* KOSPI falls, foreigners net sellers

* Korean won weakens against dollar

* South Korea benchmark bond yield rises

SEOUL, Aug 17 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares fell on Thursday for a fifth straight session, on worries over monetary tightening uncertainty in the United States.

** The Korean won weakened, while the benchmark bond yield rose.

** The benchmark KOSPI fell 33.39 points, or 1.32%, to 2,492.25 as of 0124 GMT, hitting its lowest intraday level since mid-May.

** Federal Reserve officials were divided over the need for more interest rate hikes at the U.S. central bank's July 25-26 meeting, according to minutes of the session that were released on Wednesday.

** "The market was weighed by the tightening stance in the minutes," said Korea Investment Securities' analyst Kim Dae-jun, also citing the uncertainty of the Bank of Korea's upcoming policy meeting and U.S. Jackson Hole symposium.

** Chipmaker Samsung Electronics fell 1.19% and peer SK Hynix lost 2.25%, but battery maker LG Energy Solution climbed 0.38%.

** Hyundai Motor shed 1.51% and its sister automaker Kia Corp lost 1.28%, while search engine Naver and instant messenger Kakao were down 2.25% and down 1.69%, respectively.

** Of the total 931 issues traded, only 72 shares rose.

** Foreigners were net sellers of shares worth 67.2 billion won ($50.10 million).

** The won was quoted at 1,342.8 per dollar on the onshore settlement platform, 0.44% lower than its previous close at 1,336.9.

** In money and debt markets, September futures on three-year treasury bonds fell 0.16 point to 103.40.

** The most liquid three-year Korean treasury bond yield rose by 4 basis points to 3.757%, while the benchmark 10-year yield rose by 6.5 basis points to 3.941%. ($1 = 1,341.3900 won) (Reporting by Jihoon Lee; Editing by Sohini Goswami)