The Kospi climbed 0.91 percent to close at 6,690.12 on Oct. 1, adding 60.25 points as foreign investors bought a net 845.9 billion won worth of shares for a third consecutive session. Chip heavyweights Samsung Electronics and SK hynix led the advance, reversing part of Tuesday’s 1.38 percent drop that had been driven by a 1.46 trillion won foreign net sale.

Trading opened firmer after Korea Customs published a record September export figure overnight and as U.S. futures steadied despite a federal government shutdown that revived talk of another Federal Reserve rate cut. Institutions added a net 220 billion won while individuals sold a net 1.09 trillion won, the familiar pattern when offshore funds return to Seoul’s mega-cap names.

From Tuesday’s air pocket

On Sept. 30 the index had touched 6,750 intraday before closing at 6,598.87, handing back an early rally tied to U.S. technology earnings. Oil-price anxiety and a hawkish read on U.S. rates had pushed foreigners to lighten Korea exposure after the Chuseok holiday.

Wednesday’s rebound did not fully repair that technical damage, but it showed dip buyers still exist when trade data cooperate. Samsung Electronics rose 2.5 percent and SK hynix gained 3.6 percent in session wraps cited by local brokers, while shipbuilders and select financials posted smaller gains.

Flow math still fragile

Foreigners have been the swing factor all quarter. A three-day buying streak is encouraging for bulls, yet the amounts are modest compared with trillion-won sale days that can appear when hedge funds rebalance currency hedges or when Brent crude spikes.

The Kosdaq added 0.69 percent to 1,200.58 on the same day, with biotech and smaller chip designers participating but without the same foreign intensity as the main board.

Macro overlays

Analysts at Shinhan Securities noted in morning notes that September’s 12.7 percent export jump gave cover for risk assets even as the won traded near 1,403 per dollar, slightly weaker than the prior close. Bond yields ticked up a basis point or two on the long end, a sign the equity rally was not purely a rate-cut bet.

Energy importers remain sensitive to Middle East headlines; any renewed climb in crude could quickly test whether foreigners keep buying chips if the won weakens further.

What the close implies

A finish above 6,690 leaves the Kospi between Tuesday’s intraday high and the Sept. 30 close, a range that technical traders will watch through the rest of the week. Fund managers said the next catalyst is third-quarter earnings guidance from memory makers, not another customs print.

For retail investors who absorbed Tuesday’s slide, Wednesday’s session was a reminder that Korea’s headline index still moves with a handful of offshore accounts and two chip stocks—no matter how strong the export headline looks on paper.