81.   China-related stocks took a pounding on the Hong Kong market Tuesday as investor enthusiasm ebbed and finance houses issued margin calls.

82.   Federal authorities said Jakob needed the stock price to fall so he could buy back shares and cover a margin call issued by his online brokerage.

83.   Federal authorities claim Jakob wanted the stock price to drop so he could buy back shares and cover a margin call issued by his online brokerage firm.

84.   Furthermore, as most of them were caught in the turmoil, difficulty still lies ahead as they face the possibility of forced-selling and margin call.

85.   Fueling the selling were margin calls, in which investors are required to sell stocks they have bought using borrowed money, and plain-old panic.

86.   If it falls below that, a margin call occurs.

87.   In a margin call, investors who have borrowed money to buy stocks are required to sell their holdings when they fall to a predetermined level.

88.   In margin calls, investors are asked to come up with more money to meet minimum requirement of loans used to buy securities.

89.   In margin calls investors are asked to come up with more money to meet minimum requirement of loans used to buy securities.

90.   In margin calls investors are asked to come up with more money to meet the minimum requirement of loans used to buy securities.