Archegos, 2021

One family office, five prime brokers, and a position none of them could see in full — until the race to sell began.

What happened

  • 2020–early 2021 — Archegos, the family office of Bill Hwang, builds enormous concentrated positions in a handful of media and Chinese technology stocks.
  • The structure — most exposure is held through total return swaps with several prime brokers rather than as shares. The bank owns the stock; the client owns the economics.
  • Each broker sees only its own book. None knows the aggregate size, and swap positions do not trigger the disclosure thresholds that direct shareholdings would.
  • Late March 2021 — a large secondary offering in one holding knocks the share price. Margin calls follow, and Archegos cannot meet them.
  • 26 March 2021 onward — the brokers race to liquidate. The fastest escape; the slowest do not. Credit Suisse reports roughly $5.5bn of losses, Nomura around $2.9bn.

The mechanism

  • Swaps rebuild ownership as financing. The client gets the price exposure and dividends, pays a financing rate, and posts margin — with no share register entry anywhere.
  • Leverage was multiplied by fragmentation: modest leverage at each of five brokers becomes extreme leverage in aggregate, invisible to all of them.
  • Concentration removed the exit. The positions were large relative to each stock's daily volume, so liquidation itself crushed the price — the losses were partly manufactured by the unwind.
  • Margin was counterparty-blind: each bank's risk model assessed its own exposure against a client it believed to be one of several similar relationships.

What it teaches

  • Ask who else finances this client. Counterparty risk is a function of the whole balance sheet, not the part you can see.
  • Position size relative to liquidity is a risk factor of its own — a portfolio you cannot exit in a week is not really marked at the screen price.
  • Disclosure regimes lag instruments. Regulators subsequently moved to close the swap-disclosure gap; that gap existed because the rules were written for shares.
  • In a liquidation race, speed beats analysis. The banks that moved first lost least, which is itself a reason such races are destructive.