A Dormant Copper Mine Reawakens

South Korea’s Stock Market Has Nearly Doubled. Is It Still a Bargain?

The Kospi hit about 7,004 on record chip exports, and almost no American investor owns it. Here is what Samsung, SK hynix, and the Korean won mean for your return.

Hey there, bargain hunter. A stock market that nearly doubles in twelve months is either the most obvious trade in the world or a flashing sign that the easy money is gone. South Korea is making you answer that question right now.

Scoreboard

The Kospi closed around 7,004 on October 2, 2026. The catalyst for the latest leg was unmistakable: South Korea’s exports surged 83.5% in September to a record $120.94 billion, nearly double the $65.95 billion recorded a year earlier, according to the Ministry of Trade, Industry and Energy. Chip exports surged 262.8% from a year earlier to $60.3 billion, topping $60 billion for the first time. SK hynix rose 3.2% in the Korean market on October 1 as optimism over tight AI-memory supply supported the rally.

What Actually Happened

This is not a broad economic story. It is a memory story. The jump reflected both stronger memory demand tied to expanding AI infrastructure investment and rising prices.

Samsung’s numbers spell it out plainly. Samsung posted operating profit of 89.5 trillion won for Q2 2026, a 1,814% increase year on year, with revenue reaching 171.5 trillion won, up 130% year on year. The Device Solutions division, which houses memory operations, posted a quarter-on-quarter sales increase of 56%, with the memory business setting an all-time high for quarterly revenue and operating profit.

SK hynix told a similar story. The company reported record second-quarter results, long-term agreements with around 10 customers, and said it began mass shipments of HBM4 in the second quarter. The hardware cycle is not theoretical. It is showing up at Korean customs every month.

Is It Still Cheap?

Here is where you earn your bargain-hunter credentials. EWY, the iShares MSCI South Korea ETF, closed at $191.88 on October 2. On widely used market data sites, its earnings multiple screens in the low-teens after this year’s surge. That is not obviously expensive, particularly against U.S. semiconductor peers that can trade at far higher multiples when the cycle is hot.

But the currency picture complicates the math. The USD/KRW rate was about 1,343.84 on October 2. That matters because EWY returns are dollar-denominated. Earlier this year, the won traded materially weaker than it is today. For example, the Federal Reserve’s published monthly average for May 2026 was about 1,488 won per dollar. So even if the index is ripping higher in local terms, a weaker won can dull the experience for a U.S.-based holder. A reversal in the won eats directly into dollar-denominated returns.

One more data point for context: Reuters reported in July that Samsung’s strong earnings were widely expected and had largely been priced in after a huge run-up. In other words, the market is not waiting for “good news”; it is waiting for “better than already implied.”

Bull / Base / Bear

• Bull: Micron has said it expects memory and storage supply-demand conditions to be much tighter in calendar 2027 and 2028 than they were in 2026, which would extend pricing power. The won’s gradual appreciation adds a currency boost for dollar-based holders.
• Base: Chip prices plateau at current levels. Samsung and SK hynix sustain elevated margins but growth decelerates. EWY trades sideways at roughly a low-teens earnings multiple.
• Bear: Reuters also flagged investor concern about the sustainability of the AI boom and the risk of slower AI infrastructure spending by major U.S. technology firms. Any capex pullback from cloud hyperscalers hits memory demand fast. A weaker won amplifies the drawdown for dollar investors.

Action Plan

EWY is the simplest on-ramp for most American investors. On a low-teens trailing earnings multiple for the fund’s underlying market, and with chip exports at record levels, it is not expensive by any conventional measure. The risk is that the index already peaked at 9,385 intraday in June before pulling back, and a renewed selloff in AI infrastructure spending would take Samsung and SK hynix down hard, with the index following.

Scale in with a third now, hold another third in reserve for a 10-15% index pullback, and keep the final third for confirmation that chip exports stay near these elevated levels into Q4. Set a currency watch: if USD/KRW climbs back above 1,450, trim until it stabilizes.

Cheap Investor Checklist

• EWY valuation: watch for multiple expansion into the mid-teens as a valuation warning
• Monthly South Korean chip exports: track whether the $60.3 billion September level holds into October
• USD/KRW rate: flag any move above 1,450 as a currency risk trigger
• Samsung Device Solutions operating margin: confirm it stays elevated in Q3 results
• SK hynix HBM4 shipment momentum: watch for any customer pushback or order delays
• Micron (MU) demand commentary: a leading indicator for Korean peer pricing
• Kospi record context: the index is well below its June intraday high near 9,385, which sets your upside reference

Bottom Line

If AI infrastructure spending holds and chip prices stay elevated through 2027, South Korea’s valuation still looks like a cheap seat in the global semiconductor trade. If U.S. cloud capex flinches and the won weakens past 1,450, you will feel both of those cuts simultaneously. The trade is real, the valuation is reasonable, and the currency is the variable most American investors will forget to watch until it is too late.