Energy Recovery Stock Price History
NASDAQ: ERIITechnologyIndustrial Machinery/ComponentsUSD
6.840.00 (0.00%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
ERII price history at a glance
The price history for Energy Recovery (ERII) on this page begins on June 30, 2008, when the stock closed at $9.83; it most recently closed at $6.84 on October 5, 2026. The highest price in this record is $30.76, reached on July 17, 2023; the latest close is 77.8% below that peak. Across the 17 complete calendar years in the table, ERII finished higher in 7 and lower in 10. Its best year was 2013 (+57.6%) and its worst was 2010 (-46.8%).
Over roughly 18 years the share price changed -30.4%, a -2.0% compound annual price return (excluding dividends). In the last 12 months alone, ERII has lost 55.4%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2008
- $30.76
- Date of high
- Jul 17, 2023
- Low since 2008
- $1.95
- Date of low
- Apr 9, 2012
- 52-week high
- $18.32
- 52-week low
- $6.60
- IPO year
- 2008
- Last close
- $6.84
ERII returns
1 week
+1.03%
1 month
-7.32%
3 months
-21.65%
6 months
-38.43%
Year to date
-49.30%
1 year
-55.35%
3 years
-64.94%
5 years
-65.70%
ERII price return, excluding dividends.
ERII annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 6.84 | -50.15% |
| 2025 | 13.72 | -8.90% |
| 2024 | 15.06 | -20.06% |
| 2023 | 18.84 | -8.05% |
| 2022 | 20.49 | -4.65% |
| 2021 | 21.49 | +57.55% |
| 2020 | 13.64 | +39.33% |
| 2019 | 9.79 | +35.22% |
| 2018 | 7.24 | -17.26% |
| 2017 | 8.75 | -15.46% |
| 2016 | 10.35 | +46.39% |
| 2015 | 7.07 | +35.70% |
| 2014 | 5.21 | -3.34% |
| 2013 | 5.39 | +57.60% |
| 2012 | 3.42 | +32.56% |
| 2011 | 2.58 | -29.51% |
| 2010 | 3.66 | -46.80% |
| 2009 | 6.88 | -13.46% |
| 2008* | 7.95 | -19.13% |
* Partial year: the record begins after the start of 2008; return measured from the first available close.
2026 return is year to date.
ERII daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 6.84 | 6.88 | 6.73 | 6.84 | 0.00% | |
| 6.72 | 6.92 | 6.71 | 6.84 | +1.63% | |
| 6.94 | 6.95 | 6.63 | 6.73 | -4.94% | |
| 6.90 | 7.15 | 6.87 | 7.08 | +3.66% | |
| 6.75 | 6.84 | 6.63 | 6.83 | +0.89% | |
