Samsung’s Record 19-Fold Profit Couldn’t Stop Korea’s ETF Rout

Samsung Electronics guided to 89.4 trillion won in preliminary Q2 2026 operating profit on July 7, a 19-fold jump from a year earlier and an all-time high. The company also guided quarterly revenue to more than 171 trillion won, also a record and more than double the year-ago figure, per its preliminary Q2 2026 report. Yet Samsung closed down 6.92% the same day, SK Hynix fell 6.06%, and the KOSPI ended the session down 4.91% at 7,656.31.

The trigger was not the earnings. A six-week-old class of single-stock leveraged ETFs tied to the two names mechanically doubled the move, forced the exchange to trigger a sidecar halt and a Level 1 circuit breaker, and pushed the Bank of Korea, the Financial Supervisory Service, and the Deputy Prime Minister into emergency public reversals on a market structure they had blessed ten days earlier.

Samsung Flagged 19x Profit. The Stock Still Slid.

Samsung Electronics guided to 89.4 trillion won in preliminary Q2 2026 operating profit on July 7, a 19-fold jump from a year earlier and an all-time high. The figure topped the analyst consensus of 85.05 trillion won and was 56% above the previous quarter’s 57.2 trillion won, per the preliminary report and CNBC’s same-day account.

Quarterly revenue was guided to more than 171 trillion won, also a record and more than double the year-ago figure, on the back of record memory prices tied to AI server demand. Citi analyst Peter Lee called memory fundamentals “intact” and raised his full-year Samsung operating profit forecast from 334 trillion won to 401 trillion won. The Korean editorial board of the Korea JoongAng Daily noted the Q2 guidance exceeded even the quarterly earnings of Nvidia, the world’s most valuable listed company.

That beat was not enough to stop the selling. Samsung closed down 6.92% on July 7, and SK Hynix closed down 6.06%, according to Korea Exchange and Koscom CHECK data compiled by BigGo Finance. The KOSPI ended the session down 4.91% at 7,656.31 and was off 7.6% at one point in Asian trade, per Investing.com. The Nikkei 225 fell more than 2%, with Murata down more than 8%, LG Innotek off more than 5%, MediaTek down nearly 3%, and Foxconn (Hon Hai Precision) falling despite reporting stronger-than-expected June and second-quarter revenue on AI server demand.

• 89.4 trillion won: Samsung’s preliminary Q2 2026 operating profit (all-time high)
• 19-fold jump from a year earlier
• 171+ trillion won: Samsung’s preliminary Q2 2026 revenue (also a record)
• 85.05 trillion won: analyst consensus for Q2 operating profit (Samsung beat by ~5%)
• 4.91%: KOSPI close on July 7, 2026

Six-Week-Old Leveraged ETFs Turned a Drop Into a Rout

Single-stock leveraged ETFs debuted on the South Korean stock exchange in late May 2026, and by July 7 the 14 active products tied to Samsung and SK Hynix had already moved from novelty to systemic risk. The products seek to deliver twice the daily return of their underlying stock, a structure that forces issuers to rebalance hedge positions as share prices move. On a day when the underlyings fell roughly 6%, the wrappers did what they were designed to do and fell roughly 12%, with the rebalancing flows pushing the underlying names lower in turn.

All seven Samsung Electronics leveraged ETFs closed down around 13%, and all seven SK Hynix leveraged ETFs closed down around 12%, per Korea Exchange data. The KODEX Samsung Electronics Single-Stock Leveraged ETF ended at 18,310 won, down 13.71%, and the KODEX SK Hynix Single-Stock Leveraged closed at 22,130 won, down 12.56%. The TIGER Samsung Electronics and TIGER SK Hynix single-stock leveraged products fell 13.88% and 12.44%, with intraday lows near 20% for several wrappers. The session pushed 13 of 14 leveraged products below their 20,000 won listing price, and the KODEX SK Hynix product, the most heavily traded, has now fallen to roughly half its closing high of 44,000 won. Inverse 2X wrappers that bet on declines moved the other way: SOL SK Hynix Futures Single-Stock Inverse 2X rose 11.84%, and PLUS Samsung Electronics Futures Single-Stock Inverse 2X rose 12.68%. The full picture is laid out in the planned 1,000 trillion won investment plan that anchors the country’s chip strategy and shapes the capex overhang now pressuring the names.

The Trading Floor Hit Its Brakes

The session’s volatility forced the exchange to intervene twice. The KOSPI triggered a sidecar halt on program selling in the morning, and a Level 1 circuit breaker activated in the afternoon, per the same BigGo Finance tally.

