Energy Recovery, Inc. (ERII) Stock Price History
Historical prices from 2008 to 2026
- 1M
- +1.0%
- 3M
- -18.1%
- YTD
- -47.9%
- 1Y
- -50.7%
- 3Y
- -26.6%
- 5Y
- -20.4%
Loading 10-year price history...
ERII Historical Performance
ERII Annual Returns
Year-by-year price performance · 2008–2026
- 2008 annual price return
- -22.9%
- 2009 annual price return
- -13.5%
- 2010 annual price return
- -49.2%
- 2011 annual price return
- -37.8%
- 2012 annual price return
- +29.3%
- 2013 annual price return
- +62.3%
- 2014 annual price return
- -1.9%
- 2015 annual price return
- +35.7%
- 2016 annual price return
- +50.0%
- 2017 annual price return
- -18.8%
- 2018 annual price return
- -24.6%
- 2019 annual price return
- +42.5%
- 2020 annual price return
- +40.0%
- 2021 annual price return
- +56.3%
- 2022 annual price return
- -4.7%
- 2023 annual price return
- -8.6%
- 2024 annual price return
- -22.1%
- 2025 annual price return
- -9.4%
- 2026 annual price return
- -50.1%
ERII Stock Price Trajectory (2008–2026)
As of November 8, 2026, Energy Recovery, Inc. (ERII) trades at $7.15, representing a -50.7% return over the past year. The stock has delivered a -68.1% total return over five years (-20.4% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $30.76 on July 19, 2023. From this peak, ERII has corrected -76.8%, currently trading 24% below its 200-day moving average, suggesting potential weakness.
When compared to Industrials sector peers FELE (-1.0% 1Y), PUMP (-40.6% 1Y), and HLIO (-15.3% 1Y), ERII has underperformed the peer group average. Compare ERII vs FELE →
ERII Historical Price Data · from 2008
Rows 1–50 of 4,617| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-11-06 | 6.80 | 7.20 | 6.77 | 7.15 | 1.26M | +6.56% |
| 2026-11-05 | 6.53 | 7.21 | 6.25 | 6.71 | 1.96M | -6.42% |
| 2026-11-04 | 7.28 | 7.33 | 6.99 | 7.17 | 1.14M | 0.00% |
| 2026-11-03 | 7.23 | 7.23 | 7.08 | 7.17 | 726K | -0.14% |
| 2026-11-02 | 7.04 | 7.30 | 7.02 | 7.18 | 1.14M | +3.16% |
| 2026-10-30 | 7.06 | 7.09 | 6.92 | 6.96 | 1.25M | -2.25% |
| 2026-10-29 | 6.95 | 7.12 | 6.94 | 7.12 | 704K | +2.45% |
| 2026-10-28 | 6.89 | 6.95 | 6.78 | 6.95 | 651K | +1.31% |
| 2026-10-27 | 6.81 | 6.92 | 6.76 | 6.86 | 989K | +1.03% |
| 2026-10-26 | 6.68 | 6.82 | 6.61 | 6.79 | 772K | +1.65% |
| 2026-10-23 | 6.62 | 6.83 | 6.55 | 6.68 | 733K | +0.15% |
| 2026-10-22 | 6.60 | 6.74 | 6.56 | 6.67 | 913K | +0.30% |
| 2026-10-21 | 6.72 | 6.76 | 6.60 | 6.65 | 616K | +0.15% |
| 2026-10-20 | 6.65 | 6.79 | 6.60 | 6.64 | 773K | -0.30% |
| 2026-10-19 | 6.70 | 6.72 | 6.58 | 6.66 | 572K | +0.15% |
| 2026-10-16 | 6.66 | 6.81 | 6.62 | 6.65 | 888K | +0.15% |
| 2026-10-15 | 6.74 | 6.78 | 6.64 | 6.64 | 585K | -1.04% |
