* KOSPI falls for 4th straight session, foreigners sell
* South Korea bond yields down
* Korean won drops versus dollar
* For the midday report, please click
SEOUL, Oct 26 (Reuters) - South Korean shares fell for the fourth consecutive session on Friday as gains on Wall Street failed to inspire investors in the Asian trading day, with worries about local earnings worsening.
The main KOSPI index tumbled 1.75 percent, or 36.13 points, to end at 2,027.17, leading to a cumulative decline of 6.2 percent over the four sessions.
On a weekly basis, the index fell 5.99 percent to mark the fourth straight weekly loss.
“Earnings released so far were disappointing, except for chipmakers and some financial companies, and this is causing worries about the companies due to report their performance soon,” said Rhoo Yong-seok, an analyst at KB Securities.
On Thursday, the country’s biggest automaker Hyundai Motor announced a near 70 percent drop in its third-quarter net profit, sending its stocks to almost nine-year lows.
On Friday, chemical shares fell sharply on concerns that U.S. tariffs on Chinese goods would demand from China for Korean exports. LG Chem and Lotte Chemical Corp fell 4.6 percent each.
Foreigners were net sellers of 178 billion won ($171.80 million) worth of shares, while local institutions bought 131.9 billion won worth of shares.
The junior KOSDAQ index ended 3.5 percent lower.
The country’s won was quoted at 1,141.9 per dollar on the onshore settlement platform at the end of the session, down 0.34 percent from the previous close at 1,138.0.
On a weekly basis, the won weakened 0.86 percent against the dollar, marking the fourth straight session of depreciation. From the beginning of this month, it has dropped 2.9 percent.
The dollar has risen 7.2 percent against the won this year. The won’s high for the year is 1,053.55 per dollar on April 2 2018 and low is 1,146.26 on Oct. 11.
In money and debt markets, December futures on three-year treasury bonds rose 0.07 points to 108.71.
The Korean 3-month Certificate of Deposit benchmark rate was quoted at 1.7 percent, while the benchmark 3-year Korean treasury bond yielded 1.954 percent, lower than the previous day’s 1.98 percent.
$1 = 1,141.3600 won Reporting by Hayoung Choi; Editing by Choonsik Yoo and Sam Holmes