SELLAS Life Sciences Group (SLS) Options Chain

NASDAQ: SLSHealth CareBiotechnology: Pharmaceutical PreparationsUSD

11.65+0.39 (+3.46%)

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

Expiration date

Expiration: Oct 30, 2026
Days to expiration: 19
Share price: $11.65
Put/call ratio (OI): 0.51
Put/call ratio (volume): 1.13
ATM implied volatility: 83.3%
Expected move: ±$2.21
Open interest (C / P): 6.53K / 3.33K

SLS options summary

The SLS options chain for the October 30, 2026 expiration lists 29 call and 21 put contracts, with 19 days until expiration. Open interest stands at 6,532 calls and 3,334 puts, a put/call ratio of 0.51, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $11.50 strike is 83.3%, which implies the market expects a move of about ±$2.21 (19.0%) in SELLAS Life Sciences Group stock by expiration.

The most open interest sits at the $20.00 call (1.70K contracts) and the $7.00 put (773 contracts).

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

SLS options chain · October 30, 2026

SLS 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
—	—	—	—	—	—	3.00	0.00	0.05	0.10	278.1%	10	27
1	2	648.0%	6.90	5.80	8.90	4.00	0.00	1.20	0.05	469.5%	4	26
81	140	50.0%	7.10	4.60	8.70	5.00	0.00	0.05	0.05	178.1%	490	397
—	—	—	—	—	—	6.00	0.00	2.15	0.05	407.0%	2	45
15	—	285.6%	5.54	3.80	5.40	7.00	0.00	0.45	0.05	184.4%	205	773
0	4	99.2%	4.79	2.70	4.70	8.00	0.05	0.25	0.10	129.7%	25	277
—	—	—	—	—	—	8.50	0.00	0.65	0.26	146.1%	10	128
2	1	115.6%	2.70	2.30	3.50	9.00	0.15	0.50	0.25	127.3%	30	243
—	—	—	—	—	—	9.50	0.10	0.60	0.35	112.9%	2	43
102	27	113.3%	2.15	1.80	2.50	10.00	0.10	1.30	0.50	136.3%	7	361
47	28	104.7%	1.42	1.30	2.20	10.50	0.50	0.90	0.62	115.2%	23	636
108	3	106.3%	1.43	1.25	1.70	11.00	0.75	1.10	0.81	116.0%	39	254
98	7	64.7%	1.22	0.10	1.45	11.50	0.90	1.15	1.30	101.9%	2	21
SLS $11.65
515	18	99.0%	1.05	0.55	1.30	12.00	1.20	1.65	1.74	112.9%	10	34
26	52	99.9%	0.95	0.40	1.10	12.50	1.50	1.90	1.77	109.4%	4	9
544	23	112.5%	0.75	0.60	0.85	13.00	1.80	2.35	2.03	112.5%	2	3
95	4	118.4%	0.60	0.50	0.80	13.50	2.05	2.70	2.52	105.7%	2	6
94	28	119.9%	0.46	0.40	0.70	14.00	2.55	3.60	5.00	137.9%	—	5
126	8	122.5%	0.45	0.40	0.55	14.50	—	—	—	—	—	—
368	49	120.5%	0.37	0.35	0.40	15.00	3.30	4.70	6.20	151.6%	—	13
61	1	141.4%	0.37	0.25	0.70	15.50	—	—	—	—	—	—
436	20	131.3%	0.30	0.20	0.45	16.00	4.10	5.50	5.50	147.1%	—	1
5	1	138.9%	0.32	0.15	0.50	16.50	—	—	—	—	—	—
650	1	131.1%	0.32	0.15	0.30	17.00	—	—	—	—	—	—
259	250	219.3%	0.35	0.00	1.75	17.50	—	—	—	—	—	—
702	1	174.0%	0.55	0.05	0.80	18.00	—	—	—	—	—	—
283	1	190.6%	0.50	0.00	1.00	18.50	—	—	—	—	—	—
9	4	193.8%	0.18	0.00	0.95	19.00	—	—	—	—	—	—
1,704	40	146.1%	0.20	0.05	0.20	20.00	—	—	—	—	—	—
50	10	220.7%	0.10	0.00	1.00	21.00	—	—	—	—	—	—
21	10	231.3%	0.10	0.00	1.00	22.00	—	—	—	—	—	—
5	—	241.2%	0.85	0.00	1.00	23.00	—	—	—	—	—	—
125	35	180.5%	0.15	0.00	0.20	25.00	12.50	14.90	14.18	235.9%	—	32

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 SLS put/call ratio?

For the October 30, 2026 expiration, the SLS put/call ratio based on open interest is 0.51 (3,334 puts vs 6,532 calls), and 1.13 based on today's volume. A ratio above 1 means more puts than calls.

What is SLS's implied volatility?

At-the-money implied volatility for SLS options expiring October 30, 2026 is about 83.3%, an annualized estimate of how much the market expects SELLAS Life Sciences Group stock to move.

How many SLS option expiration dates are there?

SLS 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.