Inogen (INGN) Options Chain

NASDAQ: INGNHealth CareIndustrial SpecialtiesUSD

6.18+0.24 (+4.04%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $6.18
Put/call ratio (OI): 0.19
Put/call ratio (volume): 0.40
ATM implied volatility: 62.2%
Expected move: ±$1.66
Open interest (C / P): 1.62K / 310

INGN options summary

The INGN options chain for the December 18, 2026 expiration lists 4 call and 2 put contracts, with 68 days until expiration. Open interest stands at 1,621 calls and 310 puts, a put/call ratio of 0.19, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 62.2%, which implies the market expects a move of about ±$1.66 (26.8%) in Inogen stock by expiration.

The most open interest sits at the $7.50 call (542 contracts) and the $5.00 put (300 contracts).

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

INGN options chain · December 18, 2026

INGN 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
500	69	63.7%	1.35	1.25	1.50	5.00	0.00	0.35	0.25	60.7%	50	300
INGN $6.18
542	1	64.5%	0.30	0.20	0.35	7.50	1.15	2.30	2.35	77.9%	—	10
524	50	96.1%	0.10	0.05	0.35	10.00	—	—	—	—	—	—
55	4	179.1%	0.05	0.00	1.30	12.50	—	—	—	—	—	—

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 INGN put/call ratio?

For the December 18, 2026 expiration, the INGN put/call ratio based on open interest is 0.19 (310 puts vs 1,621 calls), and 0.40 based on today's volume. A ratio above 1 means more puts than calls.

What is INGN's implied volatility?

At-the-money implied volatility for INGN options expiring December 18, 2026 is about 62.2%, an annualized estimate of how much the market expects Inogen stock to move.

How many INGN option expiration dates are there?

INGN 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.