Which 1998 hedge fund collapse prompted a Federal Reserve-brokered rescue because of systemic risk?

The 1998 hedge fund collapse that prompted a Federal Reserve-brokered rescue because of systemic risk was Long-Term Capital Management.

Long-Term Capital Management, or LTCM, used highly leveraged trading strategies and employed prominent financial experts, including Nobel Prize-winning economists. Its positions were designed to profit from small pricing differences, but the 1998 Russian financial crisis and other market disruptions caused those relationships to move sharply against the fund.

The fund suffered enormous losses and faced the risk of disorderly liquidation. The Federal Reserve Bank of New York helped coordinate a private-sector recapitalization by major financial institutions. The central bank did not directly provide the rescue money, but officials feared that a chaotic failure could destabilize markets.

LTCM's episode became a classic example of leverage and interconnectedness. The fund was liquidated after the rescue and ceased operations in early 2000.