AnaptysBio (ANAB) Options Chain

NASDAQ: ANABHealth CareBiotechnology: Pharmaceutical PreparationsUSD

45.96-0.25 (-0.54%)

Market open · Delayed 15 min · as of Oct 9, 3:23 PM ET

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $45.96
Put/call ratio (OI): 0.47
Put/call ratio (volume): 0.34
ATM implied volatility: 60.9%
Expected move: ±$3.88
Open interest (C / P): 141 / 66

ANAB options summary

The ANAB options chain for the October 16, 2026 expiration lists 5 call and 6 put contracts, with 7 days until expiration. Open interest stands at 141 calls and 66 puts, a put/call ratio of 0.47, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $45.00 strike is 60.9%, which implies the market expects a move of about ±$3.88 (8.4%) in AnaptysBio stock by expiration.

The most open interest sits at the $55.00 call (72 contracts) and the $55.00 put (30 contracts).

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

ANAB options chain · October 16, 2026

ANAB 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
—	—	—	—	—	—	40.00	0.00	4.70	0.50	187.9%	—	1
—	—	—	—	—	—	45.00	0.40	1.20	1.00	60.9%	2	12
ANAB $45.96
20	10	147.3%	0.50	0.00	4.90	50.00	2.00	6.00	2.74	128.3%	1	3
72	26	134.6%	1.25	0.00	2.00	55.00	6.50	10.70	3.60	165.6%	10	30
45	1	117.8%	0.31	0.00	0.50	60.00	11.50	15.50	6.38	195.5%	—	20
2	—	269.9%	1.90	0.00	4.60	65.00	16.50	21.00	10.05	253.9%	—	0
2	1	353.1%	0.40	0.00	4.60	80.00	—	—	—	—	—	—

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 ANAB put/call ratio?

For the October 16, 2026 expiration, the ANAB put/call ratio based on open interest is 0.47 (66 puts vs 141 calls), and 0.34 based on today's volume. A ratio above 1 means more puts than calls.

What is ANAB's implied volatility?

At-the-money implied volatility for ANAB options expiring October 16, 2026 is about 60.9%, an annualized estimate of how much the market expects AnaptysBio stock to move.

How many ANAB option expiration dates are there?

ANAB has 4 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.