Casella Waste Systems (CWST) Options Chain

NASDAQ: CWSTUtilitiesEnvironmental ServicesUSD

83.78-0.27 (-0.32%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $83.78
Put/call ratio (OI): 2.42
Put/call ratio (volume): 76.00
ATM implied volatility: 56.4%
Expected move: ±$15.65
Open interest (C / P): 156 / 378

CWST options summary

The CWST options chain for the November 20, 2026 expiration lists 6 call and 4 put contracts, with 40 days until expiration. Open interest stands at 156 calls and 378 puts, a put/call ratio of 2.42, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $80.00 strike is 56.4%, which implies the market expects a move of about ±$15.65 (18.7%) in Casella Waste Systems stock by expiration.

The most open interest sits at the $95.00 call (150 contracts) and the $65.00 put (186 contracts).

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

CWST options chain · November 20, 2026

CWST 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
—	—	—	—	—	—	65.00	0.00	1.40	0.86	59.3%	—	186
—	—	—	—	—	—	70.00	0.00	1.00	0.90	51.3%	1	1
1	1	65.6%	9.75	9.10	12.20	75.00	0.20	3.50	1.81	66.5%	1	37
1	—	57.9%	8.70	5.40	8.40	80.00	1.20	4.30	4.64	54.9%	150	154
CWST $83.78
1	—	56.5%	2.40	0.20	3.90	90.00	—	—	—	—	—	—
150	—	43.5%	0.74	0.70	1.40	95.00	—	—	—	—	—	—
2	1	54.2%	0.85	0.00	1.45	100.00	—	—	—	—	—	—
1	—	55.5%	0.90	0.00	0.95	105.00	—	—	—	—	—	—

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 CWST put/call ratio?

For the November 20, 2026 expiration, the CWST put/call ratio based on open interest is 2.42 (378 puts vs 156 calls), and 76.00 based on today's volume. A ratio above 1 means more puts than calls.

What is CWST's implied volatility?

At-the-money implied volatility for CWST options expiring November 20, 2026 is about 56.4%, an annualized estimate of how much the market expects Casella Waste Systems stock to move.

How many CWST option expiration dates are there?

CWST has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 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.