KOSPI Down 3.59%, Yet Batteries Surged: Why Samsung SDI Jumped?

KOSPI fell 3.59%, yet batteries stood out.

Today's battery rally comes down to one headline.

"Samsung SDI, LG Energy Solution and other battery stocks surge... outlook for a Democratic win in the U.S. midterms draws attention"

The report ran at 14:17 on November 4.

This piece reflects data as of 14:30 KST on November 4, 2026.

The market took a beating yesterday.

Investor: "It fell that hard yesterday, so why are batteries the only ones celebrating?"

The answer lies across the Pacific, in an election.

Let's go through it step by step.

How Far Did KOSPI Fall on November 3?

KOSPI: 5,648.79 (-3.59%)

KOSDAQ: 704.39 (-4.08%)

Both are confirmed closing prices for November 3.

KOSDAQ took the bigger hit.

This morning's market headline also read "KOSPI rebounds after 3.59% plunge." (Source: Nov 4, 07:58 market outlook report)

The variables in focus were Nvidia's gain and the U.S. midterm vote count.

Intraday index levels are not in the source, so only yesterday's close is shown.

Why Did Samsung SDI and LG Energy Solution Rise? (Source: Nov 4, 14:17 stock feature report)

The headline cites one driver.

An outlook for a Democratic win in the U.S. midterms.

Midterm elections are congressional votes held midway through a U.S. president's term.

The logic: if the balance in Congress shifts, policy direction could shift too.

Batteries caught a ride on that "direction," which is the gist of the headline.

The key point is that this is still an outlook.

The vote result is not yet confirmed.

Did the Solid-State Battery Theme Spread?

The heat spread into materials too.

13:26 report → Hopes for solid-state battery commercialization lift Daejoo Electronic Materials and Lee Su Specialty Chemical

13:56 report → Rising demand expected for aluminum foil used in batteries, drawing attention to non-ferrous metal stocks

Solid-state batteries use a solid electrolyte instead of a liquid one, making them a next-generation battery design.

Aluminum foil is a very thin aluminum sheet that holds the cathode material.

From cells to materials to metals, the chain connected within a single day.

Who Won and Who Lost in U.S. Sectors?

Consumer Discretionary: +2.41%

Financials: +1.86%

Materials: +1.76%

Healthcare: -0.15%

IT/Semiconductors: -2.95%

Energy: -3.96%

These are U.S. sector figures for the most recent trading day.

Materials gained, while IT/semiconductors and energy lost ground.

Domestic chips are splitting by individual stock rather than moving as a whole sector. (Source: Nov 4, 09:58 report, "Semiconductor equipment stocks... buying diverges by stock")

Which Numbers Are Worth Watching?

Bets on a 25bp hike after the Fed's December meeting: 76% (Polymarket)

Ethereum ETFs: net outflows for 6 straight trading days (Nov 4, 07:10 report)

Long-term Treasuries: closed stronger as safe-haven demand grew after the KOSPI drop (Nov 4, 09:47 report)

Polymarket is a prediction market where people bet money on probabilities.

A 76% chance of a hike means concern over funding costs is fairly high.

Investor: "If it's election hopes that lifted these, what happens when the count is done?"

That is the point I watch.

Once an outlook turns into a result, the weight of the catalyst gets repriced.

It is also worth remembering that the battery rally rests on one election.

So, Up or Down?

Pressing down

• KOSPI: -3.59%, the shock from yesterday's drop still lingers
• KOSDAQ: -4.08%, small and mid-cap sentiment weakens
• Fed hike bets: 76%, a tightening-pressure catalyst

Holding up

• Battery stocks: surged intraday on election outlook
• Solid-state hopes: warmth spreading to materials stocks
• U.S. materials: +1.76%, sector strength

If you want to follow battery leaders, you can continue with Theme Leaders and Related Stocks.

For reference only.

PickStock 💡

※ Investment decisions and responsibility rest with the investor.
※ Figures reflect the time of writing and may change.
※ This article is for information only and is not investment advice.