Nasdaq · OMER · stock
Omeros Corp. (OMER) stock price history
Every Nasdaq trading session of Omeros Corp. from Oct 8, 2009 to Sep 28, 2026: 4,268 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.
OMER adjusted close, 2009 to 2026
- $26.69
- All time high, 2018
- $21.24
- 52 week high, $4.06 low
- 4,268
- Daily sessions since 2009
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2009 to 2026 series and minute bars.
OMER key facts
- Omeros Corp. (OMER) closed at $19.43 on Sep 28, 2026 on Nasdaq.
- OMER's all time high close is $26.69, set on Sep 4, 2018; its all time low close is $1.08 on Oct 27, 2023.
- OMER's 52 week range is $4.06 to $21.24.
- OMER returned +335.7% over the year to Sep 28, 2026 and +40.9% over five years.
- Over ten years OMER returned +69%, +5.4% a year compounded.
- OMER's deepest drawdown was -96.0% from Sep 4, 2018 to Oct 27, 2023.
- DataCedar holds 4,268 daily sessions of OMER history from Oct 8, 2009 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
OMER price chart, 2009 to 2026
OMER returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +4.4% |
| 3 months | +124.1% |
| 6 months | +96.7% |
| Year to date | +14.6% |
| 1 year | +335.7% |
| 3 years | +565.4% |
| 5 years | +40.9% |
| 10 years | +68.7% |
| Since Oct 8, 2009 | +122.6% |
| Compound annual growth, 17.0 years | +4.8% |
OMER records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $26.69 on Sep 4, 2018
- All time low close
- $1.08 on Oct 27, 2023
- 52 week high
- $21.24 on Sep 22, 2026
- 52 week low
- $4.06 on Oct 14, 2025
- Deepest drawdown
- -96.0% from Sep 4, 2018 to Oct 27, 2023, not yet recovered
- Best single session
- +154.1% on Oct 15, 2025
- Worst single session
- -42.8% on Oct 1, 2018
- Volatility, 1 year annualised
- 136.2%
- Sessions closing higher, 1 year
- 50%
- Growth of 1 since 2009
- 2.2×
- Best calendar year
- 2024, +202%
- Worst calendar year
- 2022, -65%
OMER 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. 2009 starts on Oct 8, 2009; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $17.50 | $21.24 | $6.70 | $19.43 | +13.1% | 313.4M | 185 |
| 2025 | $9.85 | $17.65 | $2.95 | $17.18 | +73.9% | 444M | 250 |
| 2024 | $3.22 | $13.60 | $2.61 | $9.88 | +202.1% | 140.6M | 252 |
| 2023 | $2.35 | $7.80 | $0.9200 | $3.27 | +44.7% | 180.3M | 250 |
| 2022 | $6.55 | $7.75 | $1.74 | $2.26 | -64.9% | 204.9M | 251 |
| 2021 | $14.30 | $23.85 | $5.45 | $6.43 | -55.0% | 216.6M | 252 |
| 2020 | $14.15 | $25.46 | $8.50 | $14.29 | +1.4% | 229.2M | 253 |
| 2019 | $10.97 | $20.92 | $10.88 | $14.09 | +26.5% | 125.3M | 252 |
| 2018 | $19.47 | $27.00 | $8.36 | $11.14 | -42.7% | 246.3M | 251 |
| 2017 | $10.04 | $27.09 | $8.71 | $19.43 | +95.9% | 196M | 251 |
| 2016 | $15.37 | $16.80 | $7.20 | $9.92 | -36.9% | 121.2M | 252 |
| 2015 | $25.09 | $30.23 | $10.48 | $15.73 | -36.5% | 181.9M | 252 |
| 2014 | $11.24 | $25.10 | $9.76 | $24.78 | +119.5% | 104M | 252 |
| 2013 | $5.49 | $13.76 | $3.65 | $11.29 | +117.5% | 134M | 252 |
| 2012 | $3.96 | $13.45 | $3.96 | $5.19 | +31.4% | 43M | 250 |
| 2011 | $8.30 | $8.54 | $3.16 | $3.95 | -52.1% | 19.5M | 252 |
| 2010 | $7.44 | $8.99 | $5.02 | $8.24 | +17.4% | 14.2M | 252 |
| 2009 | $8.80 | $9.49 | $5.27 | $7.02 | n/a | 7.6M | 59 |
OMER monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $19.43 | +3.4% |
| August 2026 | $18.79 | +58.7% |
| July 2026 | $11.84 | +24.5% |
| June 2026 | $9.51 | -13.9% |
| May 2026 | $11.04 | -24.4% |
| April 2026 | $14.60 | +38.3% |
| March 2026 | $10.56 | -12.4% |
| February 2026 | $12.05 | +3.1% |
| January 2026 | $11.69 | -32.0% |
| December 2025 | $17.18 | +77.3% |
| November 2025 | $9.69 | +32.2% |
| October 2025 | $7.33 | +78.8% |
About the OMER data
Daily bars. 4,268 sessions from Oct 8, 2009 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 Oct 8, 2009, 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/OMER/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
OMER share price history
