* KOSPI rises, foreigners net buyers

* Korean won weakens against dollar

* South Korea benchmark bond yield flat

SEOUL, Sept 15 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares rose on Friday for a second straight session, tracking Wall Street gains on robust economic data, and were on course to end the week in positive territory.

** The benchmark KOSPI was up 19.95 points, or 0.78%, at 2,594.30 by 0148 GMT.

** The KOSPI has risen 1.8% so far this week after a 0.63% fall the previous week.

** "The European Central Bank suggested that it might end monetary tightening, and U.S. retail sales data came in as a surprise," said Cho Jun-Kee, analyst at SK Securities.

** U.S. retail sales increased more than expected in August, data showed on Thursday, but the trend in underlying spending on goods slowed as Americans grappled with higher inflation and borrowing costs.

** Among index heavyweights, chipmaker Samsung Electronics rose 0.28% and peer SK Hynix gained 0.16%, while battery maker LG Energy Solution climbed 0.59%.

** Hyundai Motor shed 0.31% and sister automaker Kia Corp was flat, while search engine Naver and instant messenger Kakao were up 0.89% and up 0.31%, respectively.

** Of the total 934 traded issues, 641 shares advanced, while 214 declined.

** Foreigners were net buyers of shares worth 119.1 billion won ($89.55 million) on the main board so far on Friday. For the week, they sold 560 billion won.

** The won was quoted at 1,329.7 per dollar on the onshore settlement platform, 0.30% lower than its previous close at 1,325.7.

** The won was up 0.3% for the week after its 1.1% drop the week before.

** In money and debt markets, September futures on three-year treasury bonds was unchanged at 103.18.

** The most liquid three-year Korean treasury bond yield rose by 0.4 basis points to 3.840%, while the benchmark 10-year yield was flat at 3.917%. ($1 = 1,329.9200 won) (Reporting by Jihoon Lee; Editing by Sonia Cheema)