The Korea JoongAng Daily editorial board, writing on July 8, counted the afternoon halt as the sixth circuit breaker of 2026 and noted the KOSPI had swung sharply enough to trigger both kinds of halt on the same day.

The leverage flowed through the ETF tape. Combined turnover of the 16 single-stock leveraged and inverse products reached 13.01 trillion won (approximately $8.6 billion) on July 7, more than one-third of total ETF trading volume of 36.05 trillion won. The Korea JoongAng Daily editorial board estimated leveraged ETFs now account for roughly one-quarter of total ETF turnover, and cited Agarwal at SocGen for the observation that single-stock leveraged products can corner as much as 60% of total stock turnover on the largest down days.

The KOSPI 200 Volatility Index, a measure of option prices on the benchmark, hit a fresh peak in the days surrounding the move and sat about five times the Cboe Volatility Index for U.S. equities, per Bloomberg. The Wall Street Journal has likened the Korean stock market to a casino since the leveraged ETFs arrived, the Korea JoongAng Daily editorial board wrote in its call to rein in Korea’s leveraged ETFs. Together the data show a market where a product class that did not exist two months ago now sits between retail flow and the country’s two largest stocks.

1. Open: Samsung and SK Hynix open sharply lower after the preliminary Q2 2026 release
2. Morning: Sidecar halt on program selling triggered as leveraged ETF declines feed back into the underlying names
3. Afternoon: Level 1 circuit breaker activated, the sixth such halt of 2026
4. Close: KOSPI finishes down 4.91% at 7,656.31; combined leveraged and inverse ETF turnover reaches 13.01 trillion won

Retail Investors Were Already Underwater

Most retail buyers of the leveraged products were already losing money before the July 7 selloff. NH Investment & Securities data from its mobile trading system, as of July 3, showed roughly 79% of investors in the KODEX SK Hynix Single-Stock Leveraged ETF sitting on losses, and roughly 89% of investors in the KODEX Samsung Electronics Single-Stock Leveraged ETF were underwater, per BigGo Finance’s reporting on the BOK warning.

The combined net asset value of the 16 single-stock leveraged products stood at 14.91 trillion won (approximately $9.8 billion) on July 6, down roughly 15.3% from 17.6 trillion won on June 25, a drop of nearly 3 trillion won in ten days. Mirae Asset Securities analyst Kim Seok-hwan put valuation losses at approximately 400 billion won for the Samsung products and roughly 600 billion won for the SK Hynix products, even as net investor inflows into the KODEX and TIGER wrappers continued to rise. These products are designed to amplify daily moves, and their negative compounding effect can rapidly erode principal in sideways or volatile markets, a structural risk built into the wrapper itself. The broader pressure on the chain shows up in the broader DRAM supply chain lawsuits now working through U.S. courts.

The total net asset value of single-stock leveraged products has shrunk by nearly 3 trillion won from its peak, recording net losses.

Kim Seok-hwan, analyst at Mirae Asset Securities, in a July 8 note reported by BigGo Finance and Maeil Kyungjae.

Why a Record Quarter Did Not Settle AI Doubt

The selling was not a verdict on Samsung’s numbers. It was a verdict on the question those numbers could not answer: whether the AI capex cycle that lifted memory prices to record levels will keep lifting them. The buy-side voices in the next two days pointed at the same gap, the gap between a record quarter and a sustainable earnings run.

Vasu Menon, Managing Director of Investment Strategy at OCBC, said the selloff reflected growing doubts over whether exceptional memory-chip earnings can be sustained if AI infrastructure investment slows, leaving investors increasingly focused on valuation rather than near-term profits, per Investing.com. JPMorgan Chase, in a note to clients the week before, said supply-demand fundamentals remain favorable but that some investors are beginning to question whether cloud infrastructure providers can sustain their massive AI capex.

Memory chips are believed to account for 52% of big public cloud capex this year, and could reach 70% next year, a concentration that explains why a guidance beat is no longer enough on its own. Citigroup analyst Peter Lee told the Wall Street Journal that memory fundamentals are intact, and raised his full-year Samsung operating profit forecast from 334 trillion won to 401 trillion won. Nomura expects commodity DRAM prices to rise 24% in Q3 and NAND prices to rise 25%. The fundamental story is not breaking. The valuation story is.

Regulators and the Bank of Korea Are Closing In

The Bank of Korea has now warned that single-stock leveraged ETFs tied to Samsung Electronics and SK Hynix could deepen market concentration, amplify volatility, and intensify one-way trading flows. The central bank delivered that assessment in a written response to a lawmaker from the ruling People Power Party, and it marks a sharp reversal from the BOK’s own Financial Stability Report ten days earlier, which had assessed the products’ market impact as “limited.” The two stocks together account for 55.3% of KOSPI’s total market capitalization and 63.5% of trading value, the BOK said, which is why a product class tracking just two names can move the whole index.

