Silence Therapeutics Plc American Depository Share (SLN) Options Chain

NASDAQ: SLNHealthcareBiotechnologyUSD

9.52-0.30 (-3.05%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $9.52
Put/call ratio (OI): 0.06
Put/call ratio (volume): 0.03
ATM implied volatility: 89.1%
Expected move: ±$1.26
Open interest (C / P): 24.50K / 1.45K

SLN options summary

The SLN options chain for the October 16, 2026 expiration lists 10 call and 8 put contracts, with 8 days until expiration. Open interest stands at 24,499 calls and 1,452 puts, a put/call ratio of 0.06, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $10.00 strike is 89.1%, which implies the market expects a move of about ±$1.26 (13.2%) in Silence Therapeutics Plc American Depository Share stock by expiration.

The most open interest sits at the $15.00 call (7.92K contracts) and the $12.50 put (1.31K contracts).

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

SLN options chain · October 16, 2026

SLN 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
35	1	978.1%	6.97	6.00	7.60	2.50	0.00	3.80	0.05	2039.1%	1	22
3,019	1	285.9%	4.90	2.70	6.50	5.00	0.00	0.00	0.31	50.0%	1	0
22	2	297.3%	7.36	0.50	4.90	7.50	0.00	0.05	0.07	96.9%	4	17
SLN $9.52
4,058	1	105.9%	0.45	0.00	0.80	10.00	0.00	1.40	0.55	72.3%	55	92
3,307	2,099	501.6%	0.17	0.00	3.80	12.50	2.60	3.70	3.33	163.3%	5	1,313
7,920	10	239.8%	0.05	0.00	0.40	15.00	3.50	7.50	5.20	150.0%	1	8
92	65	656.3%	0.10	0.00	3.80	17.50	6.00	9.80	4.00	641.8%	—	0
6,046	10	231.3%	0.30	0.00	0.05	20.00	0.00	0.00	5.60	—	—	0
0	—	50.0%	0.83	0.00	0.00	22.50	—	—	—	—	—	—
0	—	50.0%	0.75	0.00	0.00	30.00	—	—	—	—	—	—

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 SLN put/call ratio?

For the October 16, 2026 expiration, the SLN put/call ratio based on open interest is 0.06 (1,452 puts vs 24,499 calls), and 0.03 based on today's volume. A ratio above 1 means more puts than calls.

What is SLN's implied volatility?

At-the-money implied volatility for SLN options expiring October 16, 2026 is about 89.1%, an annualized estimate of how much the market expects Silence Therapeutics Plc American Depository Share stock to move.

How many SLN option expiration dates are there?

SLN has 6 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.