Plug Power (PLUG) Options Chain

NASDAQ: PLUGEnergyIndustrial Machinery/ComponentsUSD

1.68-0.05 (-2.89%)

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

Expiration date

Expiration: Oct 23, 2026
Days to expiration: 13
Share price: $1.68
Put/call ratio (OI): 0.18
Put/call ratio (volume): 0.69
ATM implied volatility: 69.5%
Expected move: ±$0.2204
Open interest (C / P): 5.86K / 1.05K

PLUG options summary

The PLUG options chain for the October 23, 2026 expiration lists 9 call and 7 put contracts, with 13 days until expiration. Open interest stands at 5,861 calls and 1,051 puts, a put/call ratio of 0.18, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.50 strike is 69.5%, which implies the market expects a move of about ±$0.2204 (13.1%) in Plug Power stock by expiration.

The most open interest sits at the $3.00 call (2.13K contracts) and the $2.00 put (835 contracts).

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

PLUG options chain · October 23, 2026

PLUG 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
38	2	581.3%	1.21	1.11	1.39	0.50	—	—	—	—	—	—
1	—	50.0%	1.16	0.47	0.89	1.00	—	—	—	—	—	—
88	13	81.3%	0.24	0.17	0.26	1.50	0.01	0.02	0.01	57.8%	2	125
PLUG $1.68
1,787	211	75.0%	0.02	0.01	0.02	2.00	0.28	0.35	0.31	93.8%	161	835
1,787	10	125.0%	0.01	0.00	0.02	2.50	0.71	1.03	0.75	184.4%	1	84
2,127	3	150.0%	0.01	0.00	0.01	3.00	1.19	1.53	1.25	221.9%	1	1
22	4	175.0%	0.02	0.00	0.01	3.50	1.63	2.03	1.76	193.8%	2	3
10	1	262.5%	0.09	0.00	0.05	4.00	2.11	2.53	2.16	100.0%	1	1
1	—	287.5%	0.01	0.00	0.05	4.50	2.55	3.05	2.57	520.3%	1	2

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 PLUG put/call ratio?

For the October 23, 2026 expiration, the PLUG put/call ratio based on open interest is 0.18 (1,051 puts vs 5,861 calls), and 0.69 based on today's volume. A ratio above 1 means more puts than calls.

What is PLUG's implied volatility?

At-the-money implied volatility for PLUG options expiring October 23, 2026 is about 69.5%, an annualized estimate of how much the market expects Plug Power stock to move.

How many PLUG option expiration dates are there?

PLUG has 11 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.