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Kalshi KXBILLS — Bills become law this year? Historical Data

Tick-by-tick trades and order-book depth for every Kalshi “Bills become law this year?” contract — 193 trading days as downloadable day bundles, €1 per day.

Browse & buy Bills become law this year? days Kalshi venue data →Free sample contract →

Trading days

193

Coverage

March 2026 – September 2026

Archive size

137 MB

Price per day

€1

Activity & identifier

Bills become law this year? on Kalshi — activity

Trades and USD turnover summed over every contract of the series across 30 captured days to 2026-09-12, 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.

Series ticker

KXBILLS

Avg trades / day

Avg turnover / day

$184.3

Captured days

Trades (30d)

726

Turnover (30d)

$5.5K

Contracts traded / day

Buy share

44 %

Avg spread

4.56 ¢

Top-1 depth

$109.2

L2 updates / day

41.2K

Files on latest day

What's in a bundle

One purchase, the whole series for a day

A series-day bundle contains every Bills become law this year? contract that traded on Kalshi on that UTC day — 30 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 – September 2026 — 193 trading days, 137 MB compressed in total. A day typically holds 24 contract files (up to 30 on the busiest day, 6.13 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.

Daily statistics

Bills become law this year? — 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
2026-09-12	30	861 KB	12	38	$469.08	6 %	2.57 ¢	$46.8	16.5K	Buy day →
2026-09-11	30	1.29 MB	10	60	$229.36	76 %	6.17 ¢	$34.45	33.9K	Buy day →
2026-09-10	30	857 KB	12	57	$615.73	12 %	2.79 ¢	$24.67	26.4K	Buy day →
2026-09-09	30	3.89 MB	5	40	$269.24	100 %	16.4 ¢	$30.62	149.9K

Contracts

Most traded Bills become law this year? 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 10 most traded Bills become law this year? contracts on 2026-09-12 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 10 still open at the last print: 35 trades, $468.13 USD turnover. The busiest contract was KXBILLS-AIO with $208.28 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-AIO	0.300	0.300	0.260	0.260	0.260	open	7	$208.28	0 %	buy file →
KXBILLS-CHIP	0.300	0.300	0.260	0.290	0.281	open	10	$144.25	1 %	buy file →
KXBILLS-26MAY-RAIL	0.130	0.130	0.110	0.110	0.111	open	3	$36.72	0 %	buy file →
KXBILLS-E15	0.130

Contract anatomy

How a Bills become law this year? contract trades

Listed ahead

80 min

Tick size

0.01

Contracts measured

Quoted in

USD

On Kalshi, a Bills become law this year? contract trades until its event settles, is listed roughly 80 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 10 contracts captured on 2026-09-12.

Free sample

Try a Bills become law this year? 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.

KXBILLS-NIL2026-09-03 (UTC) · 162 KB · 9 trades · $256.06 turnover · 0.410 → 0.350Full tick file: every trade print and Level-2 order-book update of the contract on that day, zstd-compressed JSON lines — no account needed.

Replay

Intraday profile

KXBILLS-NIL minute by minute — 2026-09-03

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.

KXBILLS-NIL traded in 4 of the day’s minutes (03:25–21:58 UTC): 9 trades, $256.06 turnover, opening at 0.410, ranging 0.350–0.400 and closing at 0.350.

Minute (UTC)	Open	High	Low	Close	Trades	Turnover	Spread	Top-1 bid / ask
03:25	0.410	0.380	0.380	0.380	1	$1.54	3.00 ¢	$191.87 / $6.58
04:29	0.380	0.380	0.380	0.380	2	$38	2.76 ¢	$192.75 / $6.58
19:38	0.380	0.400	0.400	0.400	1	$200	3.44 ¢	$119.65 / $1.04

FAQ

Kalshi Bills become law this year? data — FAQ

What Kalshi Bills become law this year? data can I download?

