Nasdaq · ERII · stock
Energy Recovery, Inc. (ERII) stock price history
Every Nasdaq trading session of Energy Recovery, Inc. from Jul 2, 2008 to Sep 29, 2026: 4,589 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.
ERII adjusted close, 2008 to 2026
- $30.61
- All time high, 2023
- $18.32
- 52 week high, $6.60 low
- 4,589
- Daily sessions since 2008
Last updated Sep 29, 2026, the last stored session. Refreshes after each trading day. Full 2008 to 2026 series and minute bars.
ERII key facts
- Energy Recovery, Inc. (ERII) closed at $6.75 on Sep 29, 2026 on Nasdaq.
- ERII's all time high close is $30.61, set on Jul 18, 2023; its all time low close is $1.97 on Apr 12, 2012.
- ERII's 52 week range is $6.60 to $18.32.
- ERII returned -56.0% over the year to Sep 29, 2026 and -64.9% over five years.
- Over ten years ERII returned -58%, -8.3% a year compounded.
- ERII's deepest drawdown was -84.0% from Jul 21, 2008 to Apr 12, 2012.
- DataCedar holds 4,589 daily sessions of ERII history from Jul 2, 2008 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
ERII price chart, 2008 to 2026
ERII returns
Price return from the last close on or before the window start to Sep 29, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -13.1% |
| 3 months | -23.4% |
| 6 months | -31.6% |
| Year to date | -49.9% |
| 1 year | -56.0% |
| 3 years | -68.2% |
| 5 years | -64.9% |
| 10 years | -57.8% |
| Since Jul 2, 2008 | -31.3% |
| Compound annual growth, 18.2 years | -2.0% |
ERII records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $30.61 on Jul 18, 2023
- All time low close
- $1.97 on Apr 12, 2012
- 52 week high
- $18.32 on Oct 27, 2025
- 52 week low
- $6.60 on Sep 28, 2026
- Deepest drawdown
- -84.0% from Jul 21, 2008 to Apr 12, 2012, recovered Apr 20, 2016
- Best single session
- +197.6% on Oct 20, 2015
- Worst single session
- -35.3% on Feb 26, 2026
- Volatility, 1 year annualised
- 63.5%
- Sessions closing higher, 1 year
- 48%
- Best calendar year
- 2013, +63%
- Worst calendar year
- 2010, -47%
ERII 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. 2008 starts on Jul 2, 2008; 2026 runs to Sep 29, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $13.60 | $16.30 | $6.60 | $6.75 | -50.0% | 166.8M | 186 |
| 2025 | $14.91 | $18.32 | $10.86 | $13.49 | -8.2% | 111.6M | 250 |
| 2024 | $18.50 | $20.27 | $12.26 | $14.70 | -22.0% | 109.1M | 252 |
| 2023 | $20.67 | $30.76 | $14.04 | $18.84 | -8.1% | 101.9M | 250 |
| 2022 | $21.52 | $26.34 | $16.92 | $20.49 | -4.7% | 99.2M | 251 |
| 2021 | $14.31 | $24.99 | $13.45 | $21.49 | +57.6% | 102.7M | 252 |
| 2020 | $9.83 | $13.98 | $6.11 | $13.64 | +39.3% | 61.3M | 253 |
| 2019 | $6.60 | $12.04 | $6.56 | $9.79 | +45.5% | 54M | 252 |
| 2018 | $8.72 | $10.25 | $6.17 | $6.73 | -23.1% | 83.7M | 251 |
| 2017 | $10.54 | $11.46 | $6.13 | $8.75 | -15.5% | 108.2M | 251 |
| 2016 | $6.80 | $16.67 | $5.28 | $10.35 | +46.4% | 147.6M | 252 |
| 2015 | $5.34 | $9.50 | $2.07 | $7.07 | +34.2% | 118.7M | 252 |
| 2014 | $5.54 | $6.98 | $3.30 | $5.27 | -5.0% | 95.9M | 252 |
| 2013 | $3.41 | $7.75 | $3.24 | $5.55 | +63.2% | 76.2M | 252 |
| 2012 | $2.65 | $3.69 | $1.95 | $3.40 | +31.8% | 49.4M | 250 |
| 2011 | $3.71 | $4.36 | $2.09 | $2.58 | -29.5% | 76.8M | 252 |
| 2010 | $6.89 | $7.25 | $3.08 | $3.66 | -46.8% | 88.9M | 252 |
| 2009 | $7.56 | $8.79 | $4.50 | $6.88 | -9.2% | 80.3M | 252 |
| 2008 | $11.00 | $13.25 | $4.57 | $7.58 | n/a | 48.1M | 127 |
ERII monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $6.75 | -12.5% |
| August 2026 | $7.71 | -10.9% |
| July 2026 | $8.65 | -4.1% |
| June 2026 | $9.02 | +10.4% |
| May 2026 | $8.17 | -26.2% |
| April 2026 | $11.07 | +9.9% |
| March 2026 | $10.07 | -3.5% |
| February 2026 | $10.43 | -28.5% |
| January 2026 | $14.59 | +8.2% |
| December 2025 | $13.49 | -6.6% |
| November 2025 | $14.45 | -15.5% |
| October 2025 | $17.11 | +11.0% |
About the ERII data
Daily bars. 4,589 sessions from Jul 2, 2008 to Sep 29, 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 Jul 2, 2008, 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/ERII/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
ERII share price history
