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The price of Energy Recovery, Inc. (ERII) on October 9, 2026 is 6.88 USD, +0.51% on the day. Over 52 weeks the stock traded between 6.60 USD and 18.32 USD; the price now sits 2% of the way up that range. Over the past year the price changed by -56.07%. The P/E ratio is 17.3, which is below the sector median (26.0). Market capitalization is 356.25 million USD, rank 7 among 12 stocks of the same industry with a known capitalization.
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Next earnings report: 04 November 2026 · Earnings calendar
Energy Recovery, Inc. trades on Nasdaq under the ticker ERII. The company belongs to the Industrials sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks ERII has traded between 6.60 $ and 18.32 $. As of 09 October 2026 the price stood 2.05 % of the way from the 52-week low to the high.
Over one year ERII shares fell 56.07 %; over six months they fell 38.16 %. Volatility over 90 days is 40.23 %. Dividends are not included: this is price change only, as of 09 October 2026.
ERII trades at a price-to-earnings ratio of 17.3, below the sector median of 26.0. Price to sales is 2.6, above the sector median of 1.3. Price to book is 1.9, below the sector median of 2.6. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 08 October 2026 | 6.76 | 6.92 | 6.69 | 6.84 | 1M |
| 07 October 2026 | 6.94 | 6.95 | 6.63 | 6.73 | 689,000 |
| 06 October 2026 | 6.90 | 7.15 | 6.87 | 7.08 | 1M |
| 05 October 2026 | 6.75 | 6.84 |
The series is stated in the current share scale after splits; dividends are not included in the price
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
No events for this security recently.
Address:1717 DOOLITTLE DRIVE, SAN LEANDRO, CA, 94577, US
Energy Recovery, Inc. reported revenue of 137M $ and net income of 21M $ over the last four quarters. Net margin is 15.07 %. Revenue changed by −3.05 % year over year. Earnings per share are 0.37 $. Market capitalisation is 356M $.
ERII has a return on equity of 11.17 %, above the sector median of 5.92 %. Return on assets is 9.85 %, above the sector median of 2.51 %. Operating margin is 15.80 %, above the sector median of 4.32 %.
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| 6.63 |
| 6.83 |
| 872,100 |
| 02 October 2026 | 6.81 | 6.83 | 6.71 | 6.77 | 618,200 |
| 01 October 2026 | 6.68 | 6.77 | 6.60 | 6.70 | 725,500 |
| 30 September 2026 | 6.75 | 6.78 | 6.66 | 6.67 | 824,600 |
| 29 September 2026 | 6.75 | 6.82 | 6.70 | 6.75 | 689,500 |
| 28 September 2026 | 6.78 | 6.79 | 6.60 | 6.72 | 931,400 |
| 25 September 2026 | 6.83 | 6.90 | 6.77 | 6.81 | 681,700 |
| 24 September 2026 | 6.76 | 6.84 | 6.69 | 6.83 | 800,500 |
| 23 September 2026 | 7.06 | 7.06 | 6.78 | 6.80 | 777,600 |
| 22 September 2026 | 7.06 | 7.14 | 6.95 | 7.12 | 754,100 |
| 21 September 2026 | 7.00 | 7.07 | 6.91 | 7.03 | 977,800 |
| 18 September 2026 | 6.97 | 7.06 | 6.89 | 6.99 | 2M |
| 17 September 2026 | 7.19 | 7.20 | 6.96 | 7.05 | 656,400 |
| 16 September 2026 | 7.08 | 7.33 | 7.05 | 7.10 | 912,700 |
| 15 September 2026 | 7.11 | 7.12 | 6.90 | 7.06 | 1M |
| 14 September 2026 | 7.18 | 7.27 | 6.93 | 7.09 | 2M |
| 11 September 2026 | 7.39 | 7.59 | 7.33 | 7.55 | 928,800 |