AC Immune SA (ACIU) Options Chain

NASDAQ: ACIUHealth CareBiotechnology: Pharmaceutical PreparationsUSD

2.50-0.05 (-1.96%)

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

Expiration date

Expiration: Feb 19, 2027
Days to expiration: 131
Share price: $2.50
Put/call ratio (OI): 0.25
Put/call ratio (volume): 2.32
ATM implied volatility: 86.6%
Expected move: ±$1.30
Open interest (C / P): 1.68K / 420

ACIU options summary

The ACIU options chain for the February 19, 2027 expiration lists 3 call and 1 put contracts, with 131 days until expiration. Open interest stands at 1,675 calls and 420 puts, a put/call ratio of 0.25, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.50 strike is 86.6%, which implies the market expects a move of about ±$1.30 (51.9%) in AC Immune SA stock by expiration.

The most open interest sits at the $5.00 call (1.30K contracts) and the $2.50 put (420 contracts).

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

ACIU options chain · February 19, 2027

ACIU 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
ACIU $2.50
321	40	110.3%	0.52	0.25	1.05	2.50	0.15	0.60	0.55	62.9%	225	420
1,303	7	116.0%	0.15	0.10	0.30	5.00	—	—	—	—	—	—
51	50	370.3%	0.06	0.00	2.85	7.50	—	—	—	—	—	—

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 ACIU put/call ratio?

For the February 19, 2027 expiration, the ACIU put/call ratio based on open interest is 0.25 (420 puts vs 1,675 calls), and 2.32 based on today's volume. A ratio above 1 means more puts than calls.

What is ACIU's implied volatility?

At-the-money implied volatility for ACIU options expiring February 19, 2027 is about 86.6%, an annualized estimate of how much the market expects AC Immune SA stock to move.

How many ACIU option expiration dates are there?

ACIU 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.