-09-26 | 24 | 1,737 | 64,195 | $2.0M | 62 % | 25.4M |
| 2026-09-25 | 24 | 592 | 11,848 | $175.0K | 70 % | 12.5M |
| 2026-09-24 | 24 | 538 | 63,160 | $1.9M | 61 % | 16.5M |
| 2026-09-23 | 24 | 500 | 20,341 | $484.0K | 69 % | 17.2M |
| 2026-09-22 | 24 | 352 | 2,909 | $41.9K | 78 % | 12.3M |
| 2026-09-21 | 23 | 542 | 61,047 | $1.6M | 61 % | 16.0M |
| 2026-09-20 | 24 | 2,069 | 268,362 | $9.1M | 64 % | 40.2M |
| 2026-09-19 | 24 | 1,586 | 60,710 | $2.2M | 65 % | 19.8M |
| 2026-09-18 | 24 | 718 | 9,738 | $512.7K | 79 % | 12.0M |
| 2026-09-17 | 24 | 428 | 36,773 | $631.5K | 61 % | 16.4M |
| 2026-09-16 | 21 | 356 | 9,212 | $170.3K | 70 % | 11.9M |
| 2026-09-15 | 18 | 329 | 3,805 | $71.0K | 77 % | 11.4M |
| 2026-09-14 | 24 | 492 | 64,992 | $2.7M | 60 % | 15.1M |
Per UTC day, summed over every MLS & US Soccer series that has statistics for that day, from every trade print of every contract in our tick archive. Trades and USD turnover are exact; contracts traded, buy share and L2 (order-book) updates exist for days captured with the extended statistics — earlier days show —.
Most traded MLS & US Soccer contracts on 2026-10-13
The single event contracts with the most USD turnover on the newest captured day — with open and close price and the outcome implied by the last print.
| Contract | Series | Venue | Open → Close | Implied outcome | Trades | Turnover | |
|---|---|---|---|---|---|---|---|
| KXMLSGAME-26OCT14MIANYC-MIA | Major League Soccer Game | Kalshi | 0.650 → 0.660 | open | 244 | $16.7K | buy file → |
| mls-dcu-nyr-2026-10-14-total-3pt5 | MLS Soccer | Polymarket | 0.410 → 0.400 | open | 98 | $11.6K | buy file → |
| mls-dcu-nyr-2026-10-14-total-2pt5 | MLS Soccer | Polymarket | 0.650 → 0.630 | open | 48 | $6.6K | buy file → |
| KXMLSGAME-26OCT14STLVAN-STL | Major League Soccer Game | Kalshi | 0.430 → 0.440 | open | 46 | $5.4K | buy file → |
| KXMLSGAME-26OCT14NSHSKC-NSH | Major League Soccer Game | Kalshi | 0.790 → 0.800 | open | 38 | $4.2K | buy file → |
| uslc-spo-bir-2026-10-10-total-0pt5 | USL Championship | Polymarket | 0.957 → 0.950 | open | 4 | $3.7K | buy file → |
| KXMLSBTTS-26OCT14STLVAN-BTTS | MLS BTTS | Kalshi | 0.680 → 0.660 | open | 6 | $1.5K | buy file → |
| mls-rsl-sje-2026-10-14-rsl | MLS Soccer | Polymarket | 0.470 → 0.520 | open | 16 | $1.4K | buy file → |
| KXMLSGAME-26OCT14CHIPHI-CHI | Major League Soccer Game | Kalshi | 0.380 → 0.390 | open | 12 | $1.0K | buy file → |
| KXMLSTOTAL-26OCT14MIANYC-1 | MLS Total | Kalshi | 0.960 → 0.980 | Yes | 4 | $827.12 | buy file → |
Single contracts ranked by USD turnover on 2026-10-13 (UTC), from every trade print in our tick archive. Prices quote 0..1; the implied outcome reads the last print of the day (≥ 0.97 Yes/Up, ≤ 0.03 No/Down) — venues publish the official result. Each contract’s day file is sold individually, the whole series day as a bundle.
