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 Sep 28, 2026: 393 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
- $100.04
- All time high, 2026
- $100.06
- 52 week high, $97.18 low
- 393
- Daily sessions since 2025
Last updated Sep 28, 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 $100.04 on Sep 28, 2026 on Cboe BZX.
- WEEK's all time high close is $100.04, set on Sep 25, 2026; its all time low close is $95.02 on Mar 6, 2025.
- WEEK's 52 week range is $97.18 to $100.06.
- WEEK returned +2.9% over the year to Sep 28, 2026.
- Since Mar 6, 2025 WEEK returned +5%, +3.4% a year compounded.
- WEEK's deepest drawdown was -0.1% from Oct 10, 2025 to Oct 13, 2025.
- DataCedar holds 393 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 Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +0.1% |
| 3 months | +0.2% |
| 6 months | +1.1% |
| Year to date | +1.9% |
| 1 year | +2.9% |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Mar 6, 2025 | +5.3% |
| Compound annual growth, 1.6 years | +3.4% |
WEEK records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $100.04 on Sep 25, 2026
- All time low close
- $95.02 on Mar 6, 2025
- 52 week high
- $100.06 on Sep 28, 2026
- 52 week low
- $97.18 on Sep 29, 2025
- Deepest drawdown
- -0.1% from Oct 10, 2025 to Oct 13, 2025, recovered Oct 17, 2025
- Best single session
- +0.1% on Oct 14, 2025
- Worst single session
- -0.1% on Oct 13, 2025
- Volatility, 1 year annualised
- 0.5%
- Sessions closing higher, 1 year
- 65%
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 Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $98.16 | $100.06 | $98.16 | $100.04 | +1.9% | 7M | 185 |
| 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 |
|---|---|---|
| September 2026 | $100.04 | +0.1% |
| 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% |
| November 2025 | $97.84 | +0.3% |
| October 2025 | $97.58 | +0.3% |
About the WEEK data
Daily bars. 393 sessions from Mar 6, 2025 to Sep 28, 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 Sep 25, 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/WEEK/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Cboe BZX
- WDNA WisdomTree BioRevolution Fund
- WDRN WisdomTree Physical AI, Humanoids and Drones Fund
- WEBX Corgi Chinese Internet 2x Daily ETF
- WEED Roundhill Cannabis ETF
- WLDR Simplify Affinity World Leaders Equity ETF
- WLDU Leverage Shares 2x Long World Stock Daily ETF
- WMTI REX WMT Growth & Income ETF
- WNDR Corgi Travel & Leisure ETF
Common questions
WEEK share price history
