Energy Recovery Inc.

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, 2024
IV High
196.07% on Aug 13, 2025

Open Interest (OI)

Today's Open Interest
4,597
Put-Call Ratio
0.38
Put Open Interest
1,263
Call Open Interest
3,334
Open Interest Avg (30-day)
3,521
Today vs Open Interest Avg (30-day)
130.56%

Option Volume

Today's Volume
39
Put-Call Ratio
0.05
Put Volume
2
Call Volume
37
Volume Avg (30-day)
204
Today 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