South Korean shares erase early gains as traders eye Trump's first day

• KOSPI falls, foreigners net sellers
• Korean won strengthens against dollar
• South Korea benchmark bond yield rises

SEOUL, Jan 20 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares erased early gains to end lower on Monday, as traders took a cautious approach ahead of U.S. President-elect Donald Trump's inauguration.

** The benchmark KOSPI .KS11 closed down 3.50 points, or 0.14%, at 2,520.05.

** The KOSPI rose as much as 0.5% in early trade, tracking Wall Street's gains on Friday, but erased the gains near the session close.

** Trump, who will be sworn in as president of the United States later on Monday, has pledged to sign a flurry of executive orders on subjects ranging from border security to oil and gas production on his first day in office.

** "Of course, tariff and immigration policies will be most important. Still, his tariff policies are expected to be less than a disaster, leaving room for negotiations and being gradual," said Huh Jae-hwan, an analyst at Eugene Investment Securities.

** South Korea pledged a record amount of financing support for exporters to mitigate any negative impact from changes in U.S. trade policies.

** Among index heavyweights, chipmakers and automakers fell, but battery makers tracked Tesla TSLA.O's 3.1% jump on Friday.

** Of the total 944 traded issues, 389 shares advanced, while 491 declined.

** Foreigners were net sellers of shares worth 414.6 billion won ($285.69 million).

** The won was quoted at 1,451.7 per dollar on the onshore settlement platform KRW=KFTC, 0.47% higher than its previous close at 1,458.5.

** In money and debt markets, March futures on three-year treasury bonds KTBc1 fell 0.04 point to 106.81.

** The most liquid three-year Korean treasury bond yield KR3YT=RR rose by 1.7 basis points to 2.604%, while the benchmark 10-year yield KR10YT=RR rose by 7.0 basis points to 2.864%.

($1 = 1,451.2300 won)

(Reporting by Jihoon Lee; Editing by Rashmi Aich)