ECL Options Chain Analysis

As of previous close (2026-10-02) · OPRA historical data

Spot $274.19 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.32

4k P / 14k C

Put/Call (Volume)

1.21

52 P / 43 C that session

30d ATM IV

26%

annualized implied move

Call wall

$300

5k contracts

Put wall

$260

1k contracts

Tail hedging

0.4×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.32 puts per call outstanding.
●Call wall at $300 (5k contracts), 9% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $260 (1k contracts), 5% below spot — the hedge floor; often acts as support.
●Deep-OTM call OI is 2.4× deep-OTM put OI — speculative upside positioning dominates the tails.

Open interest by strike

All expiries combined. Amber lines mark the call and put walls; the dashed line is spot.

IV term structure

At-the-money implied volatility per expiry.

Volatility smile

IV by strike — expiry 2026-10-16. A steep left side = expensive downside protection.

30-day implied volatility history

Daily ATM IV (~30 DTE bucket) collected since March 2026. Rising IV into an event = the market bracing; collapsing IV after = the crush.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-10-16	8k	3k	0.34	16
2026-11-20	797	439	0.55	51
2026-12-18	3k	759	0.26	14
2027-01-15	2k	432	0.23	14
2027-04-16	283	31	0.11	0
2028-01-21	51	5	0.10	0
2029-01-19	1	0	0.00	0

Source: Cboe end-of-session option chains, summarized after each US market close and published from the following trading day — OPRA historical data. Under the OPRA plan options data becomes historical, and freely publishable, at the opening of the next trading session; data from the session in progress is never displayed or served here. Open interest is exchange-reported once a day. Research, not investment advice.