Cabaletta Bio (CABA) Options Chain

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

1.93-0.02 (-1.03%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $1.93
Put/call ratio (OI): 0.35
Put/call ratio (volume): 1.90
ATM implied volatility: 93.6%
Expected move: ±$0.926
Open interest (C / P): 7.29K / 2.57K

CABA options summary

The CABA options chain for the January 15, 2027 expiration lists 12 call and 11 put contracts, with 96 days until expiration. Open interest stands at 7,292 calls and 2,574 puts, a put/call ratio of 0.35, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.00 strike is 93.6%, which implies the market expects a move of about ±$0.926 (48.0%) in Cabaletta Bio stock by expiration.

The most open interest sits at the $5.00 call (2.48K contracts) and the $4.00 put (718 contracts).

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

CABA options chain · January 15, 2027

CABA 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
83	44	168.8%	2.14	0.95	1.95	0.50	0.00	0.00	0.25	50.0%	2	0
53	44	87.5%	0.90	0.45	1.45	1.00	—	—	—	—	—	—
213	30	115.2%	0.76	0.15	1.15	1.50	0.05	0.35	0.20	108.6%	2	12
CABA $1.93
230	2	96.1%	0.64	0.00	0.70	2.00	0.10	0.70	0.56	91.0%	2	280
789	6	145.7%	0.25	0.25	0.55	2.50	0.45	1.20	0.63	109.4%	39	699
2,078	5	112.5%	0.05	0.00	0.35	3.00	0.80	1.65	0.56	106.6%	4	144
791	10	123.4%	0.10	0.00	0.30	3.50	1.20	2.20	1.05	117.2%	10	75
286	116	129.7%	0.05	0.00	0.25	4.00	1.80	2.80	2.20	161.3%	137	718
69	10	244.5%	0.95	0.00	1.00	4.50	2.10	3.10	2.20	99.2%	100	515
2,479	4	190.6%	0.05	0.00	0.50	5.00	2.60	3.60	2.66	107.8%	72	82
189	3	266.0%	0.35	0.00	1.00	5.50	3.10	4.10	2.99	115.6%	82	49
32	11	296.1%	0.15	0.00	1.00	7.50	5.00	6.00	4.93	278.5%	92	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 CABA put/call ratio?

For the January 15, 2027 expiration, the CABA put/call ratio based on open interest is 0.35 (2,574 puts vs 7,292 calls), and 1.90 based on today's volume. A ratio above 1 means more puts than calls.

What is CABA's implied volatility?

At-the-money implied volatility for CABA options expiring January 15, 2027 is about 93.6%, an annualized estimate of how much the market expects Cabaletta Bio stock to move.

How many CABA option expiration dates are there?

CABA has 7 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.