Investors, South Korean tech suppliers brush off N.Korea threat

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* Tensions grow between U.S. and N.Korea over missile program

* Conflict on peninsular would disrupt tech component supplies

* S.Korea home to Samsung Electronics, LG Display, SK Hynix

* Parts for smartphones, TVs, computers, tablets at risk

* But Seoul stocks up 9.3 pct so far in 2017, near record highs

By Jennifer Ablan and Stephen Nellis

NEW YORK/SAN FRANCISCO, April 28 (Reuters) - Growing tensions with North Korea should worry global electronics firms such as Apple Inc as they source key parts from South Korea, but investors are brushing off such concerns and snapping up shares in key exporters, heartened by robust earnings and big investment plans.

U.S. President Donald Trump said on Thursday in an interview with Reuters that a major conflict with North Korea is possible in the standoff over its nuclear and missile programs, though he would prefer a diplomatic resolution.

South Korea, a U.S. ally and home to major electronics parts makers such as Samsung Electronics, LG Display and SK Hynix, would be particularly vulnerable to any military attack from its northern neighbor.

Any interruptions to operations could significantly disrupt global manufacturing of smartphones, televisions, computers and tablets. South Korea supplies more than half of components such as memory chips and flat screens.

Despite escalating tensions, investors are pouring money into South Korea's financial market, and companies are flocking to the stock market to raise billions of dollars.

"This is mainly just chest-thumping behavior on the part of North Korea and President Trump, but I don't think it will be anything more than that," said Geoff Pazzanese, a senior portfolio manager at Federated Investors in New York.

Pazzanese, who owns large positions in Samsung and chipmaker Hynix, said he would be a buyer if the market sold off as a result of a North Korean nuclear test, partly because the Trump administration has reaffirmed its military support for South Korea.

Seoul's stock market has climbed 9 percent so far this year to near record highs, helped by strong earnings by major exporters including Samsung Electronics, which rose 3 percent to a life-time high on Friday after reporting its highest profit in more than three years.

Earlier this week, Hynix and LG Display, both Apple suppliers, reported record quarterly profits and sounded upbeat for the remainder of the year.

"The tension might mean some sentimental risk more than fundamental risk," said John Teng, an equity analyst at Janus Capital Group in Singapore.