Hema ParmarAug 6, 2026 – 2.38pmNew York | Just days after his hedge fund was on the brink of collapse, Leopold Aschenbrenner has made his return to the investing scene, plunking down $US400 million ($567 million) to back a privately held company, according to people familiar with the matter.The investment, completed on Wednesday AEST, was the first sign of how Aschenbrenner intends to pick up the pieces of his Situational Awareness after it nearly buckled under a barrage of margin calls from lenders across Wall Street last week.BloombergSubscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles