Cboe BZX · COSW · ETF
Roundhill COST WeeklyPay ETF (COSW) ETF price history
Every Cboe BZX trading session of Roundhill COST WeeklyPay ETF from Oct 23, 2025 to Sep 28, 2026: 233 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.
COSW adjusted close, 2025 to 2026
- $48.42
- All time high, 2026
- $48.44
- 52 week high, $35.78 low
- 233
- 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.
COSW key facts
- Roundhill COST WeeklyPay ETF (COSW) closed at $37.15 on Sep 28, 2026 on Cboe BZX.
- COSW's all time high close is $48.42, set on May 19, 2026; its all time low close is $35.94 on Sep 17, 2026.
- COSW's 52 week range is $35.78 to $48.44.
- COSW's deepest drawdown was -25.8% from May 19, 2026 to Sep 17, 2026.
- DataCedar holds 233 daily sessions of COSW history from Oct 23, 2025 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
COSW price chart, 2025 to 2026
COSW returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -4.7% |
| 3 months | -8.7% |
| 6 months | -13.4% |
| Year to date | +0.2% |
| 1 year | n/a |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Oct 23, 2025 | -10.0% |
COSW records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $48.42 on May 19, 2026
- All time low close
- $35.94 on Sep 17, 2026
- 52 week high
- $48.44 on May 19, 2026
- 52 week low
- $35.78 on Sep 17, 2026
- Deepest drawdown
- -25.8% from May 19, 2026 to Sep 17, 2026, not yet recovered
- Best single session
- +5.0% on Nov 21, 2025
- Worst single session
- -5.6% on Nov 24, 2025
- Volatility, 1 year annualised
- 25.0%
- Sessions closing higher, 1 year
- 46%
COSW 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 Oct 23, 2025; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $36.87 | $48.44 | $35.78 | $37.15 | +0.8% | 1.1M | 185 |
| 2025 | $41.18 | $41.66 | $36.11 | $36.86 | n/a | 913.3K | 48 |
COSW monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $37.15 | -4.0% |
| August 2026 | $38.69 | -3.3% |
| July 2026 | $40.03 | +0.3% |
| June 2026 | $39.89 | -3.1% |
| May 2026 | $41.17 | -7.2% |
| April 2026 | $44.38 | +2.7% |
| March 2026 | $43.20 | -2.6% |
| February 2026 | $44.37 | +8.8% |
| January 2026 | $40.79 | +10.6% |
| December 2025 | $36.86 | -7.2% |
| November 2025 | $39.74 | +0.0% |
| October 2025 | $39.73 | n/a |
About the COSW data
Daily bars. 233 sessions from Oct 23, 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 28, 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 Oct 23, 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/COSW/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Cboe BZX
Common questions
COSW share price history
