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 16, 2026
Days to expiration: 7
Share price: $17.59
Put/call ratio (OI): 0.71
Put/call ratio (volume): 3.09
ATM implied volatility: 72.2%
Expected move: ±$1.76
Open interest (C / P): 21.68K / 15.47K

SMMT options summary

The SMMT options chain for the October 16, 2026 expiration lists 40 call and 30 put contracts, with 7 days until expiration. Open interest stands at 21,675 calls and 15,470 puts, a put/call ratio of 0.71, which is fairly balanced between calls and puts. At-the-money implied volatility near the $17.50 strike is 72.2%, which implies the market expects a move of about ±$1.76 (10.0%) in Summit Therapeutics stock by expiration.

The most open interest sits at the $18.00 call (6.42K contracts) and the $15.00 put (3.15K contracts).

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

SMMT options chain · October 16, 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
25	1	1198.4%	14.50	12.50	15.30	3.00	—	—	—	—	—	—
26	3	660.9%	11.88	11.20	12.90	5.00	0.00	2.15	0.01	986.7%	2	5
74	4	520.3%	11.50	11.10	11.80	6.00	0.00	0.00	0.06	50.0%	1	0
0	1	—	10.13	8.50	0.00	7.00	—	—	—	—	—	—
23	1	587.5%	8.40	8.30	10.40	8.00	0.00	1.40	0.04	557.8%	1	31
5	1	516.0%	8.70	7.30	9.40	9.00	0.00	0.25	0.01	304.7%	2,000	2,536
105	2	358.2%	7.35	7.10	8.90	10.00	0.00	0.30	0.05	274.2%	2	337
60	1	505.1%	6.70	4.60	8.00	11.00	0.00	0.15	0.17	202.3%	1	1,450
297	2	243.0%	5.40	4.90	5.90	12.00	0.00	0.15	0.07	170.3%	7	484
1	2	301.2%	4.90	3.30	5.80	12.50	0.00	0.20	0.15	164.8%	1	33
72	4	278.1%	4.40	2.50	5.30	13.00	0.00	0.10	0.05	128.9%	8	2,449
—	—	—	—	—	—	13.50	0.00	0.35	0.16	155.5%	5	81
1,895	21	122.7%	3.00	1.80	3.70	14.00	0.00	0.15	0.05	111.7%	35	911
1	2	107.8%	2.83	1.80	4.60	14.50	0.00	0.20	0.16	105.1%	13	1,138
3,420	7	123.0%	2.85	2.15	2.85	15.00	0.05	0.15	0.12	91.0%	5	3,145
4	2	66.8%	2.20	1.80	2.50	15.50	0.10	0.25	0.16	91.4%	113	25
529	42	85.0%	1.72	1.65	2.00	16.00	0.15	0.35	0.22	87.1%	16	612
151	4	67.6%	1.22	0.95	1.70	16.50	0.25	0.40	0.35	79.3%	33	121
953	214	63.9%	0.99	0.70	1.20	17.00	0.45	0.60	0.50	82.2%	320	1,160
51	74	72.7%	0.70	0.60	0.90	17.50	0.30	1.00	0.70	71.7%	41	59
SMMT $17.59
6,417	112	69.7%	0.57	0.40	0.60	18.00	0.75	1.25	1.12	79.1%	47	290
154	52	77.3%	0.40	0.35	0.45	18.50	1.10	1.70	2.12	87.3%	2	28
407	55	74.6%	0.25	0.15	0.35	19.00	1.45	2.10	2.02	89.1%	3	153
221	100	91.4%	0.15	0.05	0.50	19.50	—	—	—	—	—	—
2,608	21	84.4%	0.13	0.10	0.20	20.00	2.35	3.80	3.50	153.3%	1	385
184	10	122.7%	0.05	0.00	0.50	21.00	2.40	4.90	4.50	121.1%	10	11
1,269	4	104.7%	0.09	0.00	0.15	22.00	5.80	9.70	8.61	491.6%	2	14
670	13	182.4%	0.10	0.00	0.75	23.00	4.10	7.60	5.52	192.6%	2	8
1	—	191.8%	0.38	0.00	0.75	23.50	—	—	—	—	—	—
303	1	216.4%	0.30	0.00	0.95	24.00	7.50	11.30	12.00	503.3%	1	0
794	30	147.7%	0.05	0.00	0.15	25.00	—	—	—	—	—	—
17	1	169.5%	0.25	0.00	0.20	26.00	—	—	—	—	—	—
160	60	353.5%	0.25	0.00	2.20	27.00	11.50	14.30	9.60	615.0%	1	1
17	4	241.4%	0.14	0.00	0.55	28.00	9.10	12.60	11.05	273.4%	2	1
0	1	50.0%	0.67	0.00	0.00	29.00	—	—	—	—	—	—
156	1	395.7%	0.05	0.00	2.15	30.00	—	—	—	—	—	—
241	3	409.2%	1.10	0.00	2.15	31.00	15.10	18.50	12.50	670.1%	—	1
13	2	422.3%	0.15	0.00	2.15	32.00	—	—	—	—	—	—
12	5	434.6%	0.15	0.00	2.15	33.00	14.10	17.10	15.91	276.2%	2	1
0	1	50.0%	1.90	0.00	0.00	34.00	—	—	—	—	—	—
339	1	250.0%	0.05	0.00	0.15	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 16, 2026 expiration, the SMMT put/call ratio based on open interest is 0.71 (15,470 puts vs 21,675 calls), and 3.09 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 16, 2026 is about 72.2%, 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.