IPOs & Corporate Actions Prediction Market Da
Tick-by-tick trades and L2 order-book depth for 27 IPOs & Corporate Actions series on Kalshi — When will OpenAI, Anthropic, Starlink, Stripe, Discord, Canva, Databricks, Anduril, Ramp, Rippling, Deel, Brex or Skims IPO; IPOs this year; company mergers and acquisitions; S&P 500 and DJIA additions and removals. 5,405 series-days covering March 2026 – present; 15.4K trades · $439.0K 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.
IPOs & Corporate Actions on Kalshi
IPO timing markets for OpenAI, Anthropic, SpaceX/Starlink, Stripe, Databricks, Discord, Canva and more; mergers, acquisitions and index additions/removals.
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 IPOs & Corporate Actions 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 | Anthropic IPO | Kalshi | 7,926 | $322.8K | 30 | Buy days |
| 2 | IPOs | Kalshi | 3,283 | $60.1K | 30 | Buy days |
| 3 | Company Merger | Kalshi | 2,365 | $36.7K | 30 | Buy days |
| 4 | When will Brex IPo | Kalshi | 297 | $5.8K | 30 | Buy days |
| 5 | When will OPENAI Announce IPO? | Kalshi | 482 | $3.8K | 30 | Buy days |
| 6 | companies acquired this year | Kalshi | 305 | $3.3K | 30 | Buy days |
| 7 | When will Discord IPO | Kalshi | 143 | $1.5K | 30 | Buy days |
| 8 | Companies added to SP500 | Kalshi | 177 | $1.0K | 30 | Buy days |
| 9 | Databricks IPO | Kalshi | 34 | $774.46 | 30 | Buy days |
| 10 | Canva IPO | Kalshi | 28 | $690.16 | 30 | Buy days |
Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-10-12. Series without statistics in the window are omitted.
IPOs & Corporate Actions — development since capture
31,001 trades and $862.5K of USD turnover across 27 series since 2026-08-09; busiest single series-day 2026-10-01 with $49.6K, biggest contract KXIPOANTHROPIC-DATE-27JAN01 (2026-10-01, $34.0K).
| Month | Series active | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|---|
| Oct 2026 (month to date) | 27 | 12 | 5,752 | $179.1K | $14.9K | 498 | 3.7M | — |
| Sep 2026 | 27 | 30 | 14,905 | $409.8K | $13.7K | 1,468 | 5.6M | +49.8 % |
| Aug 2026 | 27 | 23 | 10,344 | $273.6K | $11.9K | 1,231 | 4.1M | — |
IPOs & Corporate Actions 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.
IPOs & Corporate Actions — turnover by weekday
Thursdays are the busiest day at about $25.4K of USD turnover, averaged over the captured days of the last 30.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $14.5K | 471.6 | 5 | |
| Tuesday | $12.2K | 588 | 4 | |
| Wednesday | $8.1K | 409.5 | 4 | |
| Thursday | $25.4K | 531.5 | 4 | |
| Friday | $16.9K | 579.75 | 4 | |
| Saturday | $12.0K | 442.75 | 4 | |
| Sunday | $13.6K | 566.8 | 5 |
IPOs & Corporate Actions 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 IPOs & Corporate Actions series — 30 days vs the 30 before
| # | Series | Venue | Turnover (30d) | Prior 30d | Growth (avg / day) | Trades (30d) |
|---|---|---|---|---|---|---|
| 1 | Anthropic IPO | Kalshi | $322.8K | $214.0K | +50.9 % | 7,926 |
| 2 | IPOs | Kalshi | $60.1K | $41.7K | +44.0 % | 3,283 |
| 3 | Company Merger | Kalshi | $36.7K | $47.6K | −22.8 % | 2,365 |
Growth of average USD turnover per captured day, the 30 days to 2026-10-12 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.
