Billionaire investor Peter Thiel has added a minority stake in Vista Energy (NYSE:VIST), acquiring approximately 1% of the company through Thiel Macro LLC, according to a US Securities and Exchange Commission filing made public on Friday.
The filing shows Thiel Macro purchased roughly 1.2 million of Vista's American depositary shares for about $76 million. That holding is reported to be about 1% of Vista's outstanding capital.
The move follows a meeting four months earlier between Thiel and Argentine President Javier Milei at the presidential palace in Buenos Aires. Local reporting indicates the two discussed economic policy and shared opposition to wealth taxes. Separate local reports have also said Thiel recently acquired a mansion in an affluent Buenos Aires neighborhood.
Vista is one of the largest oil producers operating in Argentina's Vaca Muerta shale formation. The company produces about 160,000 barrels of oil equivalent per day and has invested more than $6.5 billion in Argentina. In May, Vista raised its investment and production outlook for its operations in Vaca Muerta.
Vaca Muerta sits in Neuquén province in Argentina's Patagonia region and is described in company reporting as roughly the size of Belgium. The formation holds significant hydrocarbon resources, identified in the filing as the world's second-largest shale gas reserves and the fourth-largest shale oil reserves. Those resources are central to Argentina's plans to boost energy production and expand exports.
Thiel Macro's SEC filing also discloses the fund's broader portfolio value at $418.7 million. The filing lists other holdings including Vistra (NYSE:VST), Amazon (NASDAQ:AMZN), American Electric Power (NASDAQ:AEP), DTE Energy (NYSE:DTE), FirstEnergy (NYSE:FE), CMS Energy (NYSE:CMS) and nuclear reactor developer X-energy. The portfolio composition, the filing notes, points to a broader focus on energy and electricity demand alongside the Vista investment.
Separately, the filing and accompanying reporting note Thiel's role outside the portfolio: he is the chairman and co-founder of data analytics company Palantir Technologies (NASDAQ:PLTR).
The SEC filing provides the concrete details of the transaction and a snapshot of Thiel Macro's holdings, but it does not include commentary on the strategic intent behind the purchase or any planned changes to Vista's governance. Likewise, the filing does not quantify any expected operational changes to Vista's development of Vaca Muerta beyond the company's own previously stated investment and production outlook.
Context and market relevance
The transaction links a high-profile investor with one of Argentina's leading shale operators as Vista expands its footprint in Vaca Muerta. The filing and associated reports also highlight intersections between energy investment and broader political and infrastructure debates in Argentina, including discussions about economic policy and the potential for new power demand from projects such as data centers.