原始保證金
initial margin
指投資人在期貨市場從事每一單位期貨契約買賣時，要求買方存放在經紀人處的現金或證券數額。通常為契約市場總價值的5%，甚或1%，用來保障經紀商和作?履行契約的後盾。
Refers to the investors in the futures market, futures contracts traded in each unit, the storage requirements of the buyer in the amount of cash or securities broker at. Usually 5% of the total market value of the contract, or even 1%, to perform the contract as security brokers and backing.