Ero Copper (ERO) Options Chain

NYSE: EROBasic MaterialsMetal MiningUSD

37.61+1.63 (+4.53%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $37.61
Put/call ratio (OI): 0.12
Put/call ratio (volume): 0.22
ATM implied volatility: 59.6%
Expected move: ±$9.68
Open interest (C / P): 5.31K / 637

ERO options summary

The ERO options chain for the December 18, 2026 expiration lists 10 call and 10 put contracts, with 68 days until expiration. Open interest stands at 5,308 calls and 637 puts, a put/call ratio of 0.12, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $40.00 strike is 59.6%, which implies the market expects a move of about ±$9.68 (25.7%) in Ero Copper stock by expiration.

The most open interest sits at the $40.00 call (3.28K contracts) and the $35.00 put (191 contracts).

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

ERO options chain · December 18, 2026

ERO 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
1	—	230.2%	14.37	24.50	28.40	12.50	—	—	—	—	—	—
—	—	—	—	—	—	15.00	0.00	0.05	0.05	89.1%	2	0
—	—	—	—	—	—	17.50	0.00	0.35	0.10	101.0%	3	28
2	1	109.8%	17.88	16.50	19.80	20.00	0.00	0.60	0.35	95.3%	1	48
16	1	92.7%	13.17	14.20	17.10	22.50	0.00	0.60	0.30	80.1%	1	39
60	10	75.2%	9.70	12.60	13.60	25.00	0.15	0.50	0.52	67.6%	1	73
125	25	64.4%	8.88	8.50	8.90	30.00	0.75	1.15	0.95	60.9%	22	156
365	6	65.2%	5.56	5.10	5.90	35.00	2.35	2.75	2.75	59.5%	10	191
ERO $37.61
3,276	65	62.5%	3.40	2.65	3.50	40.00	4.70	5.50	5.50	56.8%	1	83
983	20	62.1%	1.75	1.20	2.10	45.00	8.30	9.40	9.20	58.7%	1	13
431	65	61.4%	0.65	0.55	1.10	50.00	—	—	—	—	—	—
49	1	66.9%	0.64	0.30	0.85	55.00	16.60	18.70	17.00	55.6%	—	6

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 ERO put/call ratio?

For the December 18, 2026 expiration, the ERO put/call ratio based on open interest is 0.12 (637 puts vs 5,308 calls), and 0.22 based on today's volume. A ratio above 1 means more puts than calls.

What is ERO's implied volatility?

At-the-money implied volatility for ERO options expiring December 18, 2026 is about 59.6%, an annualized estimate of how much the market expects Ero Copper stock to move.

How many ERO option expiration dates are there?

ERO 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.