| 6.81 | 6.83 | 6.71 | 6.77 | +1.04% | |
| 6.68 | 6.77 | 6.60 | 6.70 | +0.45% | |
| 6.75 | 6.78 | 6.66 | 6.67 | -1.19% | |
| 6.75 | 6.82 | 6.70 | 6.75 | +0.45% | |
| 6.78 | 6.79 | 6.60 | 6.72 | -1.32% | |
| 6.83 | 6.90 | 6.77 | 6.81 | -0.29% | |
| 6.76 | 6.84 | 6.69 | 6.83 | +0.44% | |
| 7.06 | 7.06 | 6.78 | 6.80 | -4.49% | |
| 7.06 | 7.14 | 6.95 | 7.12 | +1.28% | |
| 7.00 | 7.07 | 6.91 | 7.03 | +0.57% | |
| 6.97 | 7.06 | 6.89 | 6.99 | -0.85% | |
| 7.19 | 7.20 | 6.96 | 7.05 | -0.70% | |
| 7.08 | 7.33 | 7.05 | 7.10 | +0.57% | |
| 7.11 | 7.12 | 6.90 | 7.06 | -0.42% | |
| 7.18 | 7.27 | 6.93 | 7.09 | -6.09% | |
| 7.39 | 7.59 | 7.33 | 7.55 | +3.85% | |
| 7.35 | 7.42 | 7.25 | 7.27 | -1.49% | |
| 7.64 | 7.68 | 7.33 | 7.38 | -4.16% | |
| 7.57 | 7.79 | 7.49 | 7.70 | +0.92% | |
| 7.62 | 7.75 | 7.60 | 7.63 | -0.26% | |
| 7.64 | 7.72 | 7.53 | 7.65 | +0.92% | |
| 7.75 | 7.76 | 7.53 | 7.58 | -1.94% | |
| 7.65 | 7.77 | 7.60 | 7.73 | +0.26% | |
| 7.73 | 7.80 | 7.63 | 7.71 | -0.77% | |
| 7.92 | 8.05 | 7.76 | 7.77 | -1.65% | |
| 7.90 | 7.96 | 7.76 | 7.90 | -0.50% | |
| 7.86 | 8.02 | 7.82 | 7.94 | +1.15% | |
| 7.84 | 7.90 | 7.74 | 7.85 | +0.64% | |
| 7.90 | 7.90 | 7.63 | 7.80 | -1.27% | |
| 7.82 | 7.94 | 7.76 | 7.90 | +1.94% | |
| 7.79 | 7.86 | 7.58 | 7.75 | -2.02% | |
| 7.86 | 8.00 | 7.78 | 7.91 | +0.38% | |
| 8.06 | 8.12 | 7.74 | 7.88 | -3.19% | |
| 8.35 | 8.38 | 8.09 | 8.14 | -2.51% | |
| 7.91 | 8.39 | 7.76 | 8.35 | +6.78% | |
| 7.76 | 7.84 | 7.51 | 7.82 | +0.51% | |
| 7.77 | 7.93 | 7.74 | 7.78 | +0.78% | |
| 7.99 | 8.05 | 7.71 | 7.72 | -3.38% | |
| 8.70 | 8.73 | 7.87 | 7.99 | -7.95% | |
| 8.86 | 8.92 | 8.57 | 8.68 | -0.57% | |
| 8.36 | 8.81 | 8.31 | 8.73 | -1.47% | |
| 9.11 | 9.34 | 8.80 | 8.86 | -2.85% | |
| 9.03 | 9.17 | 8.87 | 9.12 | +2.36% | |
| 8.79 | 8.92 | 8.56 | 8.91 | +3.01% | |
| 8.50 | 8.66 | 8.31 | 8.65 | +2.61% | |
| 8.28 | 8.46 | 8.16 | 8.43 | +3.56% | |
| 8.30 | 8.39 | 7.86 | 8.14 | -3.10% | |
| 8.56 | 8.73 | 8.35 | 8.40 | -1.41% | |
| 8.45 | 8.66 | 8.37 | 8.52 | +1.19% | |
| 8.46 | 8.56 | 8.36 | 8.42 | +0.12% | |
| 8.43 | 8.61 | 8.37 | 8.41 | -1.52% | |
| 8.62 | 8.68 | 8.47 | 8.54 | -0.93% | |
