KOSPI Jumps 6.63% Back Above 6,000: Why Did Foreigners and Institutions Pile In?

KOSPI 6,012.44, up 6.63% in a single day!

Let's start with why KOSPI surged, based on the confirmed close on October 28.

It is back above the 6,000 level.

KOSDAQ followed, closing at 771.28, up 3.69%.

Retail investor:

"Six percent in one day...? Is this real...?"

It is.

That's why this morning matters more.

October 28 KOSPI Close, By the Numbers

KOSPI: 6,012.44 (+6.63%)

KOSDAQ: 771.28 (+3.69%)

Foreigners and institutions: 1.7 trillion won net buying together

KOSPI's gain is nearly double KOSDAQ's.

The session tilted toward large caps.

Who Was Buying?

The headlines point to one answer: supply and demand.

Foreigners and institutions bought 1.7 trillion won together.

Twin buying means foreigners and institutions buying on the same day.

When two big players move in the same direction, the index tends to move sharply.

On the chip side, reports said semiconductor stocks came into focus after SK hynix earnings.

China's market also rallied together in robots and chips that day.

Was Robotics the Driver in KOSDAQ?

Intraday, news broke of surges in Hanla Cast and Rainbow Robotics.

The headline is that the humanoid theme heated up.

In China, policy tailwinds for humanoid commercialization blew through.

The same theme moved on both sides on the same day.

Did Only Memory Win Overnight in the U.S.?

IT and semiconductors: +1.70%

Consumer discretionary: +1.04%

Consumer staples: -0.92%

Energy: -2.05%

Even within chips, there was a split.

Nvidia fell while memory stocks rose, according to reports out this morning.

Earlier, reports also highlighted the appeal of chip stocks after TSMC earnings.

That's why the memory reaction at the open is worth watching first.

Will Samsung Earnings Decide Today's KOSPI?

Samsung's earnings release and U.S. inflation were flagged together as today's key issues.

Retail investor:

"After a 6% gain, isn't today just a breather?"

The numbers will tell us that...

I start with Samsung's earnings figures and the inflation release.

On Polymarket, the bet that the Fed will not hold rates steady after the December meeting stands at 82%.

In other words, more money is betting rates won't stay where they are now.

Watch whether the inflation data shakes that bet.

Release schedules are available on the market calendar.

So, Up or Down?

What weighs on it:

• KOSPI single-day +6.63%: profit-taking pressure after a sharp rally
• Nvidia: fell overnight, a split within chips
• U.S. inflation: flagged as a variable that could shape KOSPI's direction

What holds it up:

• Foreigners and institutions: 1.7 trillion won, twin buying confirmed
• U.S. IT and semiconductors: +1.70%, memory stocks strong
• Bitcoin: rebounded after a 770 million dollar outflow, per reports

Treat these as reference points only.

PickStock 💡

※ Investment decisions and responsibility rest with the investor.
※ Figures are as of the time of writing (2026-10-29 08:20) and may change.
※ This article is for informational purposes only and is not investment advice.