Outset Medical (OM) Options Chain

NASDAQ: OMHealth CareBiotechnology: Electromedical & Electrotherapeutic ApparatusUSD

4.05-0.04 (-0.98%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 41
Share price: $4.05
Put/call ratio (OI): 0.59
Put/call ratio (volume): 2.68
ATM implied volatility: 145.3%
Expected move: ±$1.97
Open interest (C / P): 697 / 413

OM options summary

The OM options chain for the November 20, 2026 expiration lists 4 call and 2 put contracts, with 41 days until expiration. Open interest stands at 697 calls and 413 puts, a put/call ratio of 0.59, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 145.3%, which implies the market expects a move of about ±$1.97 (48.7%) in Outset Medical stock by expiration.

The most open interest sits at the $5.00 call (571 contracts) and the $2.50 put (392 contracts).

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

OM options chain · November 20, 2026

OM 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
0	1	—	2.67	0.00	0.00	2.50	0.00	0.55	0.15	196.9%	50	392
OM $4.05
571	15	168.8%	0.65	0.10	1.10	5.00	0.10	2.50	1.27	121.9%	1	21
120	1	200.8%	0.22	0.05	0.65	7.50	—	—	—	—	—	—
6	2	223.1%	0.52	0.00	0.50	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 OM put/call ratio?

For the November 20, 2026 expiration, the OM put/call ratio based on open interest is 0.59 (413 puts vs 697 calls), and 2.68 based on today's volume. A ratio above 1 means more puts than calls.

What is OM's implied volatility?

At-the-money implied volatility for OM options expiring November 20, 2026 is about 145.3%, an annualized estimate of how much the market expects Outset Medical stock to move.

How many OM option expiration dates are there?

OM has 5 listed expiration dates, from Oct 16, 2026 to May 21, 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.