The Kospi index dropped the most since March as North Korea reiterating its pledge to push forward with another nuclear test showed Moon Jae-in, the victor in Tuesday’s presidential vote, is unlikely to get a honeymoon. While Citigroup Inc. to Morgan Stanley are betting on further upside for South Korea’s record- setting stocks, analysts and investors are seeking more from Moon, who ran on a platform of corporate reform and rapprochement with North Korea.

“Markets will take this on the chin,” said James Soutter, who helps manage the equivalent of about $500 million at K2 Asset Management in Melbourne, referring to the election.
“Rumblings out of North Korea on further nuclear tests should have a bigger influence on markets than the election.”

While Korean technology shares rallied on bets Moon will bolster the sector as a way of delivering more jobs, the Kospi spiked lower, declining 1 percent Wednesday -- the most since March 3 -- as utilities and banks paced losses. Markets in Seoul were closed for the election Tuesday, so the drop came after a 2.3 percent surge in the Kospi on Monday, its best day since September 2015

Eoin Treacy's view

The South Korean Kospi Index has been ranging for six years but broke out ahead of the election to new all-time highs. Increased tensions with North Korea coinciding with a short-term overbought condition suggest there is scope for some consolidation of the recent run-up. However a sustained move below the trend mean would be required to question medium-term scope for additional upside. 

Samsung Electronics has been the clear large cap leader; breaking out to new highs in August. It is somewhat overextended at present so at least some consolidation is looking more likely that not, but a sustained move below KRW2 million would be required question the consistency of the medium-term advance. 

The Kospi Financials Index has lagged and pulled back from the psychological 500 level today. A sustained move to new six year highs would bolster the view that South Korea is moving into a broad based demand dominated phase.