* KOSPI rises for 4th session; foreigners net buyers
* Korean won trims early gains to end flat
* South Korea benchmark bond yield falls
* For the midday report, please click
SEOUL, Jan 14 (Reuters) - Round-up of South Korean financial markets:
** South Korean shares rose for a fourth session on Tuesday, boosted by optimism about the signing of a preliminary U.S.-China trade deal to ease an 18-month-old tariff war. The Korean won gave up early losses to end steady, while the benchmark bond yield fell.
** The KOSPI closed up 9.62 points, or 0.43%, at 2238.88, posting its highest close since April 17, 2019.
** China has pledged to buy nearly an additional $80 billion of manufactured goods from the United States over the next two years, plus just over $50 billion more in energy supplies, under the Phase 1 trade deal with China to be signed on Wednesday, a source briefed on the agreement said on Monday.
** The U.S. Treasury Department on Monday also dropped its designation of China as a currency manipulator.
** Positive reports about U.S.-China trade negotiations continued, said Lee Won, an analyst at Bookook Securities. The benchmark index erased some of its early gains as the won turned lower in late afternoon trading, failing to provide further boost to stocks, he added.
** The won was quoted at 1,156.1 per dollar on the onshore settlement platform, 0.01% lower than its previous close at 1,156.0.
** In offshore trading, the won was quoted at 1,158.3 per U.S. dollar, down 0.4% from the previous day, while in non-deliverable forward trading its one-month contract was quoted at 1,157.2 per dollar.
** During the session, the won rallied to its highest since July 1, 2019 against the dollar, supported by rising optimism towards Sino-U.S. trade developments.
** Foreigners were net buyers of around 262.3 billion won ($226.98 million) worth of shares on the main board, becoming net buyers for the eighth consecutive session.
** The KOSPI has risen 1.88% so far this year, and gained 4.8% in the previous 30 trading sessions.
** The trading volume during the session in the KOSPI index was 823.05 million shares and, of the total traded issues of 907, the number of advancing shares was 426. ** The won was steady against the dollar so far this year. ** In money and debt markets, March futures on three-year treasury bonds rose 0.12 points to 110.45, while the three-month Certificate of Deposit rate was quoted at 1.46% in late afternoon trade. ** The most liquid three-year Korean treasury bond yield fell by 3.6 basis points to 1.384% in late afternoon trade, while the benchmark 10-year yield fell by 1.6 basis points to 1.716%. ($1 = 1,155.5900 won) (Reporting by Hayoung Choi; Editing by Anil D’Silva)