| 8.52 | 8.74 | 8.52 | 8.62 | +1.65% | |
| 8.65 | 8.68 | 8.46 | 8.48 | -1.62% | |
| 8.68 | 8.97 | 8.52 | 8.62 | -0.92% | |
| 8.56 | 8.73 | 8.50 | 8.70 | +0.93% | |
| 8.68 | 8.85 | 8.44 | 8.62 | -0.46% | |
| 8.68 | 8.75 | 8.59 | 8.66 | 0.00% | |
| 8.73 | 8.86 | 8.55 | 8.66 | -0.80% | |
| 8.91 | 8.91 | 8.67 | 8.73 | -2.24% | |
| 8.60 | 8.96 | 8.57 | 8.93 | +3.60% | |
| 8.61 | 8.72 | 8.56 | 8.62 | -2.05% | |
| 8.90 | 8.95 | 8.58 | 8.80 | -2.22% | |
| 8.87 | 9.04 | 8.80 | 9.00 | +1.81% | |
| 8.94 | 9.06 | 8.79 | 8.84 | -0.67% | |
| 8.98 | 9.23 | 8.89 | 8.90 | -1.33% | |
| 8.89 | 9.07 | 8.70 | 9.02 | +2.38% | |
| 8.96 | 9.00 | 8.75 | 8.81 | -0.11% | |
| 8.70 | 9.05 | 8.68 | 8.82 | +0.34% | |
| 8.89 | 8.95 | 8.73 | 8.79 | +0.23% | |
| 8.93 | 9.11 | 8.75 | 8.77 | -1.02% | |
| 8.60 | 9.02 | 8.54 | 8.86 | -0.45% | |
| 9.42 | 9.42 | 8.85 | 8.90 | -5.52% | |
| 9.54 | 9.91 | 9.16 | 9.42 | +4.78% | |
| 8.60 | 9.67 | 8.57 | 8.99 | +4.78% | |
| 8.76 | 9.07 | 8.54 | 8.58 | -2.05% | |
| 8.52 | 9.06 | 8.43 | 8.76 | +5.16% | |
| 8.19 | 8.41 | 8.15 | 8.33 | +1.71% | |
| 7.97 | 8.24 | 7.83 | 8.19 | +3.41% | |
| 8.09 | 8.11 | 7.89 | 7.92 | -2.46% | |
| 8.07 | 8.30 | 7.96 | 8.12 | +1.88% | |
| 8.03 | 8.15 | 7.83 | 7.97 | -0.50% | |
| 8.29 | 8.30 | 8.00 | 8.01 | -3.38% | |
| 8.15 | 8.39 | 8.06 | 8.29 | +3.11% | |
| 8.13 | 8.35 | 8.00 | 8.04 | -1.71% | |
| 8.06 | 8.30 | 8.06 | 8.18 | +2.25% | |
| 8.12 | 8.20 | 7.94 | 8.00 | -2.08% | |
| 8.43 | 8.52 | 8.09 | 8.17 | -5.33% | |
| 8.59 | 8.71 | 8.50 | 8.63 | -0.58% | |
| 8.81 | 8.81 | 8.57 | 8.68 | -1.03% | |
| 8.92 | 9.00 | 8.71 | 8.77 | -0.90% | |
| 8.67 | 8.86 | 8.61 | 8.85 | +2.67% | |
| 8.55 | 8.72 | 8.37 | 8.62 | -0.35% | |
| 8.48 | 8.73 | 8.39 | 8.65 | +2.25% | |
| 9.00 | 9.08 | 8.44 | 8.46 | -6.62% | |
| 8.63 | 9.27 | 8.61 | 9.06 | +7.73% | |
| 8.45 | 8.64 | 8.20 | 8.41 | -2.44% | |
| 8.40 | 8.64 | 8.18 | 8.62 | +3.73% | |
| 8.73 | 8.77 | 8.14 | 8.31 | -4.81% | |
| 8.70 | 8.82 | 8.53 | 8.73 | +0.34% | |
| 9.21 | 9.33 | 8.62 | 8.70 | -4.71% | |
| 9.67 | 9.67 | 9.03 | 9.13 | -3.18% | |
| 11.13 | 11.13 | 9.30 | 9.43 | -18.78% | |
| 11.51 | 11.72 | 11.48 | 11.61 | +2.65% | |
