Energy Recovery (ERII) Options Chain
NASDAQ: ERIITechnologyIndustrial Machinery/ComponentsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Jan 19, 2029
- Days to expiration
- 831
- Share price
- $6.84
- Put/call ratio (OI)
- 0.50
- Put/call ratio (volume)
- 0.00
- Expected move
- ±$5.35
- Open interest (C / P)
- 2 / 1
ERII options summary
The ERII options chain for the January 19, 2029 expiration lists 1 call and 1 put contracts, with 831 days until expiration. Open interest stands at 2 calls and 1 puts, a put/call ratio of 0.50, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $7.50 strike is 51.8%, which implies the market expects a move of about ±$5.35 (78.2%) in Energy Recovery stock by expiration.
The most open interest sits at the $10.00 call (2 contracts) and the $7.50 put (1 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ERII options chain · January 19, 2029
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 7.50 | 0.65 | 4.40 | 2.25 | |||||
| 1.75 | 0.00 | 3.60 | 10.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the ERII put/call ratio?
For the January 19, 2029 expiration, the ERII put/call ratio based on open interest is 0.50 (1 puts vs 2 calls), and 0.00 based on today's volume. A ratio above 1 means more puts than calls.
What is ERII's implied volatility?
At-the-money implied volatility for ERII options expiring January 19, 2029 is about 51.8%, an annualized estimate of how much the market expects Energy Recovery stock to move.
How many ERII option expiration dates are there?
ERII has 5 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.