Tick-by-tick trades and Level-2 order-book depth for every contract of the Bills become law this year? series on Kalshi (30 contract files on the latest day). One bundle = one UTC day of the whole series.

What is the Kalshi series ticker for Bills become law this year??

KXBILLS — 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 KXBILLS-* contract that traded that UTC day.

How far back does the Bills become law this year? data go?

Coverage runs March 2026 – September 2026 — 193 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 Bills become law this year? 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 Bills become law this year? historical data cost?

€1 per series-day bundle — every contract of the series for that day, with invoice on checkout. Buy it in the Data Shop.

How many Bills become law this year? contracts trade per day on Kalshi?

Topics

Topic hubs featuring this series

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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 —.

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.

2026-09-11 — 10 contracts, 60 trades, $229.36 turnover

The 10 most traded Bills become law this year? contracts on 2026-09-11 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 9 still open at the last print: 60 trades, $229.36 USD turnover. The busiest contract was KXBILLS-E15 with $69.9 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-E15	0.140	0.180	0.140	0.170	0.164	open	4	$69.9	100 %	buy file →
KXBILLS-AIO	0.490	0.510	0.270	0.290	0.297	open	8	$56.54	44 %	buy file →
KXBILLS-CHIP	0.350	0.350	0.330	0.330	0.330	open	4	$51.98	100 %	buy file →
KXBILLS-MIN	0.190	0.200	0.100	0.100	0.144	open	18	$19.49	35 %	buy file →
KXBILLS-FISA	0.069	0.089	0.069	0.088	0.085	open	9	$12.19	100 %	buy file →
KXBILLS-NIL	0.330	0.340	0.310	0.310	0.319	open	7	$9.3	34 %	buy file →
KXBILLS-DATA	0.170	0.170	0.160	0.160	0.160	open	1	$4.73	100 %	buy file →
KXBILLS-EVFEE	0.110	0.110	0.110	0.110	0.110	open	2	$2.97	0 %	buy file →
KXBILLS-HRCA	0.140	0.140	0.100	0.100	0.103	open	2	$1.65	0 %	buy file →
KXBILLS-DEFY	0.050	0.050	0.025	0.025	0.025	No	5	$0.61	0 %	buy file →

2026-09-10 — 10 contracts, 52 trades, $615.34 turnover

The 10 most traded Bills become law this year? contracts on 2026-09-10 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 10 still open at the last print: 52 trades, $615.34 USD turnover. The busiest contract was KXBILLS-NIL with $256.74 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-NIL	0.390	0.410	0.330	0.330	0.340	open	18	$256.74	0 %	buy file →
KXBILLS-E15	0.190	0.190	0.120	0.140	0.130	open	6	$203.54	0 %	buy file →
KXBILLS-HRCA	0.160	0.190	0.140	0.140	0.145	open	4	$77.46	0 %	buy file →
KXBILLS-DATA	0.070	0.170	0.070	0.170	0.166	open	7	$43.91	100 %	buy file →
KXBILLS-ADSB	0.300	0.300	0.300	0.300	0.300	open	1	$22.33	100 %	buy file →
KXBILLS-EVFEE	0.110	0.110	0.110	0.110	0.110	open	2	$3.96	0 %	buy file →
KXBILLS-CHIP	0.320	0.350	0.300	0.350	0.320	open	3	$2.69	36 %	buy file →
KXBILLS-FISA	0.069	0.069	0.069	0.069	0.069	open	1	$2.28	100 %	buy file →
KXBILLS-ROTOR	0.110	0.110	0.050	0.065	0.056	open	9	$2.08	49 %	buy file →
KXBILLS-SHOW	0.070	0.070	0.070	0.070	0.070	open	1	$0.35	100 %	buy file →

