Tick-by-tick trades and L2 order-book depth for 10 Bitcoin Up or Down series on Kalshi & Polymarket — Kalshi KXBTC15M (BTC Up/Down 15m), Polymarket BTC Up/Down 5m/15m/4h, Bitcoin Up or Down 1h, KXBTCD above/below, Bitcoin range. 2,593 series-days covering May 2025 – September 2026; 73.7M trades · $2.5B turnover in the 30 days to 2026-09-02. Sold as day bundles from €1.
BTC Up/Down 5m, 15m, 1h and 4h interval contracts plus Bitcoin price-level (above/below, range, multistrike) markets on Kalshi and Polymarket.
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.
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 | BTC Up/Down 15m | Kalshi | 46,206,406 | $1.8B | 28 | Buy days |
| 2 | Bitcoin price Above/below | Kalshi | 8,928,582 | $433.5M | 28 | Buy days |
| 3 | BTC Up/Down 5m | Polymarket | 14,379,254 | $214.1M | 30 | Buy days |
| 4 | BTC Up/Down 15m | Polymarket | 2,751,283 | $37.8M | 30 | Buy days |
| 5 | BTC Above (price strikes) | Polymarket | 193,397 | $29.6M | 30 | Buy days |
| 6 | BTC Up or Down 1h | Polymarket | 580,156 | $15.0M | 30 | Buy days |
| 7 | Bitcoin range | Kalshi | 540,871 | $6.8M | 28 | Buy days |
| 8 | BTC Up/Down 4h | Polymarket | 105,372 | $3.0M | 30 | Buy days |
Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-09-02. Series without statistics in the window are omitted.
| Venue | Series | With stats | Trades (30d) | Turnover (30d) |
|---|---|---|---|---|
| Kalshi | 4 | 3 | 55,675,859 | $2.2B |
| Polymarket | 6 | 5 | 18,009,462 | $299.6M |
30 days to 2026-09-02, from our own daily statistics per contract.
From the live prediction-movers snapshot (contracts of this topic's series only, settled markets filtered). Intraday — not part of the archived dataset.
| Contract | Venue | Price 24h ago → now | Δ | 24h turnover |
|---|---|---|---|---|
| bitcoin-above-78k-on-september-3-2026 | Polymarket | 0.20 → 0.84 | +0.64 | $24.2K |
| bitcoin-up-or-down-on-september-3-2026 | Polymarket | 0.51 → 0.96 | +0.45 | $70.9K |
| KXBTCD-26SEP0417-T76999.99 | Kalshi | 0.44 → 0.81 | +0.37 | $17.2K |
| KXBTCD-26SEP0417-T77499.99 | Kalshi | 0.35 → 0.71 | +0.36 | $12.2K |
| KXBTCD-26SEP0417-T76499.99 | Kalshi | 0.55 → 0.88 | +0.33 | $16.7K |
| KXBTCD-26SEP0417-T75999.99 | Kalshi | 0.64 → 0.92 | +0.28 | $22.0K |
| bitcoin-above-76k-on-september-4-2026 | Polymarket | 0.70 → 0.96 | +0.26 | $40.0K |
| KXBTCD-26SEP0417-T74999.99 | Kalshi | 0.81 → 0.95 | +0.14 | $16.9K |
Live contracts ranked by absolute 24-hour price change (contracts quote 0..1; settled or near-settled contracts excluded). Snapshot 2026-09-03 13:24 UTC. Full list in the prediction movers.
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 | |
|---|---|---|---|---|---|---|---|
| BTC Up/Down 5m | Polymarket | 5m | 203 | February 2026 – September 2026 | 211 GB | €1 | Buy days |
| BTC Up/Down 15m | Polymarket | 15m | 329 | October 2025 – September 2026 | 100 GB | €1 | Buy days |
| BTC Above (price strikes) | Polymarket | daily | 475 | May 2025 – September 2026 | 56.6 GB | €1 | Buy days |
| BTC Up or Down 1h | Polymarket | 1h | 476 | May 2025 – September 2026 | 37.2 GB | €1 | Buy days |
| BTC Up/Down 4h | Polymarket | 4h | 324 | October 2025 – September 2026 | 3.59 GB | €1 | Buy days |
| BTC Multistrike | Polymarket | event | 30 | August 2025 – September 2025 | 60.9 MB | €1 | Buy days |
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 | |
|---|---|---|---|---|---|---|---|
| Bitcoin price Above/below | Kalshi | 1h | 189 | February 2026 – September 2026 | 140 GB | €1 | Buy days |
| BTC Up/Down 15m | Kalshi | 15m | 189 | February 2026 – September 2026 | 52.0 GB | €1 | Buy days |
| Bitcoin range | Kalshi | 1h | 189 | February 2026 – September 2026 | 34.7 GB | €1 | Buy days |
| BTC price range EOY | Kalshi | annual | 189 | February 2026 – September 2026 | 1.78 GB | €1 | Buy days |
KXBTC15M is Kalshi’s "Bitcoin Up or Down" series: every 15 minutes a new contract settles on whether BTC closes above its opening reference price. It is the most-traded series on Kalshi by a wide margin. Our archive holds every 15-minute contract of every day as one bundle, with tick-level trades and order books.
Yes — Polymarket runs BTC Up/Down at 5-minute, 15-minute, 1-hour and 4-hour intervals; each interval is its own family here (btc-updown-5m-, btc-updown-15m-, bitcoin-up-or-down-, btc-updown-4h-).
That is what it is bought for — see the guides on training data for up/down bots and on Kalshi vs Polymarket order books linked below. Pair it with our Binance tick data for the underlying spot price.
Coverage runs May 2025 – September 2026 — 2,593 series-days across 10 series on Kalshi & Polymarket. Each series page lists its exact span.
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.
Typically €1 per series-day bundle — every contract of the series for that UTC day, with invoice on checkout. Pick days in the shop calendar.