Archegos Capital Collapse
The Archegos Capital collapse of March 2021 was a forced liquidation event in which the implosion of a family office's highly leveraged positions in a concentrated set of stocks caused over $10 billion in losses at major global banks and triggered sharp declines in the affected stocks.
Archegos Capital Management was a family office — a private investment vehicle managing the personal wealth of its founder — run by Bill Hwang, a former hedge fund manager who had previously worked for Julian Robertson's Tiger Management. Hwang had been barred from managing public funds following an insider trading settlement in 2012, but as a family office managing only personal and family capital, Archegos operated with far less regulatory oversight than a conventional hedge fund.
Archegos had accumulated enormous concentrated positions in a small number of stocks, including ViacomCBS, Discovery, GSX Techedu, and several other media and technology companies. Rather than buying shares directly — which would have required disclosure once holdings exceeded 5% of a company's shares — Archegos built its positions primarily through total return swaps with multiple prime brokers including Goldman Sachs, Morgan Stanley, Credit Suisse, and Nomura. In a total return swap, the bank holds the underlying shares while the client receives exposure to gains and losses and pays a financing cost. This structure allowed Archegos to build enormous positions without appearing in any public ownership filings.
By early 2021, estimates suggested Archegos had total exposure — through both direct shares and swaps — approaching $100 billion, with equity of perhaps $10 to $20 billion — leverage of roughly 5 to 8 times. When ViacomCBS announced a secondary share offering in late March 2021, its stock began to decline. The decline triggered margin calls from prime brokers. When Archegos could not meet them, the banks began selling the underlying positions.
The liquidation was chaotic. Goldman Sachs and Morgan Stanley moved quickly, selling large blocks of stock in after-hours markets before other prime brokers had coordinated. Credit Suisse and Nomura moved more slowly, suffering losses estimated at $4.7 billion and $2 billion respectively. The forced selling caused the stocks involved to fall 40 to 70% within days.
The episode exposed a significant regulatory gap: the total return swap structure had allowed Archegos to build systemically relevant positions completely hidden from regulators and other market participants. It led to calls for greater transparency in synthetic equity exposures and tighter oversight of prime brokerage leverage to family offices.