4D Molecular Therapeutics (FDMT) Options Chain

NASDAQ: FDMTHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD

12.70+0.11 (+0.87%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

After hours: 12.70 0.00%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $12.70
Put/call ratio (OI): 0.03
Put/call ratio (volume): 0.35
ATM implied volatility: 275.0%
Expected move: ±$5.17
Open interest (C / P): 3.65K / 101

FDMT options summary

The FDMT options chain for the October 16, 2026 expiration lists 18 call and 11 put contracts, with 8 days until expiration. Open interest stands at 3,650 calls and 101 puts, a put/call ratio of 0.03, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $13.00 strike is 275.0%, which implies the market expects a move of about ±$5.17 (40.7%) in 4D Molecular Therapeutics stock by expiration.

The most open interest sits at the $10.00 call (3.11K contracts) and the $9.00 put (56 contracts).

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

FDMT options chain · October 16, 2026

FDMT 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
1	—	929.7%	7.08	6.00	11.00	2.00	—	—	—	—	—	—
0	2	—	6.80	0.00	0.00	3.00	—	—	—	—	—	—
0	10	—	5.60	0.00	0.00	4.00	—	—	—	—	—	—
161	10	995.7%	8.54	5.00	9.50	5.00	0.00	0.00	0.05	50.0%	1	0
—	—	—	—	—	—	6.00	0.00	4.90	0.45	1010.5%	—	4
23	2	705.9%	8.90	3.00	7.50	7.00	0.00	3.80	0.20	728.5%	2	4
40	2	599.6%	7.90	2.00	6.50	8.00	0.00	1.55	0.20	388.7%	2	5
59	3	135.2%	6.85	3.60	3.90	9.00	0.00	3.80	0.05	525.4%	2	56
3,114	2	100.0%	2.67	2.60	2.90	10.00	0.00	1.90	0.17	287.9%	2	18
70	3	269.9%	1.40	0.10	2.95	11.00	0.00	4.00	0.40	378.9%	5	5
38	44	68.4%	2.46	0.75	1.15	12.00	0.00	1.00	0.25	103.9%	1	7
FDMT $12.70
12	3	275.0%	0.88	0.00	4.10	13.00	—	—	—	—	—	—
4	12	307.8%	2.38	0.00	3.90	14.00	0.10	4.90	0.55	213.3%	1	1
49	3	141.4%	0.51	0.00	0.80	15.00	0.50	4.90	1.85	141.4%	—	1
59	5	372.9%	1.15	0.00	3.80	16.00	0.00	0.00	3.00	—	20	0
15	—	321.5%	0.70	0.00	2.55	17.00	—	—	—	—	—	—
4	3	428.5%	0.10	0.00	3.80	18.00	—	—	—	—	—	—
1	—	290.2%	1.00	0.00	1.20	20.00	—	—	—	—	—	—
0	—	50.0%	0.05	0.00	0.00	25.00	—	—	—	—	—	—

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 FDMT put/call ratio?

For the October 16, 2026 expiration, the FDMT put/call ratio based on open interest is 0.03 (101 puts vs 3,650 calls), and 0.35 based on today's volume. A ratio above 1 means more puts than calls.

What is FDMT's implied volatility?

At-the-money implied volatility for FDMT options expiring October 16, 2026 is about 275.0%, an annualized estimate of how much the market expects 4D Molecular Therapeutics stock to move.

How many FDMT option expiration dates are there?

FDMT has 5 listed expiration dates, from Oct 16, 2026 to Jul 16, 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.