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Kalshi · Economics · monthly · KXCPINDEX

Kalshi CPI-U index in [month] Historical Data

Every Kalshi “CPI-U index in [month]” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 125 trading days as day bundles, €1 per day, bought as a guest with instant download.

Trading days
125
Coverage
July 2026 – present
Archive size
121 MB
Price per day
€1
Activity & identifier

CPI-U index in [month] on Kalshi — activity

Trades and USD turnover summed over every contract of the series across 29 captured days to 2026-11-10, 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
KXCPINDEX
Avg trades / day
42
Avg turnover / day
$776.3
Captured days
29
Trades (30d)
1,213
Turnover (30d)
$22.5K
Contracts traded / day
5
Buy share
81 %
Avg spread
28.1 ¢
Top-1 depth
$567.95
L2 updates / day
68.3K
L2 updates / trade
1632.1
30d vs prior 30d
+787.4 %
Since 2026-09-22
1.3K trades · $24.3K
Record day
$10.7K · 2026-10-16
Files on latest day
35
What's in a bundle

One purchase, the whole series for a day

A series-day bundle contains every CPI-U index in [month] contract that was listed on Kalshi on that UTC day — traded or not — 35 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 July 2026 – present — 125 trading days, 121 MB compressed in total. A day typically holds 27 contract files (up to 48 on the busiest day, 14.2 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.

Month by month

CPI-U index in [month] — development since capture

1,274 trades and $24.3K of USD turnover over 50 captured days since 2026-09-22 — record day 2026-10-16 with $10.7K, biggest single contract KXCPINDEX-26NOV10-T336.300 (CPINDEX · 2026-11-10 · strike · ABOVE 336.3) (2026-10-16, $3.0K).

MonthDaysTradesTurnover (USD)Avg / dayContracts tradedL2 updatesvs previous month
Nov 2026 (month to date)1073$992.65$99.2735136.1K—
Oct 2026311,185$22.5K$724.571202.0M+2408.5 %
Sep 2026916$895.41$99.49623.4K—

Kalshi CPI-U index in [month] — 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.

When it trades

CPI-U index in [month] — activity by weekday

Fridays carry the most turnover, about $2.8K per day.

Weekday (UTC)Avg turnover / dayUSDAvg tradesDays
Monday$1.1K1314
Tuesday$635.1763.65
Wednesday$70.2584
Thursday$46.443.254
Friday$2.8K284
Saturday$361.2714.754
Sunday$498.0538.754

Kalshi CPI-U index in [month] — 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 —.

