Micron and Sandisk Surge as Samsung Strike Threat Worsens Global Memory Chip Shortage

TLDR

• Micron and Sandisk shares rose after Samsung union talks collapsed.
• Samsung workers are threatening a strike from May 21 to June 7.
• Jefferies estimates a strike could cut global memory-chip output by 3%.
• AI demand continues driving tight supply for high-bandwidth memory chips.
• Analysts remain divided on whether Micron stock is overvalued after its rally.

(SeaPRwire) –   Micron shares climbed in premarket trading on Wednesday amid growing concerns about a potential labor strike at Samsung, which could further tighten the global supply of memory chips.

Micron Technology, Inc., MU

Sandisk shares also gained as investors responded to news that negotiations between Samsung and its labor union had failed.

Samsung employees are demanding larger profit-linked bonuses. Union representatives are seeking to remove legal restrictions before initiating a general strike between May 21 and June 7.

According to Jefferies, a strike could reduce worldwide memory-chip production by approximately 3%.

This potential disruption occurs while memory-chip supply is already strained due to increasing artificial intelligence demand.

Micron has emerged as a major beneficiary of the AI infrastructure boom, especially through its high-bandwidth memory products used in advanced AI systems.

The company’s entire high-bandwidth memory supply for 2026 has already been sold out, as recently stated by the firm.

AI Demand Continues to Drive Memory Market

Investors have significantly boosted Micron shares over the past year due to surging revenue and earnings.

Micron stock has increased by more than 800% over the last 12 months and recently surpassed $800 per share for the first time.

Revenue nearly tripled compared to the previous year, rising from $8 billion in fiscal second quarter 2025 to $23.8 billion in 2026.

The company remains one of only a few firms capable of producing advanced high-bandwidth memory chips required for AI data centers.

Sandisk may also benefit if Samsung experiences production disruptions since the two companies compete in the NAND flash memory market.

South Korean chipmaker SK Hynix also saw gains in local trading following reports of the breakdown in Samsung union negotiations.

Analysts Debate Micron Valuation

The sharp rise in Micron shares has led to分歧 among analysts regarding whether the stock is now too expensive.

Micron’s trailing price-to-earnings ratio has risen to around 35, above its five-year average.

Some investors express caution because memory-chip markets have historically experienced boom-and-bust cycles.

However, optimistic analysts highlight Micron’s forward price-to-earnings ratio of 7.6 and PEG ratio of 0.26 as indicators that the stock may still be fairly valued.

Analysts also suggest that AI demand could sustain stronger memory pricing and supply conditions than in earlier cycles.

Management has characterized current market conditions as a “supercycle” fueled by AI infrastructure spending.

Investors are expected to continue tracking Samsung labor negotiations, AI server demand, and memory-chip pricing in the coming weeks.