* KOSPI rebounds from 19-month low

* Korean won little changed against U.S. dollar

* South Korea benchmark bond yield inches down

* For the midday report, please click

SEOUL, June 21 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares rebounded on Tuesday to close higher, mostly led by institutional investors' dip-buying after a steep drop to a 19-month low in the previous session. The Korean won weakened slightly, while the benchmark bond yield inched down.

** The benchmark KOSPI ended up 17.90 points, or 0.75%, at 2,408.93, after touching its lowest since early-November 2020 on Monday.

** Institutional buying led the rise, which was a technical rebound at best with no meaningful change in macroeconomic conditions, said Bookook Securities' Analyst Lee Won.

** Among key economic data points, South Korea's exports for the first 20 days of June shrank 3.4% on-year, while imports increased 21.1%, bringing the trade balance to a $7.64 billion deficit, customs agency data showed on Tuesday.

** The Bank of Korea, meanwhile, expects inflation to be higher than its earlier projection and said it would closely assess debt repayment burdens to determine whether a half-percentage point rate hike in July was appropriate.

** Among heavyweights, technology giant Samsung Electronics fell 0.34% but peer SK Hynix rose 0.74%, while battery maker LG Energy Solution added 0.36%.

** Foreigners were net sellers of 319.5 billion won ($247.00 million) worth of shares on the main board, while institutional investors net bought 541.5 billion won.

** The won was quoted at 1,293.6 per dollar on the onshore settlement platform, down 0.09%.

** In offshore trading, the won was quoted down 0.2%, while in non-deliverable forward trading its one-month contract was quoted at 1,292.3.

** In money and debt markets, June futures on three-year treasury bonds fell 0.04 point to 103.76.

** The most-liquid 3-year Korean treasury bond yield fell by 3.2 basis points to 3.663%, while the benchmark 10-year yield fell by 0.4 basis point to 3.773%. ($1 = 1,293.5200 won) (Reporting by Jihoon Lee; editing by Uttaresh.V)