RIO Options Chain Analysis

As of previous close (2026-10-21) · OPRA historical data

Spot $87.66 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.85

48k P / 57k C

Put/Call (Volume)

1.20

2k P / 1k C that session

30d ATM IV

28%

annualized implied move

Call wall

$115

7k contracts

Put wall

$85

7k contracts

Tail hedging

0.4×

deep-OTM puts vs calls

What the positioning says

●Call wall at $115 (7k contracts), 31% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $85 (7k contracts), 3% below spot — the hedge floor; often acts as support.
●Deep-OTM call OI is 2.6× 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 2026-11-20. A steep left side = expensive downside protection.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-11-20	5k	9k	1.80	2k
2026-12-18	13k	13k	1.01	641
2027-01-15	26k	15k	0.59	359
2027-03-19	4k	4k	0.90	111
2027-04-16	101	660	6.53	107
2027-06-17	1k	1k	0.70	33
2027-09-17	198	955	4.82	108
2028-01-21	6k	4k	0.69	89
2029-01-19	187	57	0.30	18

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.