Energy Recovery, Inc. (ERII) NASDAQ
Currency In USD
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ERII Historical Return
If you invested $1000 in Energy Recovery, Inc. (ERII) 10 years ago, it would be worth $422.86 as of October 03, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $350.41, while $1000 invested 1 year ago would be worth $429.3. This corresponds to total returns of -57.71%, -64.96%, -57.07%, respectively, with annualized returns of -8.24%, -18.92%, -57.07%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
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ERII Historical Data
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| October 02, 2026 | 6.81 | 6.77 | 6.77 | 6.83 | 6.71 | 618,150 |
| October 01, 2026 | 6.68 | 6.7 | 6.7 | 6.77 | 6.6 | 725,493 |
| September 30, 2026 | 6.75 | 6.67 | 6.67 | 6.78 | 6.66 | 824,635 |
| September 29, 2026 | 6.75 | 6.75 | 6.75 | 6.82 | 6.7 | 689,502 |
| September 28, 2026 | 6.78 | 6.72 | 6.72 | 6.79 | 6.6 | 931,277 |
| September 25, 2026 | 6.83 | 6.81 | 6.81 | 6.9 | 6.77 | 681,666 |
| September 24, 2026 | 6.76 | 6.83 | 6.83 | 6.84 | 6.69 | 800,471 |
| September 23, 2026 | 7.06 | 6.8 | 6.8 | 7.06 | 6.78 | 777,584 |
| September 22, 2026 | 7.06 | 7.12 | 7.12 | 7.14 | 6.95 | 754,096 |
| September 21, 2026 | 6.98 | 7.03 | 7.03 | 7.08 | 6.93 | 977,121 |
| September 18, 2026 | 6.97 | 6.99 | 6.99 | 7.06 | 6.89 | 1.95M |
| September 17, 2026 | 7.19 | 7.05 | 7.05 | 7.2 | 6.96 | 656,420 |
| September 16, 2026 | 7.08 | 7.1 | 7.1 | 7.33 | 7.05 | 912,723 |
| September 15, 2026 | 7.11 | 7.06 | 7.06 | 7.12 | 6.9 | 1.29M |
| September 11, 2026 | 7.33 | 7.55 | 7.55 | 7.59 | 7.33 | 928,823 |
| September 10, 2026 | 7.35 | 7.27 | 7.27 | 7.42 | 7.25 | 810,715 |
| September 09, 2026 | 7.64 | 7.38 | 7.38 | 7.68 | 7.33 | 922,706 |
| September 08, 2026 | 7.57 | 7.7 | 7.7 | 7.79 | 7.49 | 1.14M |
| September 04, 2026 | 7.62 | 7.63 | 7.63 | 7.75 | 7.6 | 642,883 |
| September 03, 2026 | 7.64 | 7.65 | 7.65 | 7.72 | 7.53 | 802,366 |
| September 02, 2026 | 7.75 | 7.58 | 7.58 | 7.76 | 7.53 | 945,731 |
| September 01, 2026 | 7.65 | 7.73 | 7.73 | 7.77 | 7.6 | 1.29M |
| August 31, 2026 | 7.73 | 7.71 | 7.71 | 7.8 | 7.63 | 3.24M |
| August 28, 2026 | 7.92 | 7.77 | 7.77 | 8.05 | 7.76 | 683,798 |
| August 27, 2026 | 7.9 | 7.9 | 7.9 | 7.96 | 7.76 | 566,859 |
| August 26, 2026 | 7.86 | 7.94 | 7.94 | 8.02 | 7.82 | 682,588 |
| August 25, 2026 | 7.84 | 7.85 | 7.85 | 7.9 | 7.74 | 583,654 |
| August 24, 2026 | 7.88 | 7.8 | 7.8 | 7.88 | 7.63 | 810,168 |
| August 21, 2026 | 7.82 | 7.9 | 7.9 | 7.94 | 7.76 | 505,783 |
| August 20, 2026 | 7.79 | 7.75 | 7.75 | 7.86 | 7.58 | 1.02M |
| August 19, 2026 | 7.86 | 7.91 | 7.91 | 8 | 7.78 | 0 |
| August 18, 2026 | 8.06 | 7.88 | 7.88 | 8.12 | 7.74 | 1M |
| August 17, 2026 | 8.35 | 8.14 | 8.14 | 8.38 | 8.09 | 1.18M |
| August 14, 2026 | 7.91 | 8.35 | 8.35 | 8.39 | 7.76 | 1.35M |
| August 13, 2026 | 7.76 | 7.82 | 7.82 | 7.84 | 7.51 | 1.28M |
| August 12, 2026 | 7.8 | 7.78 | 7.78 | 7.93 | 7.74 | 0 |
| August 11, 2026 | 7.99 | 7.72 | 7.72 | 8.05 | 7.71 | 0 |
| August 10, 2026 | 8.7 | 7.99 | 7.99 | 8.73 | 7.87 | 913,825 |
| August 07, 2026 | 8.86 | 8.68 | 8.68 | 8.91 | 8.57 | 976,273 |
| August 06, 2026 | 8.36 | 8.73 | 8.73 | 8.81 | 8.31 | 1.33M |
| August 05, 2026 | 9.11 | 8.86 | 8.86 | 9.34 | 8.8 | 909,828 |
| August 04, 2026 | 9.03 | 9.12 | 9.12 | 9.16 | 8.87 | 951,075 |
| August 03, 2026 | 8.79 | 8.91 | 8.91 | 8.92 | 8.56 | 1.28M |
| July 31, 2026 | 8.5 | 8.65 | 8.65 | 8.66 | 8.31 | 1.45M |
| July 30, 2026 | 8.28 | 8.43 | 8.43 | 8.46 | 8.16 | 847,260 |
| July 29, 2026 | 8.3 | 8.14 | 8.14 | 8.39 | 7.86 | 1.51M |
| July 28, 2026 | 8.56 | 8.4 | 8.4 | 8.73 | 8.35 | 688,119 |
| July 27, 2026 | 8.45 | 8.52 | 8.52 | 8.66 | 8.37 | 767,380 |
| July 24, 2026 | 8.46 | 8.42 | 8.42 | 8.56 | 8.36 | 514,134 |
| July 23, 2026 | 8.43 | 8.41 | 8.41 | 8.61 | 8.37 | 546,312 |
| July 22, 2026 | 8.62 | 8.54 | 8.54 | 8.68 | 8.47 | 608,112 |
| July 21, 2026 | 8.52 | 8.62 | 8.62 | 8.74 | 8.52 | 596,394 |
| July 20, 2026 | 8.65 | 8.48 | 8.48 | 8.68 | 8.46 | 558,451 |
| July 17, 2026 | 8.68 | 8.62 | 8.62 | 8.97 | 8.52 | 741,266 |
| July 16, 2026 | 8.56 | 8.7 | 8.7 | 8.73 | 8.5 | 594,321 |
| July 15, 2026 | 8.71 | 8.62 | 8.62 | 8.85 | 8.44 | 699,432 |
| July 14, 2026 | 8.68 | 8.66 | 8.66 | 8.75 | 8.59 | 570,228 |
| July 13, 2026 | 8.73 | 8.66 | 8.66 | 8.86 | 8.55 | 893,084 |
| July 10, 2026 | 8.91 | 8.73 | 8.73 | 8.91 | 8.67 | 676,658 |
| July 09, 2026 | 8.6 | 8.93 | 8.93 | 8.96 | 8.57 | 955,394 |
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