The central bank said it will strengthen monitoring of the ETFs’ effect on the stock market and broader financial system, and will consult closely with financial authorities who are already reviewing measures to raise investment barriers for the products. The shift echoes concerns raised by the Financial Supervisory Service.

Financial Supervisory Service Governor Lee Chan-jin said last month he regretted not blocking the launch of the leveraged ETFs, remarking he would have done so “even if it meant lying down in front of them,” per the Korea JoongAng Daily editorial board.

Deputy Prime Minister and Minister of Economy and Finance Koo Yun-cheol told a plenary session of the National Assembly’s Strategy and Finance Committee that authorities are “well aware of concerns that leveraged ETFs are introducing volatility into the stock market” and are “consulting with relevant agencies on supplementary measures to minimize volatility,” per BigGo Finance. The regulatory vocabulary has moved from observation to action, a fast trip for a product class that listed only six weeks ago, and the same week the government is coordinating the separate 1,000 trillion won AI plan it hopes will define the next decade.

Strategists Read the Tape as Sentiment, Not Earnings

Rajat Agarwal, Asia Equity Strategist at Societe Generale, drew a direct line from the products’ structure to the day’s tape. “The earnings, though strong, didn’t have a big surprise element and were mostly priced in in the strong run this year,” Agarwal said. “In the short term sentiment matters more than the earnings and that is where memory stocks are feeling the heat right now.”

Charu Chanana, chief investment strategist at Saxo Markets, framed the same gap in macro terms. “The memory trade still has legs, but the tailwind is selective while the headwind is much broader,” Chanana said, per Bloomberg. The next test sits a few days out: SK Hynix is set to begin trading American depositary receipts on the Nasdaq on July 10, 2026, expanding access for U.S. investors and putting a second memory-chip name directly into the hands of foreign buyers who have been net sellers of Korean stocks through the volatility. Samsung is expected to publish its full Q2 2026 results, with a segment breakdown, later this month. Attention now turns to the start of the U.S. earnings season and the minutes of the Federal Reserve’s latest policy meeting, both of which are expected to provide fresh insight into the outlook for technology spending and interest rates.

Frequently Asked Questions

What did Samsung report for Q2 2026?

Samsung Electronics guided to 89.4 trillion won in preliminary Q2 2026 operating profit on July 6, a 19-fold jump from a year earlier and an all-time high. Quarterly revenue was guided to more than 171 trillion won, also a record. The operating profit figure topped analyst consensus of 85.05 trillion won, and was 56% above the 57.2 trillion won posted in Q1 2026.

What are Korea’s single-stock leveraged ETFs?

Single-stock leveraged ETFs debuted on the South Korean stock exchange in late May 2026. The 14 active products track Samsung Electronics and SK Hynix, the two stocks that together make up 55.3% of the KOSPI’s market capitalization. Each seeks to deliver twice the daily return of its underlying stock, a structure that forces daily rebalancing and can amplify one-way selling during sharp declines.

How much did retail investors lose on these ETFs?

NH Investment & Securities data from its mobile trading system on July 3, 2026, showed roughly 79% of KODEX SK Hynix Single-Stock Leveraged investors and roughly 89% of KODEX Samsung Electronics Single-Stock Leveraged holders were sitting on losses. Mirae Asset analyst Kim Seok-hwan estimated nearly 3 trillion won of combined net assets had evaporated in 10 days from the products’ peak.

What are Korean regulators doing about leveraged ETFs?

The Bank of Korea has warned these products could deepen concentration, amplify volatility, and widen retail investor losses in a downturn. Financial Supervisory Service Governor Lee Chan-jin said he regretted not blocking the launch, remarking he would have done so “even if it meant lying down in front of them.” Deputy Prime Minister Koo Yun-cheol told the National Assembly authorities are “consulting with relevant agencies on supplementary measures to minimize volatility.”

What is the next catalyst for Korean chip stocks?

Investors are watching the start of the U.S. earnings season and the minutes of the Federal Reserve’s latest policy meeting for signals on tech spending and rates. SK Hynix is set to begin trading American depositary receipts on the Nasdaq on July 10, 2026, expanding access for U.S. investors. Samsung is expected to publish its full Q2 2026 results later this month.

Disclaimer: This article is for informational purposes only and is not investment advice. Stock prices, ETF values, and analyst forecasts can change rapidly. Figures cited are accurate as of publication on July 8, 2026. Readers should consult a qualified financial professional before making any investment decision.