Daily statistics

CPI-U index in [month] — 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 dayFilesSizeTradedTradesTurnoverBuy shareAvg spreadTop-1 depthL2 updatesNotes
2026-11-1035153 KB11$0.090 %35.0 ¢$4.483.2KBuy day →
2026-11-0935285 KB1231$558.0877 %19.0 ¢$100.677.0KBuy day →
2026-11-0835113 KB45$36.2939 %7.39 ¢$56.991.6KBuy day →
2026-11-073577.9 KB12$1.44100 %6.00 ¢$24.87695Buy day →
2026-11-0635301 KB79$61.7894 %3.17 ¢$70.558.3KBuy day →
2026-11-0535897 KB512$184.830 %29.3 ¢$1.2K29.4KBuy day →
2026-11-0435860 KB00$0———26.6KBuy day →
2026-11-03351.51 MB412$149.2866 %18.9 ¢$36.7954.1KBuy day →
2026-11-0235142 KB00$0———2.5KBuy day →
2026-11-0135157 KB11$0.860 %10.6 ¢$11.472.7KBuy day →
2026-10-31351.33 MB00$0———47.6KBuy day →
2026-10-30353.78 MB720$144.7554 %34.4 ¢$40.9144.5KBuy day →
2026-10-2935945 KB11$0.950 %4.00 ¢$62.7334.8KBuy day →
2026-10-28356.08 MB821$130.154 %36.9 ¢$54.34247.9KBuy day →
2026-10-273514.2 MB16292$2.2K69 %46.2 ¢$7.91577.1KBuy day →
2026-10-26357.95 MB16493$3.9K70 %53.4 ¢$29.2314.9KBuy day →
2026-10-25352.97 MB15142$1.8K79 %51.9 ¢$219.12113.2KBuy day →
2026-10-243589.1 KB751$1.1K34 %4.67 ¢$278.151.6KBuy day →
2026-10-233553.3 KB66$64.550 %57.6 ¢$105.16181Buy day →
2026-10-2235170 KB00$0———5.1KBuy day →
2026-10-2135507 KB00$0———17.7KBuy day →
2026-10-2035588 KB00$0———21.6KBuy day →
2026-10-19351.85 MB00$0———72.0KBuy day →
2026-10-18352.99 MB17$204.67100 %2.67 ¢$510.61115.8KBuy day →
2026-10-1735490 KB26$332.42100 %7.50 ¢$61.0312.6KBuy day →
2026-10-16352.03 MB1377$10.7K94 %16.5 ¢$1.1K69.3KBuy day →
2026-10-1525395 KB00$0———13.0KBuy day →
2026-10-1433767 KB311$150.891 %34.3 ¢$22.7727.4KBuy day →
2026-10-1333276 KB413$867.83100 %13.8 ¢$99.377.3KBuy day →
2026-10-1233307 KB00$0———6.3KBuy 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 —.

Contracts

Most traded CPI-U index in [month] 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 1 most traded CPI-U index in [month] contracts on 2026-11-10 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 1 trades, $0.09 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T337.300 with $0.09 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T337.300 CPINDEX · 2026-11-10 · strike · ABOVE 337.32026-11-10 13:310.3900.3900.0300.0300.030No1$0.090 %35.0 ¢$4.481.6Kbuy 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; spread = the contract's turnover-weighted quoted bid-ask spread in cents, top-1 depth = mean best-bid/ask notional per side, L2 updates = order-book level updates recorded for the contract that day. “Settles” is the venue-listed close time of the contract where the venue publishes one (UTC).

2026-11-09 — 10 contracts, 28 trades, $557.97 turnover

The 10 most traded CPI-U index in [month] contracts on 2026-11-09 — 4 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 6 still open at the last print: 28 trades, $557.97 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T335.500 with $198 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T335.500 CPINDEX · 2026-11-10 · strike · ABOVE 335.52026-11-10 13:310.8800.9900.8800.9900.990Yes1$198100 %11.0 ¢$124.14164buy file →
KXCPINDEX-26NOV10-T336.000 CPINDEX · 2026-11-10 · strike · ABOVE 3362026-11-10 13:310.7500.9900.7500.9900.990Yes1$198100 %27.1 ¢$124.01328buy file →
KXCPINDEX-26NOV10-T337.200 CPINDEX · 2026-11-10 · strike · ABOVE 337.22026-11-10 13:310.5700.5700.1300.1300.486open4$69.530 %22.3 ¢$52.74453buy file →
KXCPINDEX-26NOV10-T336.600 CPINDEX · 2026-11-10 · strike · ABOVE 336.62026-11-10 13:310.9600.9900.9600.9900.990Yes5$34.65100 %25.1 ¢$40.46526buy file →
KXCPINDEX-26NOV10-T336.900 CPINDEX · 2026-11-10 · strike · ABOVE 336.92026-11-10 13:310.8600.9000.0400.0400.225open12$28.770 %7.81 ¢$16.02316buy file →
KXCPINDEX-26NOV10-T337.500 CPINDEX · 2026-11-10 · strike · ABOVE 337.52026-11-10 13:310.2200.2200.1900.1900.190open1$17.10 %10.00 ¢$59.61242buy file →
KXCPINDEX-26NOV10-T337.000 CPINDEX · 2026-11-10 · strike · ABOVE 3372026-11-10 13:310.7600.7600.7300.7300.730open1$5.110 %34.4 ¢$40.22342buy file →
KXCPINDEX-26NOV10-T337.300 CPINDEX · 2026-11-10 · strike · ABOVE 337.32026-11-10 13:310.4800.4800.3900.3900.390open1$4.560 %7.48 ¢$19.58130buy file →
KXCPINDEX-26NOV10-T335.100 CPINDEX · 2026-11-10 · strike · ABOVE 335.12026-11-10 13:310.9700.9700.9700.9700.970Yes1$1.940 %——223buy file →
KXCPINDEX-26NOV10-T337.400 CPINDEX · 2026-11-10 · strike · ABOVE 337.42026-11-10 13:310.3200.3200.3100.3100.310open1$0.31100 %1.98 ¢$9.92998buy file →
2026-11-08 — 4 contracts, 5 trades, $36.29 turnover

