YCI·Winpack +5% Rally, Hanmi Semiconductor Joins, How Far Will the HBM Move Go?

HBM-related stocks are heating up again.

At intraday (collection time: 2026-10-05 14:30 KST), flows into HBM-related names are highlighted, led by Hanmi Semiconductor and SK Hynix.

Retail investors ask, "Is this time for real for HBM names?"

The headlines give reasons to hop on.

Why are HBM names rising first?

YCI·Winpack 5% gains: headline basis

Some red flags at Hanmi Semiconductor: headline basis

SK Hynix and Hanmi Semiconductor rising together: headline basis

The view is that AI semiconductor demand feeds into HBM demand.

HBM is high bandwidth memory, essential for AI semiconductors.

What about global momentum?

US IT and semiconductor sector +1.05%: recent sector movement

Nvidia and Micron optimism: headline basis

Separate from strength in US energy and industrials, the IT and semiconductor strength is transmitting to domestic semiconductor stocks.

What risks to watch?

Monitor policy markets, crypto, and rate news together.

Polymarket: 100% bet that Fed will not cut rates in October (source: Polymarket)

Bitcoin ETF and crypto fund flows also deserve attention.

Retail asks, "So should I enter now?"

Momentum is ignited by news, but checking short-term catalysts and global variables is essential.

Quick data snapshot

KOSPI: 7,003.74 (+0.46%) [2026-10-02 closing]

KOSDAQ: 893.29 (-0.11%) [2026-10-02 closing]

US IT and semiconductor sector: +1.05% (recent move)

YCI·Winpack: 5% gains (headline basis, intraday)

Hanmi Semiconductor: some red flags (headline basis)

So, up or down?

Downward pressure

• US rate uncertainty - Polymarket 'no cut' 100%, weighing on risk assets

• Crypto flows - Ether weakness and ETF concentration, creating fund flow volatility

• Overheated buying - some names surged quickly, profit taking possible

Holding factors

• AI demand hopes - connection from Nvidia and Micron to HBM demand

• Real demand (headlines) - SK Hynix and Hanmi Semiconductor rising together

• Sector linkage - US semiconductor sector gains are spilling into domestic names

For reference only.

PickStock

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※ Figures are as of the time of writing and may change.

※ This article is for information only and is not investment advice.