If the leverage ratio of Tang Zheng is 10% and the current contract price is 1000, then the landlord can buy 1000 lots with1000 yuan. In other words, as long as the contract price rises by 10%, the real profit of the landlord's funds is 100%.
Suppose the landlord's capital is 1 0,000 yuan, and the transaction is 10 times (that is, buying 10 lots, we don't calculate the handling fee, etc. ). It rose by 100 on the first day, and on the third day of the next day, if the landlord closes the position on the third day, the profit rate should be 30%, 30%× 10000 (ten lots)+principal, totaling 4000 yuan.