TGS Q2 2026: Real Transport EBITDA Stabilizes as NGLs Drive Growth

What happened

TGS's Q2 2026 earnings call revealed that regulated natural gas transportation EBITDA was essentially flat in real terms year-on-year, arresting the prior erosion as CPI/IPIM indexation and cost controls took hold. The company's liquids and midstream segments sustained mid-teens EBITDA growth, fueled by strong NGL export pricing and rising Vaca Muerta conditioning volumes. Management confirmed that the Perito Moreno pipeline expansion remains on track for a winter 2027 in-service, with 14 MMm³/d of capacity reservation contracts largely secured. Despite this operational progress, executives cautioned that social resistance to utility tariff hikes and a contentious political environment could still challenge the indexation framework. The overall result marks a critical step toward validating the bull case, but the investment thesis still requires consistent multi-quarter evidence of real margin durability.

Implication

The Q2 2026 print provides the first concrete evidence that the regulated segment can hold margins in real terms under the current formula, reducing the downside risk that kept us at WAIT. Liquids and midstream continue to generate outsized profits, and the Perito Moreno expansion adds visible contracted growth from 2027. However, Argentina's political dynamics mean that indexation could still be suspended, and a repeat of the Cerri flood or NGL market dislocation would hurt. We raise our conviction from 3.5 to 4.0 and our base case implied value to $34, but we'd wait for a pullback to $28–$30 before adding aggressively. The thesis delta is that the bear case probability has declined from 25% to 20% as real margin stabilization becomes less of a hypothetical.

Thesis delta

The Q2 2026 results are the first to show real transport EBITDA flattening out, undermining the bear case that indexation alone can't offset CPI pressures. This tilts our view from a guarded WAIT to a cautious ACCUMULATE on dips, though full bull conviction would require two more quarters of stable real margins and no adverse policy shifts.