2026-09-09 — 5 contracts, 40 trades, $269.24 turnover

The 5 most traded Bills become law this year? contracts on 2026-09-09 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 5 still open at the last print: 40 trades, $269.24 USD turnover. The busiest contract was KXBILLS-AIO with $127.34 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-AIO	0.280	0.490	0.270	0.490	0.281	open	16	$127.34	100 %	buy file →
KXBILLS-CHIP	0.320	0.340	0.320	0.320	0.334	open	9	$65.03	100 %	buy file →
KXBILLS-26MAY-RAIL	0.040	0.180	0.040	0.180	0.179	open	2	$59.37	100 %	buy file →
KXBILLS-FISA	0.036	0.069	0.036	0.069	0.067	open	12	$17.14	100 %	buy file →
KXBILLS-DEFY	0.021	0.050	0.021	0.050	0.050	open	1	$0.36	100 %	buy file →

2026-09-08 — 3 contracts, 10 trades, $41.59 turnover

The 3 most traded Bills become law this year? contracts on 2026-09-08 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 3 still open at the last print: 10 trades, $41.59 USD turnover. The busiest contract was KXBILLS-AIO with $28.56 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-AIO	0.330	0.330	0.280	0.280	0.280	open	1	$28.56	100 %	buy file →
KXBILLS-NIL	0.530	0.530	0.370	0.390	0.404	open	5	$11.17	63 %	buy file →
KXBILLS-FISA	0.041	0.041	0.036	0.036	0.036	open	4	$1.86	0 %	buy file →

2026-09-07 — 10 contracts, 40 trades, $173.53 turnover

The 10 most traded Bills become law this year? contracts on 2026-09-07 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 10 still open at the last print: 40 trades, $173.53 USD turnover. The busiest contract was KXBILLS-26MAY-RAIL with $99.91 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-26MAY-RAIL	0.090	0.330	0.040	0.040	0.077	open	4	$99.91	74 %	buy file →
KXBILLS-NIL	0.340	0.530	0.340	0.530	0.403	open	8	$31.7	100 %	buy file →
KXBILLS-SURF	0.170	0.200	0.170	0.200	0.200	open	2	$9.46	100 %	buy file →
KXBILLS-E15	0.140	0.190	0.140	0.190	0.180	open	6	$9.45	100 %	buy file →
KXBILLS-JSEC	0.080	0.150	0.080	0.150	0.107	open	5	$9.41	100 %	buy file →
KXBILLS-250C	0.060	0.090	0.060	0.090	0.090	open	2	$9.4	100 %	buy file →
KXBILLS-FISA	0.041	0.041	0.041	0.041	0.041	open	5	$1.93	0 %	buy file →
KXBILLS-26-JAWB	0.020	0.090	0.020	0.090	0.083	open	3	$0.8	100 %	buy file →
KXBILLS-DATA	0.079	0.079	0.070	0.070	0.076	open	4	$0.76	0 %	buy file →
KXBILLS-BALL	0.050	0.050	0.050	0.050	0.050	open	1	$0.71	100 %	buy file →

2026-09-06 — 2 contracts, 23 trades, $83.29 turnover

The 2 most traded Bills become law this year? contracts on 2026-09-06 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 23 trades, $83.29 USD turnover. The busiest contract was KXBILLS-FISA with $44.42 turnover.

Contract	Open	High	Low	Close	VWAP	Implied outcome	Trades	Turnover	Buy share
KXBILLS-FISA	0.059	0.077	0.040	0.041	0.054	open	15	$44.42	96 %	buy file →
KXBILLS-NIL	0.350	0.360	0.340	0.340	0.346	open	8	$38.87	12 %	buy file →

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.

On average 6 Bills become law this year? contracts had at least one trade per UTC day over the last 30 captured days on Kalshi, with about 41.2K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.

How liquid are Kalshi Bills become law this year? contracts?

Over the last 30 captured days, the turnover-weighted quoted bid-ask spread was 4.56 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $109.2 per side, 44 % 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 Bills become law this year? contract on 2026-09-12?

KXBILLS-AIO — $208.28 USD turnover over 7 trades on Kalshi. The 10 most traded contracts of the series did 35 trades and $468.13 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.

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