The 4 most traded CPI-U index in [month] contracts on 2026-11-08 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 4 still open at the last print: 5 trades, $36.29 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T337.500 with $22.23 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T337.500 CPINDEX · 2026-11-10 · strike · ABOVE 337.52026-11-10 13:310.2200.2300.2200.2200.220open2$22.230 %7.41 ¢$68.8331buy file →
KXCPINDEX-26NOV10-T337.200 CPINDEX · 2026-11-10 · strike · ABOVE 337.22026-11-10 13:310.3800.5700.3800.5700.570open1$11.4100 %7.97 ¢$35.8765buy file →
KXCPINDEX-26NOV10-T336.600 CPINDEX · 2026-11-10 · strike · ABOVE 336.62026-11-10 13:310.8500.9600.8500.9600.960open1$1.92100 %3.41 ¢$53.3996buy file →
KXCPINDEX-26NOV10-T337.100 CPINDEX · 2026-11-10 · strike · ABOVE 337.12026-11-10 13:310.4900.7400.4900.7400.740open1$0.74100 %7.95 ¢$36.0648buy file →
2026-11-07 — 1 contract, 2 trades, $1.44 turnover

The 1 most traded CPI-U index in [month] contracts on 2026-11-07 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 2 trades, $1.44 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T337.300 with $1.44 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T337.300 CPINDEX · 2026-11-10 · strike · ABOVE 337.32026-11-10 13:310.4800.4800.4800.4800.480open2$1.44100 %6.00 ¢$24.8727buy file →
2026-11-06 — 7 contracts, 9 trades, $61.78 turnover

The 7 most traded CPI-U index in [month] contracts on 2026-11-06 — 1 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 6 still open at the last print: 9 trades, $61.78 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T335.300 with $39.6 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T335.300 CPINDEX · 2026-11-10 · strike · ABOVE 335.32026-11-10 13:310.9900.9900.9900.9900.990Yes1$39.6100 %2.74 ¢$83.3468buy file →
KXCPINDEX-26NOV10-T337.000 CPINDEX · 2026-11-10 · strike · ABOVE 3372026-11-10 13:310.5000.7600.5000.7600.760open3$15.96100 %3.24 ¢$52.75144buy file →
KXCPINDEX-26NOV10-T337.400 CPINDEX · 2026-11-10 · strike · ABOVE 337.42026-11-10 13:310.3300.3300.3200.3200.320open1$1.920 %5.72 ¢$17.625.8Kbuy file →
KXCPINDEX-26NOV10-T336.900 CPINDEX · 2026-11-10 · strike · ABOVE 336.92026-11-10 13:310.8500.8600.8500.8600.860open1$1.72100 %2.64 ¢$31.2107buy file →
KXCPINDEX-26NOV10-T337.500 CPINDEX · 2026-11-10 · strike · ABOVE 337.52026-11-10 13:310.2600.2600.2200.2200.220open1$1.10 %7.72 ¢$88.91102buy file →
KXCPINDEX-26NOV10-T337.300 CPINDEX · 2026-11-10 · strike · ABOVE 337.32026-11-10 13:310.4600.4800.4600.4800.480open1$0.96100 %6.84 ¢$24.65109buy file →
KXCPINDEX-26NOV10-T337.600 CPINDEX · 2026-11-10 · strike · ABOVE 337.62026-11-10 13:310.2300.2300.1300.1300.130open1$0.520 %9.18 ¢$14.6884buy file →
2026-11-05 — 5 contracts, 12 trades, $184.83 turnover