IPOs & Corporate Actions prediction markets — trades and turnover per day
Every captured UTC day of the last 30, summed over the 27 IPOs & Corporate Actions 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 |
|---|---|---|---|---|---|---|
| 2026-10-12 | 27 | 47 | 335 | $4.8K | 40 % | 132.6K |
| 2026-10-11 | 27 | 40 | 554 | $2.1K | 57 % | 102.7K |
| 2026-10-10 | 27 | 26 | 190 | $4.9K | 28 % | 43.2K |
| 2026-10-09 | 27 | 40 | 352 | $17.3K | 15 % | 83.6K |
| 2026-10-08 | 27 | 37 | 367 | $26.8K | 11 % | 199.4K |
| 2026-10-07 | 27 | 42 | 334 | $8.4K | 39 % | 641.9K |
| 2026-10-06 | 27 | 43 | 317 | $5.0K | 60 % | 433.1K |
| 2026-10-05 | 27 | 46 | 376 | $6.0K | 50 % | 227.6K |
| 2026-10-04 | 27 | 45 | 293 | $4.3K | 60 % | 86.5K |
| 2026-10-03 | 27 | 48 | 516 | $19.1K | 52 % | 304.7K |
| 2026-10-02 | 27 | 38 | 946 | $22.7K | 26 % | 305.8K |
| 2026-10-01 | 27 | 46 | 1,172 | $57.8K | 71 % | 1.1M |
| 2026-09-30 | 27 | 46 | 555 | $7.2K | 61 % | 987.2K |
| 2026-09-29 | 27 | 51 | 1,176 | $28.1K | 57 % | 857.8K |
| 2026-09-28 | 27 | 40 | 377 | $11.8K | 57 % | 137.1K |
| 2026-09-27 | 27 | 35 | 216 | $6.2K | 51 % | 107.3K |
| 2026-09-26 | 27 | 43 | 330 | $8.2K | 44 % | 69.5K |
| 2026-09-25 | 27 | 42 | 294 | $3.7K | 89 % | 135.7K |
| 2026-09-24 | 27 | 33 | 243 | $2.9K | 54 % | 116.8K |
| 2026-09-23 | 27 | 47 | 263 | $3.3K | 38 % | 174.6K |
| 2026-09-22 | 27 | 48 | 373 | $5.1K | 42 % | 88.6K |
| 2026-09-21 | 27 | 52 | 466 | $14.8K | 68 % | 70.9K |
| 2026-09-20 | 27 | 41 | 548 | $15.0K | 61 % | 109.6K |
| 2026-09-19 | 27 | 46 | 735 | $15.7K | 36 % | 151.4K |
| 2026-09-18 | 27 | 39 | 727 | $23.9K | 48 % | 111.6K |
| 2026-09-17 | 27 | 51 | 344 | $14.2K | 47 % | 201.5K |
| 2026-09-16 | 27 | 52 | 486 | $13.7K | 38 % | 100.8K |
| 2026-09-15 | 27 | 49 | 486 | $10.7K | 70 % | 124.6K |
| 2026-09-14 | 27 | 53 | 804 | $35.1K | 37 % | 81.6K |
| 2026-09-13 | 27 | 62 | 1,223 | $40.4K | 43 % | 75.6K |
Per UTC day, summed over every IPOs & Corporate Actions 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 IPOs & Corporate Actions contracts on 2026-10-12
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 | |
|---|---|---|---|---|---|---|---|
| KXIPO-26-ANTHROPIC | IPOs | Kalshi | 0.740 → 0.690 | open | 68 | $1.5K | buy file → |
| KXIPOANTHROPIC-DATE-26DEC01 | Anthropic IPO | Kalshi | 0.680 → 0.640 | open | 29 | $1.4K | buy file → |
| KXIPOANTHROPIC-DATE-27JAN01 | Anthropic IPO | Kalshi | 0.710 → 0.700 | open | 96 | $585.39 | buy file → |
| KXIPOANTHROPIC-DATE-27FEB01 | Anthropic IPO | Kalshi | 0.820 → 0.800 | open | 6 | $334.26 | buy file → |
| KXCOMPANYACTIONMERGER-27-27MAR01 | Company Merger | Kalshi | 0.300 → 0.310 | open | 9 | $210.24 | buy file → |
| KXIPODISCORD-27JAN01 | When will Discord IPO | Kalshi | 0.420 → 0.180 | open | 24 | $138.21 | buy file → |
| KXIPOANTHROPIC-DATE-27APR01 | Anthropic IPO | Kalshi | 0.860 → 0.850 | open | 6 | $124.85 | buy file → |
| KXIPOANTHROPIC-DATE-27MAR01 | Anthropic IPO | Kalshi | 0.830 → 0.820 | open | 4 | $110.67 | buy file → |
| KXCOMPANYACTIONMERGER-27-28JAN01 | Company Merger | Kalshi | 0.680 → 0.670 | open | 4 | $88.59 | buy file → |
| KXIPO-26-OURA | IPOs | Kalshi | 0.050 → 0.080 | open | 4 | $64.38 | buy file → |
Single contracts ranked by USD turnover on 2026-10-12 (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 IPOs & Corporate Actions 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 | |
|---|---|---|---|---|---|---|---|
| IPOs | Kalshi | event | 223 | March 2026 – present | 248 MB | €1 | Buy days |
| Anthropic IPO | Kalshi | event | 195 | April 2026 – present | 128 MB | €1 | Buy days |
| Company Merger | Kalshi | event | 201 | March 2026 – present | 87.1 MB | €1 | Buy days |
| When will OPENAI Announce IPO? | Kalshi | event | 223 | March 2026 – present | 84.3 MB | €1 | Buy days |
