STX Options Chain Analysis

As of previous close (2026-10-27) · OPRA historical data

Spot $667.94 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

1.35

183k P / 135k C

Put/Call (Volume)

0.70

26k P / 37k C that session

30d ATM IV

67%

annualized implied move

Call wall

$1,100

7k contracts

Put wall

$200

7k contracts

Tail hedging

1.4×

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 $1,100 (7k contracts), 65% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $200 (7k contracts), 70% below spot — the hedge floor; often acts as support.
●30-day ATM implied volatility is 67% — 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 2026-11-27. A steep left side = expensive downside protection.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-10-30	28k	13k	0.47	35k
2026-11-06	5k	5k	1.02	3k
2026-11-13	1k	3k	2.16	1k
2026-11-20	25k	26k	1.02	16k
2026-11-27	979	2k	1.57	842
2026-12-04	421	121	0.29	656
2026-12-18	14k	17k	1.16	2k
2027-01-15	24k	35k	1.45	2k
2027-03-19	10k	17k	1.73	632
2027-06-17	11k	24k	2.29	659
2027-09-17	2k	3k	2.04	63
2028-01-21	12k	37k	3.03	846
2029-01-19	2k	2k	0.96	215

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.