Ticker data / RIO
RIO options activity and gamma
As of 2026-10-23T20:00:00.000Z, RIO has 83,628 standard-contract open interest across 3 expiries, 1.91% from the dated underlying price to the call wall. OI rank 34 of 113 measured books with the same UTC source date; not a full-market ranking.
RIO last, delayed: $83.41. As of . Source: delayed price. Clock basis: session close.
Gamma estimate by strike
| Strike | Net gamma estimate | Magnitude |
|---|---|---|
| 155 | $0 | |
| 150 | $0 | |
| 145 | $0 | |
| 140 | $0 | |
| 135 | $0 | |
| 130 | $0 | |
| 125 | $0 | |
| 120 | $36,452 | |
| 115 | $182,246 | |
| 110 | $212,969 | |
| 105 | $281,604 | |
| 100 | $227,130 | |
| 97.5 | $169,901 | |
| 95 | $-28,104 | |
| 92.5 | $-111,554 | |
| 90 | $-1,058,433 | |
| 87.5 | $5,201 | |
| 85 | $-1,535,780 | |
| 82.5 | $-130,694 | |
| 80 | $-1,291,630 | |
| 77.5 | $-175,981 | |
| 75 | $-292,959 | |
| 72.5 | $0 | |
| 70 | $-138,499 | |
| 67.5 | $-10,296 | |
| 65 | $-594 | |
| 62.5 | $0 | |
| 60 | $-2,288 | |
| 57.5 | $0 | |
| 55 | $-27,552 | |
| 52.5 | $0 | |
| 50 | $0 | |
| 47.5 | $0 | |
| 45 | $0 | |
| 42.5 | $0 | |
| 40 | $0 | |
| 37.5 | $0 | |
| 35 | $0 | |
| 32.5 | $0 | |
| 30 | $0 |
Call wall: 85. Put wall: 85. This book clears the options activity floor.
Open interest: 83,628 contracts. Session volume: 0. Expiries held: 3. Source: delayed options data, chain as of 2026-10-23 20:00:00 UTC.
Method and data clocks
OI-derived gamma estimate, calls positive and puts negative; 100-share standard roots only; dollars per 1% underlying move. Not observed dealer positions. Full-chain activity; at most 40 nearest gamma strikes. Clock selection: session close. OI settlement date is not supplied by this feed; the chain clock does not establish a settlement date.
Company and sector context
Rio Tinto Plc Common Stock. Basic Materials / Metal Mining. Catalogue checked 2026-10-20 from public issuer and exchange directories.
Sector peers
AEM AG AGI ALM ALOY APD ASM AU Sector context
Historical measurements and modeled gamma describe the saved book. They do not predict price movement.