South Korean shares flat on US policy, bond market caution

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

SEOUL, May 23 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares were flat on Friday, weighed by caution over U.S. President Donald Trump's tax-cut bill and remarks from a South Korean minister that officials are monitoring the domestic impact of U.S. bond market volatility.

** The benchmark KOSPI .KS11 held its ground at 2,593.97, as of 0214 GMT.

** U.S. stocks closed a choppy session little changed on Thursday, erasing initial declines as Treasury yields eased off recent highs after the House of Representatives passed Trump's tax and spending bill. .N

** South Korea pledged on Wednesday more support measures for key export industries such as biopharmaceuticals and autos, as Trump's sweeping tariffs weigh on the trade-reliant economy.

** Acting Finance Minister Kim Beom-seok said on Friday that authorities plan to closely monitor domestic market impact from heightened volatility in the Unites States and Japan bond markets.

** Among index heavyweights, South Korean chipmaker Samsung Electronics 005930.KS fell 0.18%, while peer SK Hynix 000660.KS gained 1.22%. Battery maker LG Energy Solution 373220.KS slid 2.37%.

** Shares of Hyundai Motor 005380.KS and sister automaker Kia Corp 000270.KS were down 1.43% and 1.79%, respectively. Steelmaker POSCO Holdings 005490.KS shed 1.68% and drugmaker Samsung BioLogics 207940.KS fell 3.15%.

** Of the total 937 traded issues, 510 shares advanced, while 387 declined.

** Foreigners were net sellers of shares worth 39.6 billion won ($28.77 million).

** The won was quoted at 1,376.8 per dollar on the onshore settlement platform KRW=KFTC, 0.43% higher than its previous close at 1,382.7.

** In money and debt markets, June futures on three-year treasury bonds KTBc1 lost 0.03 point to 107.55.

** The most liquid three-year Korean treasury bond yield KR3YT=RR was flat at 2.336%, while the benchmark 10-year yield KR10YT=RR rose by 2.2 basis points to 2.766%.

($1 = 1,376.6000 won)