Westlake (WLK) Options Chain

NYSE: WLKIndustrialsMajor ChemicalsUSD

62.29-0.02 (-0.03%)

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

Expiration date

Expiration: Apr 16, 2027
Days to expiration: 187
Share price: $62.29
Put/call ratio (OI): 0.25
Put/call ratio (volume): 0.04
ATM implied volatility: 55.8%
Expected move: ±$24.86
Open interest (C / P): 580 / 147

WLK options summary

The WLK options chain for the April 16, 2027 expiration lists 8 call and 5 put contracts, with 187 days until expiration. Open interest stands at 580 calls and 147 puts, a put/call ratio of 0.25, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $65.00 strike is 55.8%, which implies the market expects a move of about ±$24.86 (39.9%) in Westlake stock by expiration.

The most open interest sits at the $85.00 call (307 contracts) and the $55.00 put (139 contracts).

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

WLK options chain · April 16, 2027

WLK 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
—	—	—	—	—	—	40.00	0.05	3.80	1.20	63.0%	—	2
—	—	—	—	—	—	50.00	0.90	4.80	3.10	61.3%	1	5
—	—	—	—	—	—	55.00	2.10	6.00	3.51	55.2%	3	139
WLK $62.29
—	—	—	8.15	—	—	65.00	7.00	11.50	6.00	55.8%	—	1
13	2	56.5%	5.83	2.50	7.20	70.00	—	—	—	—	—	—
70	3	57.1%	3.10	1.25	5.90	75.00	—	—	—	—	—	—
1	3	58.1%	5.80	0.20	4.90	80.00	—	—	—	—	—	—
307	50	64.0%	2.92	0.05	4.90	85.00	22.00	26.50	16.80	57.0%	—	0
2	2	61.4%	2.50	0.05	4.90	100.00	—	—	—	—	—	—
185	50	54.3%	0.77	0.05	2.00	110.00	—	—	—	—	—	—
2	1	56.0%	2.38	0.00	1.85	115.00	—	—	—	—	—	—

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 WLK put/call ratio?

For the April 16, 2027 expiration, the WLK put/call ratio based on open interest is 0.25 (147 puts vs 580 calls), and 0.04 based on today's volume. A ratio above 1 means more puts than calls.

What is WLK's implied volatility?

At-the-money implied volatility for WLK options expiring April 16, 2027 is about 55.8%, an annualized estimate of how much the market expects Westlake stock to move.

How many WLK option expiration dates are there?

WLK has 6 listed expiration dates, from Oct 16, 2026 to Dec 17, 2027.

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.