Altimmune (ALT) Options Chain

NASDAQ: ALTHealth CareBiotechnology: Pharmaceutical PreparationsUSD

2.61+0.01 (+0.38%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $2.61
Put/call ratio (OI): 0.05
Put/call ratio (volume): 0.26
ATM implied volatility: 64.1%
Expected move: ±$0.8575
Open interest (C / P): 101.70K / 5.50K

ALT options summary

The ALT options chain for the January 15, 2027 expiration lists 18 call and 15 put contracts, with 96 days until expiration. Open interest stands at 101,705 calls and 5,503 puts, a put/call ratio of 0.05, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.50 strike is 64.1%, which implies the market expects a move of about ±$0.8575 (32.9%) in Altimmune stock by expiration.

The most open interest sits at the $20.00 call (18.02K contracts) and the $4.00 put (1.36K contracts).

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

ALT options chain · January 15, 2027

ALT 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
28	10	332.8%	2.75	0.20	4.30	0.50	0.00	0.00	0.04	50.0%	3	0
161	1	153.1%	1.60	1.60	1.75	1.00	0.00	0.00	0.07	50.0%	10	0
101	1	227.3%	1.41	0.60	1.55	1.50	0.00	0.75	0.10	206.3%	1	3
13,848	2	56.6%	0.71	0.40	0.95	2.00	0.00	0.60	0.05	119.1%	2	362
112	2	55.9%	0.49	0.10	0.60	2.50	0.05	0.60	0.35	72.3%	2	359
ALT $2.61
9,712	24	72.7%	0.24	0.20	0.30	3.00	0.15	0.75	0.60	93.4%	5	1,271
10,901	14	75.0%	0.16	0.05	0.25	3.50	0.55	1.35	0.80	53.1%	10	13
10,393	200	85.9%	0.11	0.10	0.15	4.00	1.10	1.75	1.40	58.6%	1	1,362
633	67	92.2%	0.12	0.05	0.15	4.50	—	—	—	—	—	—
13,106	11	95.3%	0.08	0.05	0.10	5.00	2.00	2.85	2.41	79.7%	3	1,133
617	99	94.5%	0.08	0.00	0.10	5.50	—	—	—	—	—	—
604	52	159.4%	0.15	0.00	0.50	6.00	—	—	—	—	—	—
6,635	99	135.2%	0.03	0.00	0.20	7.00	3.50	4.20	4.42	—	1	560
10,812	4	143.8%	0.04	0.00	0.10	10.00	0.00	0.00	7.17	—	1	0
1,308	20	157.8%	0.01	0.00	0.10	12.00	5.40	9.50	8.17	183.6%	8	79
1,861	1	228.9%	0.05	0.00	0.40	15.00	10.30	12.60	11.55	232.0%	72	231
2,858	1	215.6%	0.01	0.00	0.25	17.00	11.50	14.70	13.50	267.2%	72	130
18,015	136	175.0%	0.05	0.00	0.05	20.00	0.00	0.00	17.00	—	3	0

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 ALT put/call ratio?

For the January 15, 2027 expiration, the ALT put/call ratio based on open interest is 0.05 (5,503 puts vs 101,705 calls), and 0.26 based on today's volume. A ratio above 1 means more puts than calls.

What is ALT's implied volatility?

At-the-money implied volatility for ALT options expiring January 15, 2027 is about 64.1%, an annualized estimate of how much the market expects Altimmune stock to move.

How many ALT option expiration dates are there?

ALT has 11 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

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.