Rio Tinto Plc (RIO) Options Chain

NYSE: RIOBasic MaterialsMetal MiningUSD

94.78+1.44 (+1.54%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $94.78
Put/call ratio (OI): 0.96
Put/call ratio (volume): 0.69
ATM implied volatility: 30.4%
Expected move: ±$12.44
Open interest (C / P): 11.51K / 11.11K

RIO options summary

The RIO options chain for the December 18, 2026 expiration lists 33 call and 28 put contracts, with 68 days until expiration. Open interest stands at 11,509 calls and 11,106 puts, a put/call ratio of 0.96, which is fairly balanced between calls and puts. At-the-money implied volatility near the $95.00 strike is 30.4%, which implies the market expects a move of about ±$12.44 (13.1%) in Rio Tinto Plc stock by expiration.

The most open interest sits at the $145.00 call (2.09K contracts) and the $85.00 put (3.15K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

RIO options chain · December 18, 2026

RIO calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
0	10	—	58.20	0.00	0.00	35.00	0.00	0.00	0.05	50.0%	1	0
—	—	—	—	—	—	40.00	0.00	2.15	0.05	134.3%	2	21
—	—	—	—	—	—	42.50	0.00	0.25	0.31	85.2%	3	4
—	—	—	—	—	—	45.00	0.00	0.00	0.15	25.0%	1	0
—	—	—	—	—	—	47.50	0.00	0.00	0.19	25.0%	3	0
0	2	—	47.95	0.00	0.00	50.00	0.00	0.20	0.10	67.2%	1	216
0	230	—	38.10	0.00	0.00	55.00	0.00	0.20	0.20	58.0%	1	264
0	5	—	17.38	23.50	28.50	60.00	0.00	0.25	0.10	51.4%	37	82
0	155	—	36.60	0.00	0.00	62.50	0.00	0.25	0.15	53.1%	3	14
0	185	—	34.10	0.00	0.00	65.00	0.10	0.30	0.15	50.5%	1	116
0	10	—	31.60	0.00	0.00	67.50	0.05	0.35	0.35	47.7%	1	122
0	290	—	28.70	0.00	0.00	70.00	0.15	0.30	0.36	42.0%	5	287
0	1	—	26.10	0.00	0.00	72.50	0.20	0.40	0.55	40.4%	2	401
64	1	54.8%	20.24	19.90	21.50	75.00	0.25	0.55	0.43	39.1%	1	652
0	5	—	21.92	0.00	0.00	77.50	0.45	0.70	0.65	37.1%	1	401
132	1	43.1%	19.45	15.40	16.40	80.00	0.60	0.90	1.38	35.2%	1	371
79	1	42.4%	14.58	13.20	14.40	82.50	0.95	1.15	1.05	33.3%	26	469
273	2	40.0%	10.41	11.20	12.30	85.00	1.40	1.55	1.48	32.0%	551	3,152
72	1	37.1%	9.27	9.40	10.20	87.50	1.80	2.10	2.50	31.1%	2	308
219	4	35.6%	7.20	7.70	8.40	90.00	2.50	2.80	3.25	30.1%	2	830
361	5	33.8%	6.21	6.20	6.70	92.50	3.40	3.70	4.20	29.3%	4	1,029
RIO $94.78
426	13	32.3%	4.29	4.90	5.20	95.00	4.50	4.80	4.81	28.5%	51	657
790	2	32.1%	3.35	3.70	4.10	97.50	5.80	6.20	6.44	28.3%	100	214
1,878	8	31.4%	3.00	2.85	3.10	100.00	7.30	7.80	7.90	28.1%	1	794
825	10	33.8%	1.65	1.50	2.10	105.00	11.20	11.90	12.65	30.6%	1	585
1,894	6	31.7%	0.90	0.75	1.00	110.00	15.10	16.40	16.95	33.5%	5	116
688	1	32.8%	0.50	0.40	0.60	115.00	21.90	26.10	19.52	61.3%	1	1
395	3	35.5%	0.25	0.25	0.45	120.00	—	—	—	—	—	—
652	1	38.0%	0.35	0.05	0.35	125.00	29.60	32.40	21.00	60.8%	1	0
480	90	39.6%	0.10	0.00	0.25	130.00	—	—	—	—	—	—
129	1	43.4%	0.30	0.00	0.25	135.00	—	—	—	—	—	—
0	7	25.0%	0.35	0.00	0.00	140.00	—	—	—	—	—	—
2,088	100	48.5%	0.45	0.00	0.20	145.00	—	—	—	—	—	—
38	6	51.6%	0.08	0.00	0.20	150.00	—	—	—	—	—	—
12	10	59.7%	0.45	0.20	0.50	155.00	—	—	—	—	—	—
9	2	79.2%	1.05	0.05	2.30	160.00	—	—	—	—	—	—
5	3	52.9%	0.05	0.00	0.15	165.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the RIO put/call ratio?

For the December 18, 2026 expiration, the RIO put/call ratio based on open interest is 0.96 (11,106 puts vs 11,509 calls), and 0.69 based on today's volume. A ratio above 1 means more puts than calls.

What is RIO's implied volatility?

At-the-money implied volatility for RIO options expiring December 18, 2026 is about 30.4%, an annualized estimate of how much the market expects Rio Tinto Plc stock to move.

How many RIO option expiration dates are there?

RIO has 10 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.