Dyne Therapeutics (DYN) Options Chain

NASDAQ: DYNHealth CareBiotechnology: Pharmaceutical PreparationsUSD

16.64+0.27 (+1.65%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $16.64
Put/call ratio (OI): 3.16
Put/call ratio (volume): 25.41
ATM implied volatility: 94.9%
Expected move: ±$6.82
Open interest (C / P): 2.47K / 7.81K

DYN options summary

The DYN options chain for the December 18, 2026 expiration lists 20 call and 14 put contracts, with 68 days until expiration. Open interest stands at 2,473 calls and 7,812 puts, a put/call ratio of 3.16, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $16.00 strike is 94.9%, which implies the market expects a move of about ±$6.82 (41.0%) in Dyne Therapeutics stock by expiration.

The most open interest sits at the $27.00 call (557 contracts) and the $19.00 put (3.19K contracts).

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

DYN options chain · December 18, 2026

DYN 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
15	10	322.3%	18.50	12.50	16.40	2.50	—	—	—	—	—	—
15	20	213.3%	15.40	10.00	14.00	5.00	—	—	—	—	—	—
0	3	—	11.10	0.00	0.00	7.50	—	—	—	—	—	—
33	14	98.2%	6.43	5.30	8.60	10.00	—	—	—	—	—	—
2	1	616.4%	12.40	11.60	16.50	12.50	0.00	0.80	0.34	69.5%	1	2
127	3	55.4%	2.94	1.35	3.60	15.00	0.00	4.40	1.14	108.5%	2	327
46	3	94.9%	2.00	0.20	3.00	16.00	—	—	—	—	—	—
DYN $16.64
114	1	67.8%	1.01	0.00	3.20	17.50	0.20	4.90	2.35	71.0%	2	258
17	2	88.6%	1.23	0.00	3.40	19.00	2.00	5.00	3.83	68.8%	7	3,185
531	1	65.1%	0.90	0.60	1.00	20.00	2.70	6.00	4.20	72.6%	1	782
62	1	68.0%	0.62	0.00	1.35	21.00	—	—	—	—	—	—
12	3	77.3%	0.52	0.15	1.15	22.50	4.90	7.70	6.57	67.3%	3,000	2,880
65	1	82.8%	0.50	0.00	1.15	24.00	0.00	0.00	3.60	—	8	0
297	3	84.5%	0.25	0.00	1.00	25.00	7.30	10.00	6.30	72.2%	6	20
395	60	93.5%	4.80	0.00	1.15	26.00	8.20	10.90	4.90	69.3%	92	45
557	1	98.3%	0.25	0.00	1.15	27.00	8.30	11.90	5.22	140.7%	90	146
—	—	—	—	—	—	28.00	10.20	13.00	5.20	81.6%	40	50
51	3	111.4%	0.10	0.00	1.15	30.00	11.20	14.90	9.80	155.4%	47	117
3	1	200.6%	3.20	0.10	4.90	32.00	13.20	17.00	8.00	168.1%	40	0
122	1	182.1%	1.90	0.00	3.40	35.00	16.30	20.00	10.80	179.7%	44	0
9	1	143.0%	1.55	0.00	1.40	37.00	—	—	—	—	—	—

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 DYN put/call ratio?

For the December 18, 2026 expiration, the DYN put/call ratio based on open interest is 3.16 (7,812 puts vs 2,473 calls), and 25.41 based on today's volume. A ratio above 1 means more puts than calls.

What is DYN's implied volatility?

At-the-money implied volatility for DYN options expiring December 18, 2026 is about 94.9%, an annualized estimate of how much the market expects Dyne Therapeutics stock to move.

How many DYN option expiration dates are there?

DYN has 6 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.