利潤
追加保證金問題
希望對這個問題的一部分進行解釋:
Execute a margin call of 1000 shares of a stock at $40/share. The initial margin requirement is 50% and the maintenance margin requirement is 30%. I hold for one year, at which time the stock is selling for $50/share and the stock paid a dividend of $1. The interest rate on the loan was 6% annually. Calculate the percentage return on investment.
我會使用的公式是:
R(t) = [P(t) - P(t-1) + D(t) - Interest(t)] / Initial Investment
我知道答案是:
[50 - 40 + 1 - 1.2] / 20 = 49%
但我不明白為什麼利息是 1.2 而不是 0.06。這背後的原因是什麼?
初始頭寸價值 40000。您發布 50% 的保證金,因此您存入 20000 並藉入 20000。20000 的 6% 是 1200。