Nautilus Biotechnology (NAUT) Options Chain

NASDAQ: NAUTIndustrialsBiotechnology: Laboratory Analytical InstrumentsUSD

2.25+0.43 (+23.63%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $2.25
Put/call ratio (OI): 0.11
Put/call ratio (volume): 0.04
ATM implied volatility: 136.5%
Expected move: ±$1.33
Open interest (C / P): 3.74K / 415

NAUT options summary

The NAUT options chain for the December 18, 2026 expiration lists 3 call and 3 put contracts, with 68 days until expiration. Open interest stands at 3,737 calls and 415 puts, a put/call ratio of 0.11, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.50 strike is 136.5%, which implies the market expects a move of about ±$1.33 (58.9%) in Nautilus Biotechnology stock by expiration.

The most open interest sits at the $2.50 call (2.85K contracts) and the $2.50 put (414 contracts).

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

NAUT options chain · December 18, 2026

NAUT 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
NAUT $2.25
2,847	90	133.2%	0.40	0.35	0.50	2.50	0.50	0.90	0.85	139.8%	2	414
824	33	145.3%	0.13	0.05	0.15	5.00	0.00	0.00	2.60	—	—	0
66	30	278.9%	0.05	0.00	0.75	7.50	5.10	6.60	5.30	338.3%	4	1

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 NAUT put/call ratio?

For the December 18, 2026 expiration, the NAUT put/call ratio based on open interest is 0.11 (415 puts vs 3,737 calls), and 0.04 based on today's volume. A ratio above 1 means more puts than calls.

What is NAUT's implied volatility?

At-the-money implied volatility for NAUT options expiring December 18, 2026 is about 136.5%, an annualized estimate of how much the market expects Nautilus Biotechnology stock to move.

How many NAUT option expiration dates are there?

NAUT 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.