MU surpassed one trillion, and the 239% surge was a celebration or a bubble

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MU surpassed one trillion, and the 239% surge was a celebration or a bubble

Monday, June 15, 2026

A memory chip stock jumped 10.84% in a single trading day, closing at $1,087.99, pushing its total market value past the trillion-dollar threshold. This scene once belonged only to stars like Nvidia, but now it is on Micron (stock code MU).

Even more glaring, its year-to-date gain has approached 239%, with the stock price hitting a record high, and there are still nine full days until it finally releases its June 24 earnings report. So here's the question: Is today's big bullish candlestick betting on a financial report that is bound to exceed expectations, or is it just a group of funds hyping up each other in sentiment?

Latest price $1087.99 ▲ +10.84%

Year-to-date gains +239% ▲ Setting a new all-time high

Price-to-earnings ratio About 46 times higher ▲ Significantly higher than the industry average

Selling memory but betting on AI computing power — "water, electricity, and coal"

Micron is one of the few companies worldwide capable of mass-producing both DRAM and NAND memory simultaneously. Its business is divided into four major units: cloud memory, core data centers, mobile and client, and automotive and embedded. Terminals are laid out from data centers all the way to mobile phones, automotive, and industrial equipment.

Supporting this round of price increases is its technological positioning in high-bandwidth memory (HBM) and CXL memory—these two types of products are the "high-speed channels" that large model training and inference cannot avoid, and traditional DDR memory is hard to replace. The report gave it an 8 out of 10 for irreplaceability.

The company's technical signage is written very plainly

1-year DRAM and G9 NAND process technology lead the way, offering higher density and lower power consumption, combined with the Crucial brand's consumer channels. Together, these form the high wall of customer switching.

You can think of Micron as the "water pipeline" in an AI factory: no matter how fast the chip is, if it can't feed enough bandwidth into memory, the computing power is just idling. So, when the whole world is racing to build AI factories, why don't pipeline suppliers raise prices?

How much of the future has valuation already been overdrawn?

Based on a stock price of $1,087.99, the market cap is about $1.1 to $1.2 trillion, with a price-to-earnings ratio (P/E) ranging from 46 to 51 times, a price-to-sales ratio (P/S) of 22.37 times, and an enterprise value multiple (EV/EBITDA) of 40.70 times. Several common valuation anchors are all above the semiconductor industry average.

What's even more worth considering is the free cash flow yield (FCF yield) of only 1.14%. This means that compared to a market value of over a trillion yuan, the company's annual free cash flow only covers a thin layer of returns, and the stock price has already priced in several years of high growth into today.

But the other side of the coin is just as real

Free cash flow in FY2025 reached $17.52 billion, a year-on-year increase of 106%, surpassing the net profit of $8.54 billion that year. The cash conversion efficiency is astonishing, and the company can fully support expansion and R&D through internal cash generation.

So should the market discount it with a 46x P/E ratio, or a premium with "sold HBM orders"? This is exactly the question the June 24 earnings report will answer for investors.

Is the stock price during the breakout phase or the sentiment during the breakout phase?

The research report marks Micron as entering the "breakthrough" phase: products have moved from proof of concept to large-scale commercial delivery. In the first fiscal quarter of FY2026, revenue grew 69% quarter-on-quarter, net profit increased 163% quarter-on-quarter, and HBM and CXL memory secured substantial orders for data centers and AI supercomputing.

The technical side also supports this judgment. The 50-day moving average is about $677, the 200-day moving average is about $382, and the current price of $1087.99 is nearly three times the 200-day moving average—the trend is undisputed upward, but this steep deviation is a double-edged sword: the more consensus, the more intense the stamping during pullbacks.

On the table of the Big Three, is Micron the cheapest card?

Memory is a typical oligopoly table, with the DRAM and NAND markets long dominated by Samsung, SK Hynix, and Micron, along with NAND-focused companies Kioxia and Western Digital (SanDisk).

In the most critical battleground of HBM, SK Hynix holds about 45% of the market share, Samsung about 35%, and both lead Micron in scale and unit cost. But this year's turning point is that NVIDIA has certified Micron, Samsung, and SK Hynix for HBM4 supply rights for the next-generation Vera Rubin platform, effectively placing Micron on the top-tier supplier list.

What's intriguing is the valuation gap—SK Hynix's price-to-earnings ratio is about 30 times, Samsung's is about 25 times, and Kioxia's is about 20 times, all clearly lower than Micron. When selling AI memory, why is the market willing to pay the highest price for Micron? This is a question that bulls must answer directly.

How high is the ceiling, and where is the penetration rate?