| 11.11 | 11.48 | 11.07 | 11.31 | +2.82% | |
| 11.02 | 11.19 | 10.97 | 11.00 | -0.36% | |
| 11.11 | 11.17 | 10.85 | 11.04 | -0.27% | |
| 10.84 | 11.13 | 10.75 | 11.07 | +3.46% | |
| 11.07 | 11.11 | 10.62 | 10.70 | -3.52% | |
| 11.00 | 11.12 | 10.81 | 11.09 | +0.36% | |
| 11.30 | 11.47 | 11.03 | 11.05 | -2.04% | |
| 11.00 | 11.39 | 10.95 | 11.28 | +2.45% | |
| 10.90 | 11.14 | 10.75 | 11.01 | +1.85% | |
| 10.46 | 10.89 | 10.46 | 10.81 | +4.24% | |
| 10.74 | 10.86 | 10.23 | 10.37 | -0.86% | |
| 10.50 | 10.69 | 10.43 | 10.46 | -1.13% | |
| 10.66 | 10.79 | 10.51 | 10.58 | +1.24% | |
| 10.62 | 10.70 | 10.28 | 10.45 | -1.60% | |
| 10.48 | 10.89 | 10.48 | 10.62 | -5.93% | |
| 11.41 | 11.53 | 11.27 | 11.29 | -1.05% | |
| 11.09 | 11.50 | 11.05 | 11.41 | +2.70% | |
| 11.00 | 11.27 | 11.00 | 11.11 | +0.45% | |
| 10.72 | 11.12 | 10.67 | 11.06 | +3.17% | |
| 10.81 | 10.91 | 10.61 | 10.72 | +3.78% | |
| 10.28 | 10.45 | 10.25 | 10.33 | -0.86% | |
| 10.34 | 10.44 | 10.20 | 10.42 | +2.16% | |
| 10.02 | 10.41 | 9.85 | 10.20 | -0.20% | |
| 10.30 | 10.31 | 10.07 | 10.22 | +1.49% | |
| 9.97 | 10.17 | 9.82 | 10.07 | +2.65% | |
| 10.00 | 10.02 | 9.76 | 9.81 | -0.61% | |
| 9.87 | 9.98 | 9.76 | 9.87 | -0.70% | |
| 10.09 | 10.21 | 9.86 | 9.94 | -1.97% | |
| 10.36 | 10.43 | 9.99 | 10.14 | -0.29% | |
| 10.02 | 10.51 | 9.97 | 10.17 | +0.49% | |
| 9.77 | 10.16 | 9.51 | 10.12 | +6.98% | |
| 9.79 | 9.86 | 9.35 | 9.46 | -2.77% | |
| 9.76 | 9.91 | 9.65 | 9.73 | -1.82% | |
| 10.10 | 10.26 | 9.89 | 9.91 | -2.75% | |
| 10.32 | 10.39 | 10.10 | 10.19 | -0.68% | |
| 10.24 | 10.37 | 10.12 | 10.26 | +2.09% | |
| 10.28 | 10.46 | 9.89 | 10.05 | -1.86% | |
| 10.53 | 10.64 | 10.13 | 10.24 | -5.01% | |
| 10.82 | 10.89 | 10.60 | 10.78 | -0.83% | |
| 11.12 | 11.22 | 10.77 | 10.87 | -2.25% | |
| 10.87 | 11.61 | 10.35 | 11.12 | +4.81% | |
| 10.67 | 10.81 | 10.38 | 10.61 | -1.12% | |
| 10.60 | 10.78 | 10.54 | 10.73 | +0.09% | |
| 10.40 | 10.81 | 10.21 | 10.72 | +4.89% | |
| 10.01 | 10.24 | 9.59 | 10.22 | -0.39% | |
| 10.29 | 10.36 | 9.85 | 10.26 | -1.63% | |
| 10.46 | 10.79 | 10.03 | 10.43 | 0.00% | |
| 11.45 | 11.97 | 10.22 | 10.43 | -35.30% | |
| 16.18 | 16.18 | 15.77 | 16.12 | +0.31% | |
