or $30 Ex 1a) In each of the following, the starting price. is $50 and the ending price is either $70. for a change of $20. What is the percentage return for each transaction Cignore commissions) 1) You sell a stock short for $50 and repurchase it for $76. Required collateral for the transaction is loot of short sale price. (2) You sell a stock short for 45o and repurchase it for $30. Required Collateral. For the transaction is 100% of short sale price 3) You sell a stack short fort $50 and repurchase it for $70. Required collateral for the transaction is 60% of short sale price