| companies acquired this year | Kalshi | event | 147 | May 2026 – present | 66.4 MB | €1 | Buy days |
| Companies added to SP500 | Kalshi | event | 223 | March 2026 – present | 46.6 MB | €1 | Buy days |
| When will Discord IPO | Kalshi | event | 223 | March 2026 – present | 37.1 MB | €1 | Buy days |
| When will anduril IPO | Kalshi | event | 223 | March 2026 – present | 28.5 MB | €1 | Buy days |
| When will starlink IPO | Kalshi | event | 223 | March 2026 – present | 26.9 MB | €1 | Buy days |
| When will Stripe Announce IPO? | Kalshi | event | 223 | March 2026 – present | 18.8 MB | €1 | Buy days |
| When will deel IPO | Kalshi | event | 223 | March 2026 – present | 16.9 MB | €1 | Buy days |
| When will Fannie Mae IPO? | Kalshi | event | 223 | March 2026 – present | 16.3 MB | €1 | Buy days |
| When will beast indsutries ipo | Kalshi | event | 223 | March 2026 – present | 15.9 MB | €1 | Buy days |
| When Will Glean IPO | Kalshi | event | 223 | March 2026 – present | 15.2 MB | €1 | Buy days |
| When will Ramp IPO | Kalshi | event | 223 | March 2026 – present | 15.2 MB | €1 | Buy days |
| When will Rippling IPO | Kalshi | event | 223 | March 2026 – present | 14.1 MB | €1 | Buy days |
| When will Appsflyer IPO | Kalshi | event | 223 | March 2026 – present | 13.7 MB | €1 | Buy days |
| Databricks IPO | Kalshi | event | 133 | June 2026 – present | 13.7 MB | €1 | Buy days |
| Canva IPO | Kalshi | event | 133 | June 2026 – present | 13.4 MB | €1 | Buy days |
| When will Oli Pop Ipo? | Kalshi | event | 223 | March 2026 – present | 13.2 MB | €1 | Buy days |
| Skims IPO | Kalshi | event | 133 | June 2026 – present | 12.5 MB | €1 | Buy days |
| Waymo IPO | Kalshi | event | 133 | June 2026 – present | 12.4 MB | €1 | Buy days |
| When will Freddie Mac IPO? | Kalshi | event | 223 | March 2026 – present | 12.1 MB | €1 | Buy days |
| Companies removed from SP500 | Kalshi | event | 206 | March 2026 – present | 11.2 MB | €1 | Buy days |
| When will Cluely IPO | Kalshi | event | 223 | March 2026 – present | 10.8 MB | €1 | Buy days |
| When will Brex IPo | Kalshi | event | 223 | March 2026 – present | 10.7 MB | €1 | Buy days |
| Companies removed from DJIA | Kalshi | event | 110 | June 2026 – present | 8.81 MB | €1 | Buy days |
Why buy IPOs & Corporate Actions 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
IPOs & Corporate Actions prediction-market data — FAQ
Does Kalshi have IPO markets?
Yes — per-company IPO-timing series (OpenAI, Anthropic, Starlink, Stripe, Databricks, Discord, Canva, Anduril, Ramp, Rippling, Deel, Brex, Skims, Glean, Cluely, Olipop, Whoop, Oura, AppsFlyer, Beast Industries, Fannie Mae, Freddie Mac, Waymo) plus IPO counts, acquisitions announced, mergers and index-membership changes.
How is IPO 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 IPOs & Corporate Actions data go?
Coverage runs March 2026 – present — 5,405 series-days across 27 series on Kalshi. Each series page lists its exact span.
Can I get IPOs & Corporate Actions 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. 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 IPOs & Corporate Actions 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 IPOs & Corporate Actions 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 IPOs & Corporate Actions 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 IPOs & Corporate Actions trading day?
2026-10-01 — $49.6K of USD turnover over 681 trades in a single series-day. Since our statistics began on 2026-08-09, 27 IPOs & Corporate Actions series recorded 31,001 trades and $862.5K in total; the biggest single contract was KXIPOANTHROPIC-DATE-27JAN01 on 2026-10-01 at $34.0K. Thursdays are the busiest weekday at about $25.4K per day.