Summit Therapeutics (SMMT) Options Chain

NASDAQ: SMMTHealth CareBiotechnology: Pharmaceutical PreparationsUSD

17.59+0.42 (+2.45%)

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

Expiration date

Expiration: Oct 30, 2026
Days to expiration: 19
Share price: $17.59
Put/call ratio (OI): 0.35
Put/call ratio (volume): 0.44
ATM implied volatility: 100.9%
Expected move: ±$4.05
Open interest (C / P): 1.25K / 437

SMMT options summary

The SMMT options chain for the October 30, 2026 expiration lists 25 call and 14 put contracts, with 19 days until expiration. Open interest stands at 1,255 calls and 437 puts, a put/call ratio of 0.35, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $17.50 strike is 100.9%, which implies the market expects a move of about ±$4.05 (23.0%) in Summit Therapeutics stock by expiration.

The most open interest sits at the $18.00 call (284 contracts) and the $12.00 put (102 contracts).

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

SMMT options chain · October 30, 2026

SMMT 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	1	571.5%	10.66	8.50	12.50	7.00	—	—	—	—	—	—
1	1	408.6%	8.00	6.50	10.20	9.00	—	—	—	—	—	—
1	1	309.0%	6.80	4.60	8.10	11.00	0.00	2.20	0.20	266.2%	—	2
—	—	—	—	—	—	12.00	0.00	1.75	0.35	209.8%	1	102
—	—	—	—	—	—	13.00	0.15	0.45	0.25	119.5%	1	11
—	—	—	—	—	—	13.50	0.00	0.70	1.65	114.5%	1	11
4	4	68.0%	4.40	1.85	5.50	14.00	0.00	0.95	0.68	116.0%	2	12
15	2	67.6%	3.35	1.85	4.60	14.50	0.10	1.20	0.50	119.9%	1	6
28	2	98.0%	3.00	1.85	4.40	15.00	0.40	0.95	0.70	109.6%	13	37
51	2	123.5%	3.22	1.85	4.40	15.50	—	—	—	—	—	—
224	2	85.2%	2.92	1.85	2.70	16.00	0.60	1.30	0.90	103.8%	1	69
68	20	80.7%	1.85	1.40	2.40	16.50	0.75	1.70	1.15	108.1%	5	38
137	10	97.0%	1.86	1.40	2.35	17.00	0.75	1.95	1.40	101.1%	4	47
223	201	93.5%	1.52	1.35	1.80	17.50	1.00	2.45	1.35	108.3%	3	2
SMMT $17.59
284	6	79.5%	1.20	0.60	1.65	18.00	1.35	2.60	1.92	106.3%	87	98
68	4	83.8%	0.96	0.60	1.40	18.50	1.45	2.95	2.45	101.6%	—	1
41	7	94.3%	1.30	0.60	1.40	19.00	2.15	2.95	2.90	103.1%	—	1
1	—	99.2%	1.43	0.60	1.25	19.50	—	—	—	—	—	—
38	2	98.2%	0.65	0.60	0.95	20.00	—	—	—	—	—	—
4	1	91.9%	0.65	0.00	0.95	21.00	—	—	—	—	—	—
51	—	105.1%	0.47	0.00	0.95	22.00	—	—	—	—	—	—
4	4	166.2%	1.32	0.00	2.45	22.50	—	—	—	—	—	—
2	—	182.0%	0.75	0.00	2.35	24.00	—	—	—	—	—	—
3	1	131.1%	0.15	0.05	0.75	25.00	—	—	—	—	—	—
1	—	202.6%	0.70	0.00	2.30	26.00	—	—	—	—	—	—
3	2	191.8%	0.30	0.00	1.75	27.00	—	—	—	—	—	—
1	—	209.5%	0.30	0.00	1.55	30.00	—	—	—	—	—	—
1	—	214.3%	0.65	0.00	0.95	35.00	—	—	—	—	—	—

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 SMMT put/call ratio?

For the October 30, 2026 expiration, the SMMT put/call ratio based on open interest is 0.35 (437 puts vs 1,255 calls), and 0.44 based on today's volume. A ratio above 1 means more puts than calls.

What is SMMT's implied volatility?

At-the-money implied volatility for SMMT options expiring October 30, 2026 is about 100.9%, an annualized estimate of how much the market expects Summit Therapeutics stock to move.

How many SMMT option expiration dates are there?

SMMT has 11 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.