Perma-Fix Environmental Services (PESI) Options Chain

NASDAQ: PESIIndustrialsEnvironmental ServicesUSD

13.76-0.40 (-2.82%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $13.76
Put/call ratio (OI): 3.25
Put/call ratio (volume): 1.00
ATM implied volatility: 97.8%
Expected move: ±$4.46
Open interest (C / P): 51 / 166

PESI options summary

The PESI options chain for the November 20, 2026 expiration lists 3 call and 2 put contracts, with 40 days until expiration. Open interest stands at 51 calls and 166 puts, a put/call ratio of 3.25, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $15.00 strike is 97.8%, which implies the market expects a move of about ±$4.46 (32.4%) in Perma-Fix Environmental Services stock by expiration.

The most open interest sits at the $17.50 call (35 contracts) and the $15.00 put (144 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

PESI options chain · November 20, 2026

PESI calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
1	1	109.2%	4.04	1.20	4.00	12.50	0.80	1.00	0.80	82.5%	6	22
PESI $13.76
15	—	103.7%	2.20	0.05	2.80	15.00	0.75	2.45	1.50	92.0%	10	144
35	15	89.3%	1.25	0.00	1.10	17.50	—	—	—	—	—	—

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 PESI put/call ratio?

For the November 20, 2026 expiration, the PESI put/call ratio based on open interest is 3.25 (166 puts vs 51 calls), and 1.00 based on today's volume. A ratio above 1 means more puts than calls.

What is PESI's implied volatility?

At-the-money implied volatility for PESI options expiring November 20, 2026 is about 97.8%, an annualized estimate of how much the market expects Perma-Fix Environmental Services stock to move.

How many PESI option expiration dates are there?

PESI has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.

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.