C4 Therapeutics (CCCC) Options Chain

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

2.85+0.03 (+1.06%)

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

After hours: 2.85 0.00%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $2.85
Put/call ratio (OI): 1.39
Put/call ratio (volume): 1.77
ATM implied volatility: 132.8%
Expected move: ±$0.5604
Open interest (C / P): 1.77K / 2.46K

CCCC options summary

The CCCC options chain for the October 16, 2026 expiration lists 9 call and 7 put contracts, with 8 days until expiration. Open interest stands at 1,772 calls and 2,455 puts, a put/call ratio of 1.39, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $3.00 strike is 132.8%, which implies the market expects a move of about ±$0.5604 (19.7%) in C4 Therapeutics stock by expiration.

The most open interest sits at the $4.00 call (663 contracts) and the $3.00 put (2.20K contracts).

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

CCCC options chain · October 16, 2026

CCCC 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
0	4	—	3.70	0.00	0.00	0.50	0.00	0.05	0.03	681.3%	2	3
1	1	1184.4%	2.42	1.30	2.30	1.00	0.00	0.75	0.03	1059.4%	2	13
0	41	—	2.65	0.00	0.00	1.50	0.00	0.75	0.03	712.5%	4	1
107	21	50.0%	1.03	0.35	1.35	2.00	0.00	0.10	0.05	203.1%	10	12
CCCC $2.85
626	8	146.9%	0.15	0.05	0.35	3.00	0.15	0.45	0.25	118.8%	25	2,196
663	8	176.6%	0.10	0.00	0.10	4.00	0.75	1.70	1.15	199.2%	115	229
205	1	426.6%	0.05	0.00	0.55	5.00	1.25	2.15	1.81	50.0%	1	1
144	1	403.1%	0.03	0.00	0.30	6.00	—	—	—	—	—	—
26	5	453.1%	0.10	0.00	0.30	7.00	—	—	—	—	—	—

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 CCCC put/call ratio?

For the October 16, 2026 expiration, the CCCC put/call ratio based on open interest is 1.39 (2,455 puts vs 1,772 calls), and 1.77 based on today's volume. A ratio above 1 means more puts than calls.

What is CCCC's implied volatility?

At-the-money implied volatility for CCCC options expiring October 16, 2026 is about 132.8%, an annualized estimate of how much the market expects C4 Therapeutics stock to move.

How many CCCC option expiration dates are there?

CCCC has 7 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.