Cboe BZX · WEEK · ETF
Roundhill Weekly T-Bill ETF (WEEK) ETF price history
Every Cboe BZX trading session of Roundhill Weekly T-Bill ETF from Mar 6, 2025 to Nov 12, 2026: 426 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
WEEK adjusted close, 2025 to 2026
- $100.03
- All time high, 2026
- $100.03
- 52 week high, $97.68 low
- 426
- Daily sessions since 2025
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2025 to 2026 series and minute bars.
WEEK key facts
- Roundhill Weekly T-Bill ETF (WEEK) closed at $100.00 on Nov 12, 2026 on Cboe BZX.
- WEEK's all time high close is $100.03, set on Oct 21, 2026; its all time low close is $95.02 on Mar 6, 2025.
- WEEK's 52 week range is $97.68 to $100.03.
- WEEK returned +2.3% over the year to Nov 12, 2026.
- Since Mar 6, 2025 WEEK returned +5%, +3.1% a year compounded.
- WEEK's deepest drawdown was -0.1% from Oct 21, 2026 to Oct 22, 2026.
- DataCedar holds 426 daily sessions of WEEK history from Mar 6, 2025 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
WEEK price chart, 2025 to 2026
WEEK returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +0.1% |
| 3 months | +0.0% |
| 6 months | +0.6% |
| Year to date | +1.8% |
| 1 year | +2.3% |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Mar 6, 2025 | +5.2% |
| Compound annual growth, 1.7 years | +3.1% |
WEEK records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $100.03 on Oct 21, 2026
- All time low close
- $95.02 on Mar 6, 2025
- 52 week high
- $100.03 on Oct 21, 2026
- 52 week low
- $97.68 on Nov 12, 2025
- Deepest drawdown
- -0.1% from Oct 21, 2026 to Oct 22, 2026, not yet recovered
- Best single session
- +0.1% on Oct 14, 2025
- Worst single session
- -0.1% on Oct 22, 2026
- Volatility, 1 year annualised
- 0.5%
- Sessions closing higher, 1 year
- 66%
WEEK price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2025 starts on Mar 6, 2025; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $98.16 | $100.03 | $98.16 | $100.00 | +1.8% | 8.3M | 218 |
| 2025 | $95.01 | $98.25 | $93.30 | $98.22 | n/a | 5.2M | 208 |
WEEK monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | $100.00 | +0.0% |
| October 2026 | $99.96 | +0.0% |
| September 2026 | $99.93 | +0.0% |
| August 2026 | $99.91 | -0.1% |
| July 2026 | $100.01 | +0.1% |
| June 2026 | $99.89 | +0.3% |
| May 2026 | $99.57 | +0.3% |
| April 2026 | $99.30 | +0.3% |
| March 2026 | $99.04 | +0.3% |
| February 2026 | $98.71 | +0.3% |
| January 2026 | $98.45 | +0.2% |
| December 2025 | $98.22 | +0.4% |
About the WEEK data
Daily bars. 426 sessions from Mar 6, 2025 to Nov 12, 2026, one row per Cboe BZX trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Oct 23, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Cboe BZX trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Mar 6, 2025, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/cboe-bzx%3AWEEK/bars?timeframe=1Day&adjustment=all&limit=50000" \
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Common questions
WEEK share price history
