Energy Recovery Inc. (ERII)
NASDAQ: ERII
· Real-Time Price · USD
14.13
-0.36 (-2.48%)
At close: Aug 15, 2025, 2:18 PM
ERII Option Overview
Overview for all option chains of ERII. As of August 15, 2025, ERII options have an IV of 500% and an IV rank of 336.9%. The volume is 39 contracts, which is 19.12% of average daily volume of 204 contracts. The volume put-call ratio is 0.05, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
500%IV Rank
336.9%Historical Volatility
38.02%IV Low
67.77% on Dec 24, 2024IV High
196.07% on Aug 13, 2025Open Interest (OI)
Today's Open Interest
4,597Put-Call Ratio
0.38Put Open Interest
1,263Call Open Interest
3,334Open Interest Avg (30-day)
3,521Today vs Open Interest Avg (30-day)
130.56%Option Volume
Today's Volume
39Put-Call Ratio
0.05Put Volume
2Call Volume
37Volume Avg (30-day)
204Today vs Volume Avg (30-day)
19.12%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 |
Aug 15, 2025 | 25 | 1 | 0.04 | 1,368 | 745 | 0.54 | 500% | 12.5 |
Sep 19, 2025 | 1 | 1 | 1 | 1,122 | 56 | 0.05 | 99.38% | 12.5 |
Oct 17, 2025 | 0 | 0 | 0 | 0 | 0 | 0 | 104.86% | 2.5 |
Nov 21, 2025 | 11 | 0 | 0 | 618 | 460 | 0.74 | 68.66% | 15 |
Jan 16, 2026 | 0 | 0 | 0 | 0 | 0 | 0 | 12.41% | 50 |
Feb 20, 2026 | 0 | 0 | 0 | 226 | 2 | 0.01 | 43.66% | 10 |