The report estimates the global memory market size at about $1.5 trillion, with DRAM accounting for about $800 billion and NAND about $600 billion, while truly attractive HBM and CXL high-bandwidth memory currently account for only about $100 billion.

The driving force is AI: This high-speed memory segment is expected to grow at a compound annual growth rate (CAGR) of 30% to 35% from 2026 to 2028, with the HBM market approaching $100 billion by 2028. Micron's current HBM market share is about 15%. If it can push it above 20% through capacity expansion, the corresponding incremental revenue will be the foundation for this round of valuation imagination.

Why shouldn't the bulls get off the table?

Supporting the high valuations is a series of hard-to-refute hard data and structural trends:

▲ Bull Case

The bears were staring at the cracks

But once you shift the focus away from the growth curve, the downside risks are just as clear:

▼ Bear Case

The trio of financial reports, HBM4, and geopolitical easing

In the coming months, MU's stock price will be dominated by three types of events: whoever pays first will have the say in the next phase:

• June 24 after-hours FQ3 earnings report: Guidance revenue of about $33.5 billion, gross margin of about 81%, a key battle to verify the authenticity of the "HBM supercycle."
• Sovereign nations and enterprise-level AI infrastructure continue to expand (expected 2026–2027): directly amplifying high-bandwidth memory procurement, with a positive impact
• NVIDIA HBM4 certification rollout and Vera Rubin platform volume expansion: The impact is positive, but Micron needs to compete with SK Hynix and Samsung for competition
• Recently, sentiment in the semiconductor sector has been boosted by easing geopolitical tensions, but this is just a tailwind for sentiment, and sustainability is questionable

From $300 to over one trillion—how did this curve come about?

Rewinding to the end of 2023, Micron's stock price was still around $300, and by the first quarter of 2026, it had soared above 1,000 yuan, with cumulative returns exceeding 250%, and the year-to-date increase approaching 239%.

Almost all the turning points are on the fundamental rhythm

FY2024 net profit was only $78 million, then jumped to $8.54 billion in FY2025, a 997% increase, and then Q1 net profit was $13.79 billion, coinciding with the release of HBM supply capacity and rising AI memory prices. Meanwhile, the P/E ratio has risen from about 20 times in 2024 to 46 to 55 times today—not just profits, but the valuation multiples the market is willing to pay.

⚠️ Risk Notice It is important to clearly recognize that the memory industry's strong cyclical nature means that today's mid-60% price increase may also reverse contraction in the future; With a price-to-earnings ratio of 46 times and nearly 185% premium over the 200-day moving average, the stock is extremely sensitive to any earnings report or guidance that falls short of expectations; Combined with ongoing pressure from competitors in scale and cost, as well as the refinancing variable of concentrated maturing long-term debt, the downside potential should not be underestimated. This article is solely an analysis and information sharing based on publicly available information and does not constitute any investment advice. The market carries risks, so decisions should be made cautiously. Please make independent judgments and bear your own profits and losses.

🟡 Neutral Strong fundamentals and overdraft valuations are both true, and the outcome is uncertain before the earnings report is released.

💬 Discussion A P/E ratio of 46 times—do you bet it will cash out or pull back?

Data source

• Daily Market Snapshot and Order Books (Platform live_data, Close $1087.99 / +10.84% on 2026-06-15)
• Micron's latest quotes, market cap, and price-to-earnings ratio (stockanalysis.com / CNBC / Robinhood, reported on 2026-06-15 ~$1,063, market cap ~$1.11T, P/E ~46, all-time high $1,079.57 on 6/3): https://stockanalysis.com/stocks/mu/
• "Why MU Rose Today" and analyst target prices (StockStory / QuiverQuant, Susquehanna $1,750, Raymond James $1,100, DA Davidson $1,000, Cantor $1,500): https://stockstory. org/us/stocks/nasdaq/mu/news/why-up-down/micron-mu-shares-skyrocket-what-you-need-to-know-4
• FQ3 2026 Earnings Preview and Guidance (TechTimes / GuruFocus, 6/24 after-hours, Revenue ~$33.5B, Gross Margin ~81%, EPS ~$19.15): https://www.techtimes.com/articles/318228/20260611/ micron-earnings-preview-june-24-tests-whether-hbm-supercycle-real-cresting.htm
• HBM sold out, HBM4 certification and market share (Investing.com / TipRanks, 2026 HBM multi-year long-term contracts sold out, NVIDIA certification Micron/Samsung/SK Hynix): https://www.investing.com/analysis/ microns-soldout-hbm-supply-makes-the-bull-case-hard-to-dismiss-200681391
• Business Structure, Valuation Models, Competitors, and Cash Flow Details: Market-lens Research Report (MU, generated on 2026-06-15)