SPGI Options Chain Analysis

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

Spot $386.59 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

1.35

17k P / 13k C

Put/Call (Volume)

1.57

2k P / 1k C that session

30d ATM IV

29%

annualized implied move

Call wall

$410

1k contracts

Put wall

$380

2k contracts

Tail hedging

0.3×

deep-OTM puts vs calls

What the positioning says

●Defensive positioning: 1.35 puts outstanding per call — holders are hedging rather than selling.
●Call wall at $410 (1k contracts), 6% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $380 (2k contracts), 2% below spot — the hedge floor; often acts as support.
●Deep-OTM call OI is 3.7× 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 2026-10-30. 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
2026-10-09	804	1k	1.37	529
2026-10-16	3k	4k	1.42	232
2026-10-23	446	1k	2.42	99
2026-10-30	137	2k	11.36	228
2026-11-06	70	144	2.06	43
2026-11-13	0	5	—	207
2026-11-20	1k	2k	1.49	262
2026-12-18	1k	898	0.77	124
2027-01-15	1k	2k	1.47	127
2027-02-19	144	277	1.92	51
2027-03-19	482	498	1.03	47
2027-05-21	8	12	1.50	3
2027-06-17	368	838	2.28	41
2027-09-17	82	198	2.41	72
2027-12-17	434	204	0.47	9
2028-01-21	892	580	0.65	257
2029-01-19	75	40	0.53	25

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.