Goldman Sachs warns South Korea’s leveraged ETFs may boost volatility

New 2x single-stock ETFs tied to Samsung and SK Hynix could funnel $3.5 billion into two stocks that already dominate nearly half the Kospi index.

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Add us on Google by Editorial Team May. 28, 2026

South Korea is about to hand its retail investors a loaded weapon. Goldman Sachs is sounding the alarm on the country’s planned launch of single-stock leveraged ETFs tied to Samsung Electronics and SK Hynix, warning that the products could amplify volatility in a market already prone to wild swings.

The ETFs, designed to deliver 2x daily returns on each stock, are scheduled to debut in late May 2026. Together, Samsung and SK Hynix account for nearly 50% of the Kospi index.

The math behind the mayhem

Here’s the thing about leveraged ETFs: they don’t just passively track a stock. They have to rebalance daily to maintain that 2x exposure, which means buying more when prices rise and selling when they fall.

South Korea’s market has already demonstrated what that looks like. During a notable market decline in March 2026, rebalancing flows from leveraged products accounted for 60% of SK Hynix’s trading volume within a single hour.

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Mirae Asset Securities estimates that the new ETFs could attract net inflows of up to 5.3 trillion won, roughly $3.5 billion, right at launch. For context, South Korea’s entire equity market is valued at around $4.5 trillion.

Goldman Sachs has pointed to retail investor “exuberance” as a key concern. The bank noted over $13 billion in foreign outflows from South Korean equities in May 2026 alone.

A market already on edge

The Kospi index hasn’t exactly been a picture of stability. The benchmark has experienced frequent 5% intraday swings, with record fluctuation levels becoming the norm rather than the exception.

The problem isn’t that retail investors want exposure to semiconductors. It’s the mechanics of how leveraged ETFs interact with concentrated index weights. When two stocks comprise nearly half of a national benchmark, leveraged products tied to those stocks don’t just affect the individual names. They can move the entire index.

Regulators are watching, but is it enough

South Korean authorities haven’t been completely asleep at the wheel. Regulators have indicated precautionary measures including mandatory investor education requirements for anyone looking to trade these products.

For investors watching from outside South Korea, the implications extend beyond the Kospi. Samsung and SK Hynix are critical nodes in the global semiconductor supply chain. Artificial volatility in their stock prices, driven by leveraged ETF mechanics rather than fundamental changes in demand for memory chips, could create noise that ripples through related names in the US, Japan, and Taiwan.

Portfolio managers with exposure to semiconductor ETFs or individual chip stocks should watch for unusual volume patterns in Samsung and SK Hynix following the late May launch. If the 60% volume share from leveraged rebalancing seen in March becomes a regular occurrence rather than a one-off, it would suggest these products are meaningfully distorting price discovery.

Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.