Calculation example: Take the spot nickel of an exchange as 55 yuan/kg, an investor enters the warehouse at the current price to buy the spot nickel of 100 kg, and closes the position at the price of 60 yuan/kg on the same day. The handling fee rate of this firm is 8/10000 unilaterally.
Then the handling fee of this transaction = (55+60) *100 *1* 0.08% = 9.2 yuan.
Note: The quotation and handling fee rate of spot nickel in different exchanges are different, which can be calculated by substituting into the formula.
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