The effect of South Korea raising the margin threshold is becoming apparent: retail investors are reducing their holdings in leveraged ETFs and turning to spot purchases

According to Daum, after South Korea's financial regulatory authorities raised the base margin for domestic and foreign single-stock leveraged products from 10 million won in securities to 30 million won in pure cash starting July 31, South Korean retail investors began to rapidly adjust their portfolios.

According to data from the Korea Securities Depository, Tesla's 2x leveraged product TSLL recorded a net purchase of 14.58 million USD on August 3, but the purchase amount on the 4th plummeted from the previous day's 15.6 million USD to 1.56 million USD, while the selling amount rose to 8.68 million USD, resulting in a net sell of 7.11 million USD for the day. During the same period, Tesla's spot net purchases reached 42.3 million USD, more than five times the net purchase amount of TSLL.

Micron Technology and SanDisk also showed similar divergence—Micron's 2x leveraged product flipped from a net purchase of 10.81 million USD on the 3rd to a net sell of 15.98 million USD on the 4th, while SanDisk's 2x leveraged product changed from a net purchase of 17.74 million USD to a net sell of 33.74 million USD. Meanwhile, the spot net inflows for the two companies were 148 million USD and 145 million USD, respectively, indicating a significant trend of funds shifting from leveraged tools to the underlying stocks.

The tightened regulations require that the base margin must be paid in cash, with alternative securities such as stocks, ETFs, and bonds no longer counted, and existing investors must also meet the new standards when making additional purchases; selling is unrestricted, but the funds from sales must be settled after T+2 days before they can be counted as cash margin.

The new rules were originally planned to be implemented in phases in August, but due to concerns that limiting it to Korean products would lead to a capital influx into overseas leveraged products like Tesla and Nvidia, creating a balloon effect, South Korean regulators moved the implementation date up to July 31 and simultaneously covered both domestic and foreign products.

South Korean investors have reacted strongly, believing that extending measures aimed at local market volatility to overseas products constitutes excessive intervention, and that only South Korean investors must meet the 30 million won cash threshold, putting them at a disadvantage in global competition.