COLLATERALIZED TRANSACTIONS (Tables)

12 Months Ended

Dec. 31, 2021

Collateralized Financings [Abstract]

Schedule of fair values of client margin asset and security borrowings that were available to utilize as collateral

The following table summarizes the amounts related to collateralized transactions as of December 31, 2020 and 2021:

	As of December 31,
	2020		2021
	US$		US$
Total client margin asset		1,626,260,131		1,759,500,650
Fulfillment of client margin financings		168,840,684		202,004,165
Fulfillment of client short sales		21,492,878		31,612,750
Securities lending to other brokers		434,780,528		392,897,973
Total collateral repledged		625,114,090		626,514,888