Casella Waste Systems (CWST) Options Chain
NASDAQ: CWSTUtilitiesEnvironmental ServicesUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 68
- Share price
- $83.78
- Put/call ratio (OI)
- 0.63
- Put/call ratio (volume)
- 0.37
- Expected move
- ±$14.42
- Open interest (C / P)
- 56 / 35
CWST options summary
The CWST options chain for the December 18, 2026 expiration lists 11 call and 8 put contracts, with 68 days until expiration. Open interest stands at 56 calls and 35 puts, a put/call ratio of 0.63, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $85.00 strike is 39.9%, which implies the market expects a move of about ±$14.42 (17.2%) in Casella Waste Systems stock by expiration.
The most open interest sits at the $45.00 call (14 contracts) and the $80.00 put (8 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CWST options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 51.80 | 48.10 | 52.30 | 45.00 | — | — | — | |||||
| — | — | — | 60.00 | 0.00 | 2.45 | 0.23 | |||||
| 25.40 | 0.00 | 0.00 | 65.00 | 0.00 | 2.85 | 0.65 | |||||
| — | — | — | 70.00 | 0.00 | 3.30 | 1.75 | |||||
| 21.02 | 9.60 | 13.00 | 75.00 | 0.75 | 3.80 | 1.60 | |||||
| 8.08 | 7.40 | 8.50 | 80.00 | 2.00 | 4.80 | 3.48 | |||||
| 4.75 | 3.50 | 6.70 | 85.00 | 2.00 | 5.00 | 5.66 | |||||
| 11.20 | 11.40 | 15.60 | 90.00 | 6.60 | 10.20 | 5.52 | |||||
| 4.00 | 0.00 | 2.20 | 100.00 | 0.00 | 0.00 | 16.00 | |||||
| 1.70 | 0.00 | 1.80 | 105.00 | — | — | — | |||||
| 1.80 | 0.00 | 2.20 | 110.00 | — | — | — | |||||
| 0.50 | 0.00 | 0.75 | 120.00 | — | — | — | |||||
| 2.53 | 0.00 | 2.95 | 125.00 | — | — | — | |||||
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 December 18, 2026 expiration, the CWST put/call ratio based on open interest is 0.63 (35 puts vs 56 calls), and 0.37 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 December 18, 2026 is about 39.9%, 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.