* KOSPI rises, foreigners net buyers

* Korean won strengthens against U.S. dollar

* South Korea benchmark bond yield falls

* For the midday report, please click

SEOUL, Jan 12 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares marked their best day in six weeks on Wednesday, as investors appeared pleased with a less-hawkish stance by the U.S. Federal Reserve Chair Jerome Powell. The Korean won strengthened, while the benchmark bond yield fell.

** The benchmark KOSPI ended up 45.10 points, or 1.54%, at 2,972.48, logging the sharpest rise since Dec. 2.

** Most heavyweights gained, with Samsung Biologics and Naver rising 2.88% and 3.13%, respectively, while LG Chem added 5.31%.

** The KOSPI index tracked overnight gains on Wall Street after Powell pledged to tackle inflation to support economic growth and said the U.S. central bank was ready for the start of tighter monetary policy.

** Meanwhile, a Reuters poll showed the Bank of Korea is seen raising its policy rate to 1.25% at its Friday meeting to restrain inflationary risks and the increasing debt that households are taking on to buy property.

** Investor focus was also on U.S. December inflation data expected later in the day, with headline CPI seen coming in at a red-hot 7% on a year-on-year basis.

** Foreigners were net buyers of 452 billion won ($379.67 million) worth of shares on the main board.

** The won ended at 1,190.5 per dollar on the onshore settlement platform, 0.35% higher than its previous close. The unit strengthened to its highest level in more than one week.

** In offshore trading, the won was quoted at 1,190.4, while in non-deliverable forward trading its one-month contract was quoted at 1,190.9.

** In money and debt markets, March futures on three-year treasury bonds rose 0.12 point to 108.47.

** The most liquid 3-year Korean treasury bond yield fell by 3.4 basis points to 2.004%, while the benchmark 10-year yield dropped by 5.1 basis points to 2.434%.

($1 = 1,190.5000 won) (Reporting by Joori Roh; Editing by Sherry Jacob-Phillips)