Comp En De Mn Cemig (CIG) Options Chain

NYSE: CIGUtilitiesElectric Utilities: CentralUSD

2.40+0.04 (+1.69%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $2.40
Put/call ratio (OI): 0.04
Put/call ratio (volume): 0.02
ATM implied volatility: 34.0%
Expected move: ±$0.3521
Open interest (C / P): 1.97K / 81

CIG options summary

The CIG options chain for the December 18, 2026 expiration lists 7 call and 6 put contracts, with 68 days until expiration. Open interest stands at 1,971 calls and 81 puts, a put/call ratio of 0.04, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.50 strike is 34.0%, which implies the market expects a move of about ±$0.3521 (14.7%) in Comp En De Mn Cemig stock by expiration.

The most open interest sits at the $2.50 call (1.22K contracts) and the $2.00 put (79 contracts).

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

CIG options chain · December 18, 2026

CIG 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	1	50.0%	1.75	1.40	2.40	0.50	0.00	0.00	0.03	50.0%	2	0
12	10	196.9%	1.15	0.75	1.50	1.00	0.00	0.00	0.03	50.0%	2	0
1	1	78.1%	0.85	0.55	1.30	1.50	0.00	0.05	0.03	78.1%	1	1
732	237	66.4%	0.34	0.20	0.80	2.00	0.00	0.10	0.05	66.4%	1	79
CIG $2.40
1,215	111	34.0%	0.05	0.05	0.10	2.50	0.00	0.00	0.60	—	1	0
9	2	98.4%	0.03	0.00	0.05	5.00	2.40	3.40	2.65	195.7%	1	1
2	—	154.7%	0.01	0.00	0.10	7.50	—	—	—	—	—	—

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 CIG put/call ratio?

For the December 18, 2026 expiration, the CIG put/call ratio based on open interest is 0.04 (81 puts vs 1,971 calls), and 0.02 based on today's volume. A ratio above 1 means more puts than calls.

What is CIG's implied volatility?

At-the-money implied volatility for CIG options expiring December 18, 2026 is about 34.0%, an annualized estimate of how much the market expects Comp En De Mn Cemig stock to move.

How many CIG option expiration dates are there?

CIG has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.

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.