Kiniksa Pharmaceuticals International (KNSA) Options Chain

NASDAQ: KNSAHealth CareBiotechnology: Pharmaceutical PreparationsUSD

79.78+1.03 (+1.31%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $79.78
Put/call ratio (OI): 0.53
Put/call ratio (volume): 0.16
ATM implied volatility: 53.0%
Expected move: ±$13.99
Open interest (C / P): 170 / 90

KNSA options summary

The KNSA options chain for the November 20, 2026 expiration lists 18 call and 7 put contracts, with 40 days until expiration. Open interest stands at 170 calls and 90 puts, a put/call ratio of 0.53, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $80.00 strike is 53.0%, which implies the market expects a move of about ±$13.99 (17.5%) in Kiniksa Pharmaceuticals International stock by expiration.

The most open interest sits at the $35.00 call (25 contracts) and the $65.00 put (30 contracts).

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

KNSA options chain · November 20, 2026

KNSA 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
2	1	175.0%	59.55	57.50	62.20	20.00	0.00	0.00	0.15	50.0%	1	0
0	2	—	18.10	0.00	0.00	30.00	—	—	—	—	—	—
25	5	158.8%	29.92	41.70	45.50	35.00	—	—	—	—	—	—
2	1	154.8%	36.00	36.70	41.00	40.00	—	—	—	—	—	—
20	1	153.6%	31.40	32.50	36.80	45.00	0.00	4.90	2.30	163.5%	5	11
0	3	—	27.20	0.00	0.00	50.00	4.60	9.30	5.92	216.7%	—	2
1	4	78.6%	11.46	23.00	27.80	55.00	—	—	—	—	—	—
9	8	56.1%	15.82	18.00	22.30	60.00	14.00	18.80	18.60	279.9%	—	1
10	5	58.4%	12.91	13.50	18.20	65.00	0.00	5.00	2.40	80.6%	—	30
5	10	63.0%	9.42	10.20	14.50	70.00	—	—	—	—	—	—
23	2	60.2%	8.60	6.80	11.00	75.00	1.95	5.70	4.08	57.2%	2	26
KNSA $79.78
21	2	55.4%	5.55	3.70	7.90	80.00	3.60	7.40	6.22	50.5%	2	20
11	2	63.2%	4.20	3.30	6.00	85.00	—	—	—	—	—	—
25	3	50.8%	2.80	0.05	4.00	90.00	—	—	—	—	—	—
6	4	63.6%	1.25	0.10	4.20	95.00	—	—	—	—	—	—
10	10	78.1%	2.00	0.00	5.00	100.00	—	—	—	—	—	—
0	—	12.5%	1.40	0.00	0.00	105.00	—	—	—	—	—	—
0	—	25.0%	1.00	0.00	0.00	110.00	—	—	—	—	—	—

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 KNSA put/call ratio?

For the November 20, 2026 expiration, the KNSA put/call ratio based on open interest is 0.53 (90 puts vs 170 calls), and 0.16 based on today's volume. A ratio above 1 means more puts than calls.

What is KNSA's implied volatility?

At-the-money implied volatility for KNSA options expiring November 20, 2026 is about 53.0%, an annualized estimate of how much the market expects Kiniksa Pharmaceuticals International stock to move.

How many KNSA option expiration dates are there?

KNSA has 5 listed expiration dates, from Oct 16, 2026 to Apr 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.