Kalshi MLS & US Soccer series
Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| Major League Soccer Game | Kalshi | event | 182 | February 2026 – present | 5.99 GB | €1 | Buy days |
| MLS Total | Kalshi | event | 173 | March 2026 – present | 3.41 GB | €1 | Buy days |
| USL Championship Game | Kalshi | event | 205 | March 2026 – present | 3.00 GB | €1 | Buy days |
| NWSL Game | Kalshi | event | 159 | March 2026 – present | 2.08 GB | €1 | Buy days |
| MLS Spread | Kalshi | event | 173 | March 2026 – present | 1.38 GB | €1 | Buy days |
| Leagues Cup Game | Kalshi | event | 40 | July 2026 – September 2026 | 1.32 GB | €1 | Buy days |
| Correct Score (KXMLSSCORE) | Kalshi | event | 77 | July 2026 – present | 950 MB | €1 | Buy days |
| MLS Cup champion | Kalshi | event | 224 | March 2026 – present | 796 MB | €1 | Buy days |
| Point Total (KXUSLTOTAL) | Kalshi | event | 87 | July 2026 – present | 715 MB | €1 | Buy days |
| Point Total (KXLEAGUESCUPTOTAL) | Kalshi | event | 37 | July 2026 – September 2026 | 616 MB | €1 | Buy days |
| MLS BTTS | Kalshi | event | 173 | March 2026 – present | 543 MB | €1 | Buy days |
| Team Total (KXMLSTEAMTOTAL) | Kalshi | event | 74 | July 2026 – present | 498 MB | €1 | Buy days |
| Correct Score (KXLEAGUESCUPSCORE) | Kalshi | event | 28 | July 2026 – September 2026 | 451 MB | €1 | Buy days |
| Canadian Premier League | Kalshi | event | 157 | April 2026 – present | 430 MB | €1 | Buy days |
| Team Total (KXLEAGUESCUPTEAMTOTAL) | Kalshi | event | 28 | July 2026 – September 2026 | 407 MB | €1 | Buy days |
| 1st Half Winner (KXMLS1H) | Kalshi | event | 74 | July 2026 – present | 378 MB | €1 | Buy days |
| 1st Half Total (KXMLS1HTOTAL) | Kalshi | event | 74 | July 2026 – present | 364 MB | €1 | Buy days |
| Spread (KXLEAGUESCUPSPREAD) | Kalshi | event | 37 | July 2026 – September 2026 | 360 MB | €1 | Buy days |
| Spread (KXUSLSPREAD) | Kalshi | event | 87 | July 2026 – present | 331 MB | €1 | Buy days |
| MLS Western Conference winner? (KXMLSEAST) | Kalshi | annual | 224 | March 2026 – present | 216 MB | €1 | Buy days |
| 1st Half Winner (KXLEAGUESCUP1H) | Kalshi | event | 28 | July 2026 – September 2026 | 192 MB | €1 | Buy days |
| 1st Half Correct Score (KXMLS1HSCORE) | Kalshi | event | 44 | August 2026 – present | 166 MB | €1 | Buy days |
| 1st Half Total (KXLEAGUESCUP1HTOTAL) | Kalshi | event | 28 | July 2026 – September 2026 | 165 MB | €1 | Buy days |
| First Team to Score | Kalshi | event | 74 | July 2026 – present | 147 MB | €1 | Buy days |
| College Soccer Game | Kalshi | event | 15 | August 2026 – September 2026 | 132 MB | €1 | Buy days |
| MLS Western Conference winner? (KXMLSWEST) | Kalshi | annual | 224 | March 2026 – present | 103 MB | €1 | Buy days |
| USL Cup Game | Kalshi | event | 62 | May 2026 – present | 99.3 MB | €1 | Buy days |
| First Team to Score (KXLEAGUESCUPFTTS) | Kalshi | event | 28 | July 2026 – September 2026 | 95.6 MB | €1 | Buy days |
| MLS Transfers | Kalshi | event | 148 | April 2026 – September 2026 | 21.0 MB | €1 | Buy days |
| NWSL Champion | Kalshi | annual | 157 | May 2026 – present | 20.8 MB | €1 | Buy days |
| USL Championship | Kalshi | event | 216 | March 2026 – present | 15.3 MB | €1 | Buy days |
Polymarket MLS & US Soccer series
Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| MLS Soccer | Polymarket | event | 407 | July 2025 – present | 51.0 GB | €1 | Buy days |
| NWSL Soccer | Polymarket | event | 184 | March 2026 – present | 14.3 GB | €1 | Buy days |
| Leagues Cup | Polymarket | event | 91 | May 2025 – present | 7.50 GB | €1 | Buy days |
| USL Championship | Polymarket | event | 83 | July 2026 – present | 4.97 GB | €1 | Buy days |
predict.fun MLS & US Soccer series
Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| MLS Soccer | predict.fun | event | 5 | October 2026 – present | 246 MB | €1 | Buy days |
Why buy MLS & US Soccer prediction-market 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
MLS & US Soccer prediction-market data — FAQ
Does Kalshi have MLS markets?
Yes — MLS games, spreads, totals, team totals, first-half lines and correct scores, plus Leagues Cup games, spreads, totals and first team to score, and USL totals. Polymarket MLS, Leagues Cup, USL Championship and NWSL each form a family.
How is MLS prediction-market data sold?
One purchase covers every contract of the series for one UTC day — every trade print and the complete Level-2 book per contract, captured co-located with nanosecond timestamps — €1 per series-day, bought as a guest with instant download.
How far back does the MLS & US Soccer data go?
Coverage runs May 2025 – present — 4,107 series-days across 36 series on Kalshi & Polymarket & predict.fun. Each series page lists its exact span.
Can I get MLS & US Soccer prediction-market 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. Both venues record 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 MLS & US Soccer prediction-market data cost?
€1 per series-day bundle — every contract of the series for that UTC day — no subscription, no minimum order. Pick days in the shop calendar, pay as a guest, download immediately.
Do I need an account or a sales call?
No. Pick the MLS & US Soccer 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 MLS & US Soccer 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 busiest MLS & US Soccer trading day?
2026-07-23 — $11.3M of USD turnover over 244,615 trades in a single series-day. Since our statistics began on 2026-07-08, 36 MLS & US Soccer series recorded 9,426,983 trades and $329.3M in total; the biggest single contract was KXLEAGUESCUPGAME-26AUG09AMEPOR-AME on 2026-08-10 at $2.2M. Sundays are the busiest weekday at about $6.7M per day.