CLS Options Chain Analysis

As of previous close (2026-10-01) · OPRA historical data

Spot $370.63 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.64

50k P / 78k C

Put/Call (Volume)

0.45

2k P / 4k C that session

30d ATM IV

78%

annualized implied move

Call wall

$400

8k contracts

Put wall

$270

4k contracts

Tail hedging

1.4×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.64 puts per call outstanding.
●Call wall at $400 (8k contracts), 8% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $270 (4k contracts), 27% below spot — the hedge floor; often acts as support.
●30-day ATM implied volatility is 78% — the market prices very large moves; option premium is expensive.

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 2026-10-30. A steep left side = expensive downside protection.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-10-02	5k	4k	0.86	2k
2026-10-09	3k	5k	1.62	715
2026-10-16	16k	6k	0.40	1k
2026-10-23	1k	2k	1.85	188
2026-10-30	685	2k	2.31	390
2026-11-06	457	435	0.95	297
2026-11-13	0	0	—	8
2026-11-20	15k	5k	0.30	587
2026-12-18	9k	3k	0.38	150
2027-01-15	14k	12k	0.83	123
2027-02-19	1k	3k	2.37	66
2027-03-19	3k	2k	0.68	49
2027-05-21	2k	1k	0.46	38
2027-06-17	602	1k	2.25	165
2027-08-20	1k	415	0.37	6
2027-11-19	1k	472	0.47	4
2028-01-21	4k	3k	0.62	31
2029-01-19	206	156	0.76	6

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.