Casper Landsten-Thirty Days Later. Casper Landsten once again has $0.9 million (or its Swiss franc equivalent) to invest for three months. He now faces the following rates. Should he enter into a covered interest arbitrage (CIA) investment? Arbitrage funds available Spot exchange rate (SFr/$) 3-month forward rate (SFr/$) U.S. Dollar annual interest rate Swiss franc annual interest rate $ 900,000 1.3392 1.3287 4.748 % 3.623 % The CIA profit potential is %, which tells Casper Landsten he should borrow , and then sell the from the drop-down menus.) and invest in the yielding currency, the principal and interest forward three months locking in a CIA profit. (Round to three decimal places and select