Answer: Inverse floating-rate notes.

The Orange County case is a classic example of how leverage and complex financial instruments can lead to massive losses. The fund, managed by Robert Citron, heavily invested in **inverse floating-rate notes**, which are complex derivative securities whose value moves inversely to interest rates. **Key points about the Orange County case:** - The portfolio used substantial leverage through reverse repurchase agreements (repos) - Inverse floaters pay higher interest when rates fall, but lose value when rates rise - When the Federal Reserve raised interest rates in 1994, the portfolio suffered massive losses - The county ultimately declared bankruptcy due to $1.6 billion in losses This case demonstrates the dangers of leverage combined with complex interest rate derivatives that are highly sensitive to market movements.

Author: Tanishq Prabhu