The 5 most traded CPI-U index in [month] contracts on 2026-11-05 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 5 still open at the last print: 12 trades, $184.83 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T337.300 with $79.13 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T337.300 CPINDEX · 2026-11-10 · strike · ABOVE 337.32026-11-10 13:310.0800.4600.0800.4600.342open4$79.130 %35.3 ¢$1.4K104buy file →
KXCPINDEX-26NOV10-T337.200 CPINDEX · 2026-11-10 · strike · ABOVE 337.22026-11-10 13:310.4500.4500.3800.3800.383open3$60.50 %31.6 ¢$1.8K87buy file →
KXCPINDEX-26NOV10-T337.400 CPINDEX · 2026-11-10 · strike · ABOVE 337.42026-11-10 13:310.2400.3300.1200.3300.216open3$44.410 %15.7 ¢$36.92.8Kbuy file →
KXCPINDEX-26NOV10-T337.600 CPINDEX · 2026-11-10 · strike · ABOVE 337.62026-11-10 13:310.2300.2300.2300.2300.230open1$0.460 %20.9 ¢$763.51329buy file →
KXCPINDEX-26NOV10-T336.600 CPINDEX · 2026-11-10 · strike · ABOVE 336.62026-11-10 13:310.8600.8600.8500.8500.850open1$0.330 %9.69 ¢$22.852buy file →
2026-11-03 — 4 contracts, 12 trades, $149.28 turnover

The 4 most traded CPI-U index in [month] contracts on 2026-11-03 — 3 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 12 trades, $149.28 USD turnover. The busiest contract was KXCPINDEX-26NOV10-T335.300 with $59.4 turnover.

ContractSettles (UTC)OpenHighLowCloseVWAPImplied outcomeTradesTurnoverBuy shareSpreadTop-1 depthL2 updates
KXCPINDEX-26NOV10-T335.300 CPINDEX · 2026-11-10 · strike · ABOVE 335.32026-11-10 13:310.9500.9900.9500.9900.990Yes3$59.4100 %4.00 ¢$48.3951buy file →
KXCPINDEX-26NOV10-T337.000 CPINDEX · 2026-11-10 · strike · ABOVE 3372026-11-10 13:310.4700.5100.4700.5000.503open7$50.280 %34.6 ¢$16.383.7Kbuy file →
KXCPINDEX-26NOV10-T335.600 CPINDEX · 2026-11-10 · strike · ABOVE 335.62026-11-10 13:310.8800.9900.8800.9900.990Yes1$19.8100 %21.8 ¢$53.113.6Kbuy file →
KXCPINDEX-26NOV10-T336.200 CPINDEX · 2026-11-10 · strike · ABOVE 336.22026-11-10 13:310.8800.9900.8800.9900.990Yes1$19.8100 %20.5 ¢$37.57.6Kbuy file →
Contract anatomy

How a CPI-U index in [month] contract trades

Trading window
25 days
Listed ahead
29 min
Tick size
0.01
Contracts measured
1
Quoted in
USD

On Kalshi, a CPI-U index in [month] contract trades for about 25 days from open to close, is listed roughly 29 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 1 contracts captured on 2026-11-10.

Free sample

Try a CPI-U index in [month] 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.

KXCPINDEX-26NOV10-T337.3002026-11-05 (UTC) · 6.56 KB · 4 trades · $79.13 turnover · 0.080 → 0.460Full 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

KXCPINDEX-26NOV10-T337.300 minute by minute — 2026-11-05

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.

