FINAL RESULT on Citi arbitrage (Free Money)

FINAL RESULT on the arbitrage position for C (opened in 15-Apr with expiry date on 19-Jun). A total cummulative of 6,000 positions were created.

AVERAGE PRICE
Short Sell 6,000 C at $3.89
Sell 60x Jun-PUT-Strike-$5 at $2.16
Buy 60x Jun-CALL-Strike-$5 at $0.43
Net cash collected is $5.62 ( i.e. 3.89 + 2.16 - 0.43 ) per share. PUT option was assigned on end of day 19-Jun at $5.00.
Gross target profit was $0.62 x 6,000 = $3,720 (commission already net off except interest cost on short-sell).
Accrued interest is $1,132.
FINAL net profit (free money) realised is $2,588 ($3720 - $1132).

Interest charge on shorting C (borrowing shares) was $1,132 / (6000 * $3.89) = 4.85% for about 2 months. Seem very high... an annual equivalent rate of 29.1% ! Need to check on this. I thought it was 9% annual rate.

Fund D account net balance as of now is $102,860.