Energy Recovery Inc. (ERII)
NASDAQ: ERII
· Real-Time Price · USD
14.36
-0.02 (-0.14%)
At close: Sep 10, 2025, 1:59 PM
ERII Option Overview
Overview for all option chains of ERII. As of September 10, 2025, ERII options have an IV of 205.5% and an IV rank of 182.05%. The volume is 119 contracts, which is 123.96% of average daily volume of 96 contracts. The volume put-call ratio is 0.01, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
205.5%IV Rank
182.05%Historical Volatility
38.22%IV Low
66.68% on Mar 31, 2025IV High
142.94% on Sep 09, 2025Open Interest (OI)
Today's Open Interest
3,200Put-Call Ratio
0.28Put Open Interest
695Call Open Interest
2,505Open Interest Avg (30-day)
2,718Today vs Open Interest Avg (30-day)
117.73%Option Volume
Today's Volume
119Put-Call Ratio
0.01Put Volume
1Call Volume
118Volume Avg (30-day)
96Today vs Volume Avg (30-day)
123.96%Option Chain Statistics
This table provides a comprehensive overview of all ERII options grouped by their expiration dates.
| Expiration | Call Vol | Put Vol | P/C Vol | Call OI | Put OI | P/C OI | Implied Volatility | Max Pain |
| Sep 19, 2025 | 5 | 0 | 0 | 1,252 | 56 | 0.04 | 205.5% | 12.5 |
| Oct 17, 2025 | 97 | 0 | 0 | 187 | 112 | 0.6 | 94.47% | 15 |
| Nov 21, 2025 | 6 | 0 | 0 | 754 | 474 | 0.63 | 78.12% | 15 |
| Jan 16, 2026 | 0 | 0 | 0 | 0 | 0 | 0 | 12.41% | 50 |
| Feb 20, 2026 | 10 | 1 | 0.1 | 312 | 53 | 0.17 | 53.55% | 12.5 |