CLH Open Interest
Clean Harbors Inc (CLH) had 2.32K open option contracts as of Nov 4, 2026: 844 calls and 1.48K puts. Open interest rose 73.3% over the past four weeks, and is CLH's highest level in 4 weeks. The put/call open interest ratio is 1.75, so puts outnumber calls.
Open Interest by Strike
Showing results for CLH, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CLH, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for CLH, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CLH, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CLH, all expirations, calls & puts. View full history
CLH 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 CLH have?
Clean Harbors had 2.32K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 1.37K contracts.
Is CLH open interest rising or falling?
Open interest rose 73.3% over the past four weeks, and is CLH's highest level in 4 weeks. It was 1.34K contracts on Oct 7, 2026. See the CLH open interest history for a longer view.
What is the CLH put/call open interest ratio?
The Clean Harbors put/call open interest ratio was 1.75 as of Nov 4, 2026. Four weeks earlier it was 0.52.
What is Clean Harbors Inc?
Clean Harbors Inc is an environmental and industrial services provider that provides parts cleaning and related environmental services to commercial, industrial, and automotive customers.