Legend Biotech (LEGN) Options Chain

NASDAQ: LEGNHealth CareBiotechnology: Pharmaceutical PreparationsUSD

18.71-0.41 (-2.14%)

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

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $18.71
Put/call ratio (OI): 0.34
Put/call ratio (volume): 0.16
ATM implied volatility: 109.4%
Expected move: ±$3.03
Open interest (C / P): 3.28K / 1.10K

LEGN options summary

The LEGN options chain for the October 16, 2026 expiration lists 8 call and 6 put contracts, with 8 days until expiration. Open interest stands at 3,280 calls and 1,104 puts, a put/call ratio of 0.34, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $17.50 strike is 109.4%, which implies the market expects a move of about ±$3.03 (16.2%) in Legend Biotech stock by expiration.

The most open interest sits at the $20.00 call (1.56K contracts) and the $17.50 put (626 contracts).

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

LEGN options chain · October 16, 2026

LEGN 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
0	1	662.7%	8.50	6.60	10.70	10.00	—	—	—	—	—	—
3	1	496.9%	6.00	4.10	8.20	12.50	0.00	0.25	0.05	183.6%	—	30
39	1	349.8%	3.45	1.65	5.60	15.00	0.00	0.40	0.10	130.1%	10	62
37	3	142.4%	2.40	0.00	2.20	17.50	0.20	0.50	0.37	76.4%	1	626
LEGN $18.71
1,558	30	99.0%	0.30	0.20	1.00	20.00	1.30	3.70	2.00	156.3%	10	373
1,259	100	83.6%	0.09	0.00	0.15	22.50	2.00	6.00	3.70	109.4%	1	12
377	2	108.6%	0.08	0.00	0.10	25.00	4.40	8.40	3.81	127.3%	—	1
7	2	369.1%	0.30	0.00	2.15	32.50	—	—	—	—	—	—

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 LEGN put/call ratio?

For the October 16, 2026 expiration, the LEGN put/call ratio based on open interest is 0.34 (1,104 puts vs 3,280 calls), and 0.16 based on today's volume. A ratio above 1 means more puts than calls.

What is LEGN's implied volatility?

At-the-money implied volatility for LEGN options expiring October 16, 2026 is about 109.4%, an annualized estimate of how much the market expects Legend Biotech stock to move.

How many LEGN option expiration dates are there?

LEGN has 10 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.