CWST Open Interest
Casella Waste Systems Inc (CWST) had 1.25K open option contracts as of Nov 4, 2026: 778 calls and 472 puts. Open interest rose 82.7% over the past four weeks, and is CWST's highest level in 12 weeks. The put/call open interest ratio is 0.61, so calls outnumber puts.
Open Interest by Strike
Showing results for CWST, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CWST, 2026-11-20(m), calls & puts
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Highest Open Interest Options
Showing results for CWST, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CWST, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CWST, all expirations, calls & puts. View full history
CWST Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does CWST have?
Casella Waste Systems had 1.25K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 952 contracts.
Is CWST open interest rising or falling?
Open interest rose 82.7% over the past four weeks, and is CWST's highest level in 12 weeks. It was 684 contracts on Oct 7, 2026. See the CWST open interest history for a longer view.
What is the CWST put/call open interest ratio?
The Casella Waste Systems put/call open interest ratio was 0.61 as of Nov 4, 2026. Four weeks earlier it was 1.74.
What is Casella Waste Systems Inc?
Casella Waste Systems Inc is a solid waste removal company, providing resource management services to residential, commercial, municipal, and industrial customers.