Watsco (WSO) Options Chain

NYSE: WSOConsumer DiscretionaryIndustrial Machinery/ComponentsUSD

279.21-3.02 (-1.07%)

Market open · Delayed 15 min · as of Oct 9, 10:27 AM ET

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $278.53
Put/call ratio (OI): 1.71
Put/call ratio (volume): 0.53
ATM implied volatility: 42.7%
Expected move: ±$16.47
Open interest (C / P): 171 / 293

WSO options summary

The WSO options chain for the October 16, 2026 expiration lists 7 call and 9 put contracts, with 7 days until expiration. Open interest stands at 171 calls and 293 puts, a put/call ratio of 1.71, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $280.00 strike is 42.7%, which implies the market expects a move of about ±$16.47 (5.9%) in Watsco stock by expiration.

The most open interest sits at the $340.00 call (49 contracts) and the $280.00 put (115 contracts).

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

WSO options chain · October 16, 2026

WSO 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
—	—	—	—	—	—	240.00	0.00	1.50	0.95	67.0%	—	1
—	—	—	—	—	—	260.00	0.05	1.75	0.43	48.6%	3	42
—	—	—	—	—	—	270.00	1.95	3.10	1.80	40.1%	1	18
WSO $278.53
—	—	—	—	—	—	280.00	6.00	7.80	4.58	42.7%	1	115
—	—	—	2.56	—	—	290.00	12.30	16.20	13.55	55.8%	10	34
30	2	49.3%	1.35	0.00	1.70	300.00	21.10	25.40	10.20	50.1%	1	45
7	3	50.5%	0.05	0.00	1.50	310.00	30.50	36.80	12.90	68.0%	1	9
24	28	61.5%	0.92	0.00	1.50	320.00	40.50	46.40	11.40	78.7%	1	6
32	1	57.5%	0.25	0.00	0.45	330.00	50.50	56.40	34.91	90.5%	1	23
49	1	81.3%	0.78	0.00	1.50	340.00	—	—	—	—	—	—
29	1	90.4%	0.10	0.00	1.50	350.00	—	—	—	—	—	—

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 WSO put/call ratio?

For the October 16, 2026 expiration, the WSO put/call ratio based on open interest is 1.71 (293 puts vs 171 calls), and 0.53 based on today's volume. A ratio above 1 means more puts than calls.

What is WSO's implied volatility?

At-the-money implied volatility for WSO options expiring October 16, 2026 is about 42.7%, an annualized estimate of how much the market expects Watsco stock to move.

How many WSO option expiration dates are there?

WSO has 4 listed expiration dates, from Oct 16, 2026 to May 21, 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.