Nasdaq · CMPX · stock
Compass Therapeutics, Inc. (CMPX) stock price history
Every Nasdaq trading session of Compass Therapeutics, Inc. from Apr 5, 2021 to Sep 28, 2026: 1,378 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.
CMPX adjusted close, 2021 to 2026
- $8.80
- All time high, 2021
- $6.88
- 52 week high, $1.10 low
- 1,378
- Daily sessions since 2021
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2021 to 2026 series and minute bars.
CMPX key facts
- Compass Therapeutics, Inc. (CMPX) closed at $1.11 on Sep 28, 2026 on Nasdaq.
- CMPX's all time high close is $8.80, set on Apr 16, 2021; its all time low close is $0.8000 on Jul 5, 2024.
- CMPX's 52 week range is $1.10 to $6.88.
- CMPX returned -70.3% over the year to Sep 28, 2026 and -68.3% over five years.
- Since Apr 5, 2021 CMPX returned -87%, -31.0% a year compounded.
- CMPX's deepest drawdown was -90.9% from Apr 16, 2021 to Jul 5, 2024.
- DataCedar holds 1,378 daily sessions of CMPX history from Apr 5, 2021 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
CMPX price chart, 2021 to 2026
CMPX returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -53.8% |
| 3 months | -46.6% |
| 6 months | -78.7% |
| Year to date | -79.4% |
| 1 year | -70.3% |
| 3 years | -44.2% |
| 5 years | -68.3% |
| 10 years | n/a |
| Since Apr 5, 2021 | -86.9% |
| Compound annual growth, 5.5 years | -31.0% |
CMPX records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $8.80 on Apr 16, 2021
- All time low close
- $0.8000 on Jul 5, 2024
- 52 week high
- $6.88 on Feb 3, 2026
- 52 week low
- $1.10 on Sep 24, 2026
- Deepest drawdown
- -90.9% from Apr 16, 2021 to Jul 5, 2024, not yet recovered
- Best single session
- +31.8% on Nov 2, 2021
- Worst single session
- -64.4% on Apr 27, 2026
- Volatility, 1 year annualised
- 126.5%
- Sessions closing higher, 1 year
- 50%
- Best calendar year
- 2025, +270%
- Worst calendar year
- 2023, -69%
CMPX 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. 2021 starts on Apr 5, 2021; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $5.36 | $6.88 | $1.10 | $1.11 | -79.3% | 844.7M | 185 |
| 2025 | $1.50 | $5.86 | $1.33 | $5.37 | +270.3% | 383.7M | 250 |
| 2024 | $1.56 | $2.34 | $0.7650 | $1.45 | -7.1% | 109.7M | 252 |
| 2023 | $5.09 | $5.55 | $1.35 | $1.56 | -69.0% | 101.1M | 250 |
| 2022 | $3.27 | $5.65 | $1.25 | $5.03 | +58.7% | 45.3M | 251 |
| 2021 | $8.50 | $11.00 | $2.01 | $3.17 | n/a | 13.5M | 190 |
CMPX monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $1.11 | -53.6% |
| August 2026 | $2.39 | +25.1% |
| July 2026 | $1.91 | -12.8% |
| June 2026 | $2.19 | -8.0% |
| May 2026 | $2.38 | +34.5% |
| April 2026 | $1.77 | -66.5% |
| March 2026 | $5.29 | -6.4% |
| February 2026 | $5.65 | -11.7% |
| January 2026 | $6.40 | +19.2% |
| December 2025 | $5.37 | -7.4% |
| November 2025 | $5.80 | +55.1% |
| October 2025 | $3.74 | +6.9% |
About the CMPX data
Daily bars. 1,378 sessions from Apr 5, 2021 to Sep 28, 2026, one row per Nasdaq 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 Nasdaq 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 Apr 5, 2021, 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/CMPX/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
CMPX share price history