KXCPINDEX-26NOV10-T337.300 traded in 3 of the day’s minutes (18:16–20:18 UTC): 4 trades, $79.13 turnover, opening at 0.080, ranging 0.250–0.460 and closing at 0.460.

0.00.51.018:16 UTC20:18 UTC
Minute (UTC)OpenHighLowCloseTradesTurnoverSpreadTop-1 bid / ask
18:160.0800.2600.2600.2601$0.1123.2 ¢$5.11 / $55.13
19:310.2600.2600.2500.2502$33.0223.8 ¢$3.9K / $0.2
20:180.2500.4600.4600.4601$465.08 ¢$45.95 / $0.2

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.

Build a bot

Build a CPI-U index in [month] model on this data

Every CPI-U index in [month] event lists a ladder of strikes — one contract per range — and the rung that settles in the money is the label, so the ladder's prices read as an implied distribution rather than one probability. The day bundle holds the full order-book path and trade tape of every rung, nanosecond-stamped; the statistics on this page cover the most traded contracts per day; the bundle holds every contract listed on Kalshi that day.

Contract-days traded since 2026-09-22
161

Split by release or event day, never at random — every rung of one ladder settles on the same print, so the whole ladder is one example; walk forward over releases. The ladder guide works distribution labels, cross-strike features and the link to the crypto strike grids through.

Purchased data is for your own use — backtesting, research, analytics and training your own models, in-house or in your own products; the trained models and derived data you build from it are yours. The raw files and tick streams themselves may not be redistributed, resold or published. The full terms are on the data license page.

Why CryptoStruct

Why buy Kalshi CPI-U index in [month] 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 free full-day samples from the major venues let you test 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

FAQ

Kalshi CPI-U index in [month] data — FAQ

What Kalshi CPI-U index in [month] data can I download?

Tick-by-tick trades and Level-2 order-book depth for every contract of the CPI-U index in [month] series on Kalshi (35 contract files on the latest day). One bundle = one UTC day of the whole series.

What is the Kalshi series ticker for CPI-U index in [month]?

KXCPINDEX — 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 KXCPINDEX-* contract listed that UTC day.

How far back does the CPI-U index in [month] data go?

Coverage runs July 2026 – present — 125 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 CPI-U index in [month] 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 CPI-U index in [month] 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 CPI-U index in [month] 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 CPI-U index in [month] 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 CPI-U index in [month] contracts trade per day on Kalshi?

On average 5 CPI-U index in [month] contracts had at least one trade per UTC day over the last 29 captured days on Kalshi, with about 68.3K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.

How liquid are Kalshi CPI-U index in [month] contracts?

Over the last 29 captured days, the turnover-weighted quoted bid-ask spread was 28.1 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $567.95 per side, 81 % 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 CPI-U index in [month] contract on 2026-11-10?

KXCPINDEX-26NOV10-T337.300 (CPINDEX · 2026-11-10 · strike · ABOVE 337.3) — $0.09 USD turnover over 1 trade on Kalshi. The 1 most traded contracts of the series did 1 trades and $0.09 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 CPI-U index in [month] trading day on Kalshi?

2026-10-16, with $10.7K of USD turnover over 77 trades across every CPI-U index in [month] contract of the day; the busiest full month was Oct 2026 at $22.5K. Since our statistics began on 2026-09-22 the series has recorded 1,274 trades and $24.3K over 50 captured days; the single biggest contract was KXCPINDEX-26NOV10-T336.300 (CPINDEX · 2026-11-10 · strike · ABOVE 336.3) on 2026-10-16 with $3.0K. Any of these days is a downloadable bundle.

Which weekday does Kalshi CPI-U index in [month] trade most?

Fridays — about $2.8K of USD turnover per Friday and 49 % of the series' turnover over the 29 captured days to 2026-11-10 on Kalshi, summed from every trade print of the series' contracts. The weekday profile on this page shows all seven days; the day bundles carry the full tape behind them.

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