Key Takeaways:
The SEC's subpoenas to four Wall Street banks mark the most significant regulatory intervention yet into the near-collapse of a $30 billion AI hedge fund.
The Securities and Exchange Commission has subpoenaed Bank of America, Citigroup, Goldman Sachs, and JPMorgan Chase for records tied to Situational Awareness, the AI-focused hedge fund that lost 67 percent of its portfolio value in July, the New York Times reported Monday, citing three people briefed on the outreach.
"It is to be expected that regulators would closely examine any funds that are high profile, produce significant returns or have particularly dramatic drawdowns," a Situational Awareness spokesman said. "We are a highly regulated business and will cooperate to the fullest extent with any regulatory request."
The subpoenas seek details on the timing of the fund's trades and its communications with lenders about borrowed capital, with preservation orders instructing all four banks to retain related information. The fund, founded in 2024 by former OpenAI researcher Leopold Aschenbrenner, managed more than $30 billion while borrowing tens of billions more at roughly four-to-one leverage. Its two largest public positions — a $5.7 billion stake in SanDisk and $5.6 billion in Micron — fell 47 percent and 29 percent respectively in July, triggering margin calls and a forced sale of the $16 billion public equity book to Citadel at a roughly 10 percent discount.
The probe echoes the SEC's scrutiny of the 2021 Archegos Capital collapse, where Morgan Stanley, Goldman Sachs, and Wells Fargo settled a $120 million conflict-of-interest lawsuit in July 2025. The core question regulators are examining: whether banks that served simultaneously as lenders, margin-call issuers, and sale facilitators managed those conflicting roles in a way that served fund investors rather than their own balance-sheet interests.
Goldman Sachs, JPMorgan Chase, and Bank of America each provided prime brokerage financing to Situational Awareness, extending billions in borrowed capital against AI infrastructure positions. When those positions declined, the same three banks issued the margin calls that forced the liquidation. The sale itself routed to Citadel — an institution with which each prime broker maintains substantial commercial relationships — and the block-trade unwind of nearly 100 trades worth more than $4 billion was executed through the same banking infrastructure that had extended the loans.
Citigroup, named in the subpoenas alongside the three prime brokers, does not appear to have served as prime broker in the same capacity; its specific role remains less clearly defined in available reporting.
The structural conflict mirrors Archegos, where the same banks served as prime brokers, margin-call issuers, and underwriters for a ViacomCBS offering that the collapse destabilized. Under FINRA Rule 4210 portfolio margin, institutional clients calculate leverage against the overall risk profile of their portfolio rather than position-by-position, allowing leverage ratios far above the two-to-one ceiling that Regulation T imposes on retail investors. Situational Awareness operated at approximately four-to-one leverage — meaning a 25 percent decline in underlying positions mathematically eliminated 100 percent of investor equity.
One of the most consequential structural decisions Situational Awareness made was holding a private company stake alongside a leveraged public equity portfolio. The fund retains a $5 billion Anthropic position, acquired when the AI safety company was valued at approximately $60 billion. That stake survived the margin-call cascade intact because prime brokers extend credit against public securities with observable daily prices — a private stake has no price feed against which a maintenance threshold can be set.
Anthropic is targeting an IPO as early as October at a valuation of up to $2 trillion, after raising a Series H round in May 2026 at a post-money valuation of $965 billion led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia. The fund's survival as a private investment vehicle — holding the Anthropic stake alongside smaller positions in chipmaker MatX and data center startup Fluidstack — represents a structural transformation from leveraged public-markets fund to concentrated growth-equity vehicle.
There is an unusual personal dimension to that lifeline. Aschenbrenner is engaged to Avital Balwit, chief of staff to Anthropic CEO Dario Amodei. The relationship does not create any disclosed legal or financial obligation but is part of the context in which the fund's survival path is being interpreted.
The SEC's inquiry remains at its earliest stages, with no party accused of wrongdoing and no guarantee of enforcement action. Securities law experts note that subpoenas are instruments of information-gathering, not accusation. But the probe signals that prime brokerage relationships financing concentrated AI-sector positions are now subject to active regulatory scrutiny — not only for the fund that collapses but for the banks that financed, called, and helped liquidate it.
Hedge fund AI leverage intensified significantly in 2026, with funds layering leverage across equity relative value, macro, and technology long-short strategies. The Financial Stability Board documented in 2024 that when prime brokers share substantial client overlap, margin calls become procyclical: each bank's decision to tighten terms reinforces pressure on shared clients, producing correlated forced selling.
For institutional investors whose managers use similar leverage structures, the investigation raises a pointed question: in a drawdown scenario, who issues the margin call, who facilitates the sale, and are those the same institutions? For Aschenbrenner, the regulatory aftermath arrives while his fund's survival depends on a single private-company position whose value will be determined by public markets within weeks. His essay predicted AI infrastructure would be the defining investment of the decade. The episode has already clarified something his essay did not account for: a thesis, however accurate, cannot survive unlimited leverage when markets move in the wrong direction.
This article is for informational purposes only and does not constitute investment advice.
