RIO Options Chain Analysis

Delayed CBOE data, snapshot 2026-08-18. Spot $96.75.

Put/Call (OI)

0.94

66k P / 70k C

Put/Call (Volume)

0.62

769 P / 1k C today

30d ATM IV

29%

annualized implied move

Call wall

$105

10k contracts

Put wall

$90

11k contracts

Tail hedging

1.1×

deep-OTM puts vs calls

What the positioning says

●Call wall at $105 (10k contracts), 9% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $90 (11k contracts), 7% below spot — the hedge floor; often acts as support.

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 2026-09-18. A steep left side = expensive downside protection.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume today
2026-08-21	5k	15k	3.13	573
2026-09-18	17k	23k	1.37	460
2026-10-16	9k	4k	0.48	176
2026-12-18	7k	5k	0.70	158
2027-01-15	23k	13k	0.57	469
2027-03-19	3k	2k	0.62	5
2027-06-17	1k	713	0.71	102
2028-01-21	6k	3k	0.59	62

Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.