Shares of Argentine oil producer Vista Energy rose in premarket trading Monday after a regulatory filing revealed that billionaire investor Peter Thiel’s hedge fund had acquired a stake in the company, adding to growing investor interest in Argentina’s rapidly expanding shale industry.
Thiel Macro LLC held nearly 1.2 million American depositary shares of Vista Energy worth about $76 million as of June 30, according to a U.S. Securities and Exchange Commission filing published Friday. Vista shares were last up 5.4% in premarket trading.
The investment was Thiel Macro’s second-largest disclosed position at the end of the second quarter, behind Amazon, in which the fund held about 495,000 shares valued at roughly $118 million.
Register for the next Tekedia Mini-MBA.
Register for Tekedia AI in Business Masterclass.
Join Tekedia Capital Syndicate and co-invest in great global startups.
The filing also showed a broader shift toward energy and utilities. Six of the fund’s seven newly disclosed positions were in the sector, including American Electric Power, DTE Energy, FirstEnergy, CMS Energy, Vistra and X-Energy.
The concentration of new investments in energy-related companies suggests Thiel Macro is increasing its exposure to power generation, electricity infrastructure and energy production at a time when rising electricity demand from data centers and artificial intelligence is reshaping the investment outlook for the sector.
Vista, Argentina’s largest independent oil and gas producer, is focused on the Vaca Muerta shale formation, one of the world’s most significant undeveloped oil and gas resources. The company has invested more than $6.5 billion in Argentina as it expands production from the formation.
The investment also carries a clear connection to Argentina for Thiel.
Thiel recently moved with his family to Buenos Aires, where he purchased a mansion. Since arriving in Argentina in April, he has met senior officials in President Javier Milei’s administration, including Economy Minister Luis Caputo, Deregulation Minister Federico Sturzenegger and presidential adviser Santiago Caputo.
Thiel also met Milei earlier this year.
Milei has pursued sweeping economic reforms aimed at reducing state intervention, attracting foreign capital and expanding private investment in Argentina’s natural resources. The government has identified oil and gas, lithium and other mineral resources as important areas for attracting international investment and increasing exports.
Vaca Muerta is central to that aim.
Argentina has sought to increase oil and gas production from the formation to strengthen energy exports, generate foreign currency and reduce the country’s reliance on energy imports. Improved infrastructure and investment have helped unlock more of the formation’s potential, although transport capacity and other infrastructure remain important constraints on how quickly production can expand.
For Vista, Thiel’s investment provides a high-profile endorsement at a time when international investors are increasingly examining Argentina’s energy assets as the country’s economic policy shifts toward greater market liberalization.
The timing also matters because Thiel’s fund is not making an isolated bet on oil. Its newly disclosed holdings span electricity utilities, power generation and energy technology, giving the portfolio exposure to several parts of an energy market undergoing structural change.
The combination of AI-driven electricity demand, growing investment in power infrastructure and Argentina’s efforts to expand its energy exports has made the sector particularly attractive to investors seeking long-term growth opportunities.
Vista’s position in Vaca Muerta gives Thiel Macro direct exposure to that Argentine energy story.
The investment does not necessarily indicate that Thiel personally directed the purchase or that he plans additional investments in Argentina. But it adds to the significance of his recent move to Buenos Aires and his meetings with senior government officials.
For Milei’s administration, high-profile investments by foreign billionaires and institutional investors can also serve as a signal that Argentina’s efforts to attract capital are gaining attention beyond traditional emerging-market investors.
Vista’s immediate market reaction shows how closely investors are watching the company. Its shares had already benefited from expectations for continued growth in Vaca Muerta, and the disclosure of Thiel Macro’s position has added another layer of attention to the stock.