| 16.11 | 16.16 | 15.80 | 16.07 | +0.06% | |
| 16.13 | 16.27 | 15.71 | 16.06 | -1.11% | |
| 16.03 | 16.30 | 15.89 | 16.24 | +1.18% | |
| 15.76 | 16.12 | 15.74 | 16.05 | +1.90% | |
| 15.88 | 16.00 | 15.66 | 15.75 | -0.88% | |
| 15.56 | 16.10 | 15.44 | 15.89 | +1.86% | |
| 15.43 | 15.81 | 15.42 | 15.60 | +1.50% | |
| 15.63 | 15.89 | 15.31 | 15.37 | -0.45% | |
| 15.71 | 15.90 | 15.31 | 15.44 | -0.96% | |
| 15.75 | 15.83 | 15.52 | 15.59 | -1.39% | |
| 15.51 | 15.90 | 15.29 | 15.81 | +2.20% | |
| 15.14 | 15.58 | 15.14 | 15.47 | +2.38% | |
| 14.91 | 15.28 | 14.87 | 15.11 | +0.87% | |
| 15.00 | 15.07 | 14.79 | 14.98 | +1.15% | |
| 14.98 | 15.20 | 14.54 | 14.81 | -0.94% | |
| 14.46 | 15.02 | 14.26 | 14.95 | +2.47% | |
| 14.60 | 14.73 | 14.37 | 14.59 | -1.29% | |
| 14.68 | 14.90 | 14.53 | 14.78 | +0.89% | |
| 14.55 | 14.96 | 14.24 | 14.65 | +1.17% | |
| 14.39 | 14.57 | 14.33 | 14.48 | +1.05% | |
| 14.30 | 14.48 | 14.27 | 14.33 | +0.21% | |
| 14.58 | 14.62 | 14.28 | 14.30 | -2.26% | |
| 14.51 | 14.72 | 14.49 | 14.63 | +1.46% | |
| 14.14 | 14.48 | 14.04 | 14.42 | +3.15% | |
| 14.09 | 14.18 | 13.90 | 13.98 | -2.24% | |
| 14.28 | 14.37 | 14.17 | 14.30 | 0.00% | |
| 14.34 | 14.50 | 14.22 | 14.30 | +0.56% | |
| 14.35 | 14.37 | 14.04 | 14.22 | -1.11% | |
| 14.32 | 14.40 | 14.16 | 14.38 | +0.70% | |
| 14.16 | 14.47 | 14.10 | 14.28 | +0.85% | |
| 14.49 | 14.55 | 14.12 | 14.16 | -1.94% | |
| 14.00 | 14.47 | 13.98 | 14.44 | +2.70% | |
| 14.37 | 14.44 | 14.04 | 14.06 | -2.50% | |
| 14.26 | 14.48 | 14.17 | 14.42 | +0.63% | |
| 13.78 | 14.58 | 13.78 | 14.33 | +4.45% | |
| 13.60 | 13.72 | 13.44 | 13.72 | +1.70% | |
| 13.51 | 13.59 | 13.31 | 13.49 | +0.07% | |
| 13.77 | 13.78 | 13.47 | 13.48 | -2.32% | |
| 13.86 | 13.94 | 13.75 | 13.80 | -0.58% | |
| 13.81 | 13.88 | 13.70 | 13.88 | +0.29% | |
| 13.81 | 13.91 | 13.75 | 13.84 | +0.22% | |
| 13.95 | 13.98 | 13.68 | 13.81 | -1.22% | |
| 14.15 | 14.24 | 13.96 | 13.98 | -0.64% | |
| 14.43 | 14.46 | 14.03 | 14.07 | -2.49% | |
| 14.24 | 14.55 | 14.24 | 14.43 | +2.12% | |
| 14.39 | 14.62 | 14.11 | 14.13 | -2.15% | |
| 14.52 | 14.75 | 14.42 | 14.44 | -0.55% | |
| 14.54 | 14.59 | 14.38 | 14.52 | +0.35% | |
