Sonia takes a mortgage loan from a bank to purchase property. Carlos is an immigrant from Mexico to the United States. He sends $200 to Mexico on June 15 at the exchange rate on that day. Sheila saves $10,000 and buys a certificate of deposit (CD) that will mature in six months. An investor holding 3,000 shares of stock of strata Corp, sells them to another investor. A hedge fund purchased credit default swaps on securities it did not own because it believed that the securities were likely to default. In this example, the hedge fund is