South Korea Regulator Sets 30M Won Cash Rule for Leveraged ETFs

South Korean regulatory authorities are moving aggressively to rein in speculative retail trading after exchange-traded products triggered severe market turbulence.

The policy shifts away from a more lenient previous framework that allowed substitute securities like stocks, regular ETFs, and bonds to cover 70 per cent of the requirement. Under the new standards, investors holding millions in blue-chip equities will see those assets valued at zero for deposit purposes if they lack ready cash. Furthermore, proceeds from stock sales will no longer count toward the deposit on the transaction day; cash must be fully settled under a T+2 timeline before it unlocks further leveraged purchases according to the regulatory guidance.

Regulatory Regrets and the Exploding Popularity of Leveraged Chip Bets

The regulatory tightening comes on the heels of deep public misgivings expressed by top officials. Financial Supervisory Service Governor Lee Chan-jin made waves during a briefing when he admitted wishing he had blocked the late-May introduction of 16 domestic single-stock leveraged ETFs tied to South Korea’s dominant semiconductor manufacturers Samsung Electronics and SK Hynix.

Those products launched on May 27 with combined assets of US$3 billion, but assets quickly swelled to roughly 14 trillion won, with retail investors accounting for an estimated 92 per cent of holders as trading activity refused to cool despite multiple consumer warnings.

Foreign Selloffs, Currency Pressures, and the Kospi Bear Market

While domestic retail investors piled into leveraged bets hoping to capture outsized gains, foreign institutional investors headed for the exits. As part of wider portfolio rebalancing, foreign net selling on the Kospi surpassed 178 trillion won ($117 billion) in the first half of the year according to data cited by market analysts. This massive institutional outflow coincided with a weakening local currency, as the won-dollar rate pushed past 1,550 won compared to below 1,440 won at the end of the previous year.

The combination of relentless foreign selling and explosive retail-driven volatility pushed the Kospi down 22.8 per cent from its June 19 peak, sending the index into bear-market territory for the first time in nearly four years since September 2022.

The Overseas Alternative and the Limits of Onshore Controls

Domestic restrictions may do little to stem investor appetite for high-risk exposure, as Korean traders continue routing capital toward offshore products. Data from SEIBro, a portal operated by the Korea Securities Depository, shows that leveraged products accounted for 21 of the 50 most heavily bought U.S.-listed securities by Korean investors between June 2 and July 1, with net purchases climbing to $1.65 billion up from $490 million in the previous monthly cycle.

Traders also maintained substantial positions in Hong Kong-listed single-stock leveraged assets, purchasing $151.5 million worth of the SK hynix product and $79.3 million of the Samsung Electronics equivalent over the same multi-week window. Because overseas exchanges impose no mandatory education programs or onerous local cash deposit requirements, industry participants point out that domestic single-stock leveraged ETFs have simply created another avenue for accessing high-risk leverage closer to home.

Potential Additional Caps and What Lies Ahead

With cash deposit barriers going live on July 31 and temporary product listings and advertising bans already active since July 16 as part of the regulatory crackdown, financial authorities are weighing even stricter interventions. Financial Services Commission Chairman Lee Eog-weon told a meeting with local brokerages and asset managers in Seoul that the agency is prepared to review and implement additional measures, including putting a hard cap on the total value of investments for individual retail participants.