| 14.63 | 14.71 | 14.32 | 14.47 | -0.89% | |
| 14.42 | 14.72 | 14.32 | 14.60 | +1.32% | |
| 14.20 | 14.56 | 14.09 | 14.41 | +1.26% | |
| 14.49 | 14.55 | 14.21 | 14.23 | -1.86% | |
| 14.76 | 14.91 | 14.45 | 14.50 | -1.49% | |
| 14.66 | 14.81 | 14.60 | 14.72 | +0.27% | |
| 14.87 | 15.00 | 14.67 | 14.68 | -1.48% | |
| 14.56 | 14.93 | 14.56 | 14.90 | +3.26% | |
| 14.51 | 14.65 | 14.37 | 14.43 | -0.21% | |
| 14.19 | 14.57 | 14.19 | 14.46 | +0.07% | |
| 14.42 | 14.50 | 14.29 | 14.45 | +0.49% | |
| 14.25 | 14.43 | 14.10 | 14.38 | +0.91% | |
| 14.01 | 14.33 | 13.98 | 14.25 | +2.67% | |
| 13.69 | 14.00 | 13.59 | 13.88 | +1.76% | |
| 13.30 | 13.80 | 13.28 | 13.64 | +2.71% | |
| 14.27 | 14.36 | 13.27 | 13.28 | -5.14% | |
| 14.48 | 14.61 | 13.74 | 14.00 | -2.98% | |
| 14.37 | 14.50 | 14.07 | 14.43 | -0.48% | |
| 14.51 | 14.77 | 14.42 | 14.50 | -0.34% | |
| 14.34 | 14.56 | 14.30 | 14.55 | +0.14% | |
| 14.10 | 14.65 | 14.08 | 14.53 | +1.89% | |
| 14.06 | 14.44 | 13.97 | 14.26 | +1.49% | |
| 14.19 | 14.29 | 13.89 | 14.05 | -0.07% | |
| 14.30 | 14.71 | 14.05 | 14.06 | +0.57% | |
| 14.49 | 14.49 | 13.47 | 13.98 | -3.52% | |
| 15.35 | 15.72 | 14.35 | 14.49 | -16.05% | |
| 16.54 | 17.36 | 16.50 | 17.26 | +5.18% | |
| 16.76 | 16.82 | 16.34 | 16.41 | -2.38% | |
| 17.11 | 17.11 | 16.81 | 16.81 | -1.75% | |
| 17.10 | 17.20 | 16.93 | 17.11 | -0.12% | |
| 17.10 | 17.23 | 16.95 | 17.13 | -0.23% | |
| 17.31 | 17.53 | 16.99 | 17.17 | -1.32% | |
| 17.53 | 17.64 | 17.24 | 17.40 | -1.08% | |
| 18.15 | 18.32 | 17.47 | 17.59 | -2.87% | |
| 17.95 | 18.31 | 17.79 | 18.11 | +1.34% | |
| 17.30 | 17.89 | 17.27 | 17.87 | +3.77% | |
| 17.11 | 17.26 | 16.91 | 17.22 | +0.35% | |
| 16.93 | 17.22 | 16.61 | 17.16 | +0.76% | |
| 16.91 | 17.09 | 16.77 | 17.03 | +1.61% | |
| 16.63 | 16.88 | 16.53 | 16.76 | -0.06% | |
| 16.45 | 16.83 | 16.36 | 16.77 | +2.63% | |
| 15.96 | 16.38 | 15.77 | 16.34 | +3.81% | |
| 15.35 | 15.85 | 15.35 | 15.74 | +1.16% | |
| 15.53 | 15.58 | 15.24 | 15.56 | +1.90% | |
| 15.32 | 15.43 | 15.18 | 15.27 | -0.33% | |
| 15.51 | 15.79 | 15.29 | 15.32 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the ERII chart for longer ranges.