| 2026-10-14 | 6.75 | 6.80 | 6.64 | 6.71 | 655K | -2.04% |
| 2026-10-13 | 6.85 | 6.89 | 6.67 | 6.85 | 722K | -0.29% |
| 2026-10-12 | 6.84 | 6.93 | 6.80 | 6.87 | 476K | +0.44% |
| 2026-10-09 | 6.84 | 6.88 | 6.73 | 6.84 | 462K | 0.00% |
| 2026-10-08 | 6.76 | 6.92 | 6.69 | 6.84 | 1.15M | +1.63% |
| 2026-10-07 | 6.94 | 6.95 | 6.63 | 6.73 | 689K | -4.94% |
| 2026-10-06 | 6.90 | 7.15 | 6.87 | 7.08 | 1.39M | +3.66% |
| 2026-10-05 | 6.75 | 6.84 | 6.63 | 6.83 | 872K | +0.89% |
| 2026-10-02 | 6.81 | 6.83 | 6.71 | 6.77 | 618K | +1.04% |
| 2026-10-01 | 6.68 | 6.77 | 6.60 | 6.70 | 726K | +0.45% |
| 2026-09-30 | 6.75 | 6.78 | 6.66 | 6.67 | 825K | -1.19% |
| 2026-09-29 | 6.75 | 6.82 | 6.70 | 6.75 | 690K | +0.45% |
| 2026-09-28 | 6.78 | 6.79 | 6.60 | 6.72 | 931K | -1.32% |
| 2026-09-25 | 6.83 | 6.90 | 6.77 | 6.81 | 682K | -0.29% |
| 2026-09-24 | 6.76 | 6.84 | 6.69 | 6.83 | 801K | +0.44% |
| 2026-09-23 | 7.06 | 7.06 | 6.78 | 6.80 | 778K | -4.49% |
| 2026-09-22 | 7.06 | 7.14 | 6.95 | 7.12 | 754K | +1.28% |
| 2026-09-21 | 7.00 | 7.07 | 6.91 | 7.03 | 986K | +0.57% |
| 2026-09-18 | 6.97 | 7.06 | 6.89 | 6.99 | 1.95M | -0.85% |
| 2026-09-17 | 7.19 | 7.20 | 6.96 | 7.05 | 656K | -0.70% |
| 2026-09-16 | 7.08 | 7.33 | 7.05 | 7.10 | 913K | +0.57% |
| 2026-09-15 | 7.11 | 7.12 | 6.90 | 7.06 | 1.29M | -0.42% |
| 2026-09-14 | 7.18 | 7.27 | 6.93 | 7.09 | 2.02M | -6.09% |
| 2026-09-11 | 7.39 | 7.59 | 7.33 | 7.55 | 929K | +3.85% |
| 2026-09-10 | 7.35 | 7.42 | 7.25 | 7.27 | 811K | -1.49% |
| 2026-09-09 | 7.64 | 7.68 | 7.33 | 7.38 | 923K | -4.16% |
| 2026-09-08 | 7.57 | 7.79 | 7.49 | 7.70 | 1.14M | +0.92% |
| 2026-09-04 | 7.62 | 7.75 | 7.60 | 7.63 | 643K | -0.26% |
| 2026-09-03 | 7.64 | 7.72 | 7.53 | 7.65 | 802K | +0.92% |
| 2026-09-02 | 7.75 | 7.76 | 7.53 | 7.58 | 948K | -1.94% |
| 2026-09-01 | 7.65 | 7.77 | 7.60 | 7.73 | 1.29M | +0.26% |
| 2026-08-31 | 7.73 | 7.80 | 7.63 | 7.71 | 3.24M | -0.77% |
| 2026-08-28 | 7.92 | 8.05 | 7.76 | 7.77 | 684K | -1.65% |
ERII Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
ERII — Frequently Asked Questions
Quick answers to the most common questions about buying ERII stock.
How has ERII stock performed recently?
ERII declined -50.7% over the past year, below its 5-year annualized CAGR of -20.4%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is ERII's all-time high price?
Energy Recovery, Inc. reached $30.76 on 2023-07-19. The 52-week high is $16.30. Current 1-year return of -50.7% places the stock further from historical peaks.
Where can I download ERII historical price data?
This page provides ERII daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2008-2026, downloadable in CSV format.