* KOSPI rises 1.8%, sees best week in two months

* Korean won jumps, snaps 6-week losing streak

* South Korea benchmark bond yield falls

* For the midday report, please click

SEOUL, May 20 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares closed 1.8% higher on Friday and posted their biggest weekly gain in two months, as China's policy measures and a weaker dollar boosted investor sentiment.

** The won jumped and snapped a six-week falling streak, while the benchmark bond yield fell.

** The KOSPI ended up 46.95 points, or 1.81%, at 2,639.29, marking the highest close in two weeks. For the week, it rose 1.35%.

** Risk sentiment improved amid eased downside factors like the Ukraine crisis and China's lockdown, while China also showed that the country is now in a time of economic stimulus policies, said Mirae Asset Securities' analyst Seo Sang-young.

** China cut its benchmark reference rate for mortgages by an unexpectedly wide margin.

** Among heavyweights, technology giant Samsung Electronics rose 0.74% and peer SK Hynix gained 1.35%, while battery maker LG Energy Solution and its parent company LG Chem surged 4.45% and 8.57% each.

** S-Oil lost 0.93% after the oil refiner suspended production of several processing units due to a blast at its Onsan refinery.

** Foreigners were net buyers of 194.0 billion won ($153.29 million) worth of shares on the main board.

** The won was last quoted at 1,268.1 per dollar on the onshore settlement platform, up 0.76%.

** The currency strengthened by 1.27% against dollar for the week. It also marked the fastest weekly gain since mid-March.

** In offshore trading, the won was quoted at 1,267.8 per dollar, down 0.4%, while in non-deliverable forward trading, its one-month contract was quoted at 1,267.3.

** In money and debt markets, June futures on three-year treasury bonds rose 0.15 point to 105.44.

** The most liquid 3-year Korean treasury bond yield fell by 3.3 basis points to 3.013%, while the benchmark 10-year yield fell by 6.2 basis points to 3.245%. ($1 = 1,265.5900 won) (Reporting by Jihoon Lee; editing by Uttaresh.V)