Iran Fears Crushed Korean Chip Stocks. Here's 1 Thing American Memory Investors Should Watch.

In the wake of the first airstrikes on Iran last week, South Korea’s stock market melted down. The Korea Stock Exchange Composite index (KOSPI) – which tracks all the stocks traded on South Korea’s Korea Stock Exchange – plunged more than 18% over just two days, its worst weekly performance since 2008.

The drop was largely due to double-digit declines in the share prices of the top global providers of memory chips – tech behemoth Samsung Electronics and memory chipmaker SK Hynix. Together, these two stocks collectively account for more than 33% of the KOSPI.

Could the same thing happen to U.S. chipmakers, like memory-chip maker **Micron Technology **(MU +5.70%) or semiconductor behemoth **Nvidia **(NVDA +0.56%)? It’s unlikely.

Image source: Getty Images.

South Korea’s economy is uniquely sensitive to changes in oil prices. In fact, the country is the world’s fourth-largest importer of oil. Its manufacturing-heavy economy is also reliant on exports, making it particularly sensitive to energy prices.

That said, South Korea is dominant within the global market for DRAM, a key type of memory for artificial intelligence (AI) processes. Together, Samsung and SK Hynix control 67% of the global DRAM market. Global demand for DRAM is so high right now that even if high oil prices forced them to increase their chip prices, it probably wouldn’t dent their memory-chip businesses much.

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NASDAQ: MU

Micron Technology

Today’s Change

(5.70%) $23.10

Current Price

$428.45

Key Data Points

Market Cap

$456B

Day’s Range

$413.00 - $429.28

52wk Range

$61.54 - $455.50

Volume

414K

Avg Vol

35M

Gross Margin

45.53%

Dividend Yield

0.11%

However, investors might want to keep an eye on any news about potential price hikes, which could provide a slight benefit to Micron, the third-largest DRAM chipmaker in the world. A prolonged crisis could even benefit Samsung rival Nvidia, though that’s a bit less likely.

As for whether the same situation could hit U.S. markets, it’s unlikely. The two largest U.S. stocks – currently Nvidia and Apple – only account for about 14% of the S&P 500. Meanwhile, the U.S. is a net exporter of oil and gas and has a much more diversified economy than the small Asian nation.