Transportadora de Gas del Sur SA TGS (TGS) Options Chain

NYSE: TGSUtilitiesNatural Gas DistributionUSD

25.71-0.68 (-2.58%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $25.71
Put/call ratio (OI): 4.85
Put/call ratio (volume): 24.14
ATM implied volatility: 49.8%
Expected move: ±$6.57
Open interest (C / P): 681 / 3.30K

TGS options summary

The TGS options chain for the January 15, 2027 expiration lists 8 call and 8 put contracts, with 96 days until expiration. Open interest stands at 681 calls and 3,300 puts, a put/call ratio of 4.85, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $25.00 strike is 49.8%, which implies the market expects a move of about ±$6.57 (25.5%) in Transportadora de Gas del Sur SA TGS stock by expiration.

The most open interest sits at the $45.00 call (244 contracts) and the $22.50 put (1.97K contracts).

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

TGS options chain · January 15, 2027

TGS 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
105	2	178.2%	16.72	11.90	15.40	15.00	0.00	0.00	0.35	25.0%	—	0
167	4	151.5%	12.18	9.90	12.90	17.50	0.00	0.75	0.17	62.0%	3	110
17	6	125.1%	10.02	7.50	10.60	20.00	—	—	—	—	—	—
0	2	—	9.36	0.00	0.00	22.50	0.35	1.10	0.60	48.0%	50	1,968
—	—	—	—	—	—	25.00	0.75	2.25	1.35	49.8%	1,950	1,133
TGS $25.71
46	8	56.1%	0.95	0.40	1.50	30.00	0.00	0.00	3.92	—	1	0
102	50	59.4%	0.20	0.00	0.75	35.00	0.00	0.00	8.60	—	—	0
0	—	25.0%	1.80	0.00	0.00	40.00	10.10	13.10	11.58	—	2	89
244	13	103.0%	0.40	0.00	2.65	45.00	14.90	18.40	14.10	—	46	0

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 TGS put/call ratio?

For the January 15, 2027 expiration, the TGS put/call ratio based on open interest is 4.85 (3,300 puts vs 681 calls), and 24.14 based on today's volume. A ratio above 1 means more puts than calls.

What is TGS's implied volatility?

At-the-money implied volatility for TGS options expiring January 15, 2027 is about 49.8%, an annualized estimate of how much the market expects Transportadora de Gas del Sur SA TGS stock to move.

How many TGS option expiration dates are there?

TGS has 5 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.