Archegos Capital Collapse

The spectacular collapse of Bill Hwang’s family office Archegos Capital Management in March 2021 represents one of the largest trading losses in financial history, resulting from highly leveraged equity positions that triggered massive forced selling when stock prices declined below maintenance margins.

Hwang, previously banned from Hong Kong trading for insider dealing, operated Archegos as a family office managing approximately $36 billion in assets through complex derivatives called total return equity swaps, which allowed the fund to control far larger positions than its capital base would suggest while avoiding public disclosure requirements that apply to traditional stock ownership.

The fund concentrated heavily in media and technology stocks including ViacomCBS, Discovery, Baidu, and Tencent Music, using borrowed money to amplify potential returns. When ViacomCBS shares fell sharply in late March 2021 following a secondary stock offering, prime brokers including Credit Suisse, Nomura, Goldman Sachs, and Morgan Stanley issued margin calls demanding additional collateral.

Unable to meet these demands, Archegos faced forced liquidation of its positions over several days, creating a cascading effect as massive selling pressure drove target stock prices down further, requiring additional sales to satisfy margin requirements. The unwinding process ultimately eliminated virtually all of Archegos’s capital and imposed losses exceeding $10 billion on participating banks.

A federal jury convicted Hwang in July 2024 on charges that included securities fraud and market manipulation. He received an 18-year prison sentence that November. The collapse prompted regulatory discussions about enhanced oversight of family offices and the systemic risks posed by concentrated, leveraged positions in equity derivatives markets.