Casper Landsten-Thirty Days Later. Casper Landsten once again has $1.05 million (or its Swiss franc equivalent) to invest for three months. He now faces the following rates. Should he enter into a covered interest arbitrage (CIA) investment? Arbitrage funds available Spot exchange rate (SFr/$) 3-month forward rate (SFr/$) U.S. Dollar annual interest rate $ 1,050,000 1.3395 1.3286 4.752 % Swiss franc annual interest rate 3.626 % The CIA profit potential is %, which tells Casper Landsten he should borrow three decimal places and select from the drop-down menus.) and invest in the yielding currency, the and then sell the principal and interest forward three months locking in a CIA profit. (Round to