The primary reason for the scale of losses suffered by the Orange County portfolio in 1994 was the excessive use of leverage. Robert Citron, the treasurer of Orange County, decided to borrow heavily in the repo market. Repos, or repurchase agreements, allow investors to finance a significant portion of their investments with borrowed money, which is known as leverage. However, the use of leverage can have a multiplicative effect on the profit or loss on any position. This means that even a small change in market prices can have a significant impact on the investor. When the Federal Reserve announced an increase in interest rates, the fund could no longer borrow in the repo market at favorable terms and was eventually forced to declare bankruptcy. The excessive use of leverage amplified the impact of the interest rate increase, leading to substantial losses for the portfolio.

Choice B is incorrect. Overreliance on equity was not the primary reason for the magnitude of losses experienced by Orange County in 1994. The county’s investment portfolio was heavily invested in derivative securities, not equities. Therefore, this option does not accurately reflect the main cause of the financial crisis.

Choice C is incorrect. While an unexpected increase in interest rates by the Federal Reserve did contribute to Orange County’s financial crisis, it was not primarily responsible for the magnitude of losses experienced by the county’s investment portfolio. The main issue was that Orange County had excessively used leverage to invest in derivative securities which were sensitive to interest rate changes.

Choice D is incorrect. Stringent collateral demands by providers of emergency capital were a consequence, rather than a cause, of Orange County’s financial crisis in 1994. These demands came into play after significant losses had already been incurred due to excessive use of leverage and subsequent market volatility.

Things to Remember

• Leverage in investing refers to using borrowed funds to increase the potential return of an investment. While it can amplify gains, it also magnifies losses, as seen in the Orange County portfolio case.
• Repo markets involve short-term borrowing and lending using securities as collateral. They are commonly used by investors to finance their positions and increase their exposure to the market.
• Derivative securities are financial contracts whose value is derived from an underlying