📊 Micron and the Memory Market Moving in Tandem - 2026.10.31

Hi, it’s Dotori 🌰 Let’s start with the big picture. SanDisk reported strong results, so why did Micron’s stock fall again? That’s where this story begins.

🔗 Why stocks fell alongside strong results

TipRanks reported that Micron, SanDisk, and SK Hynix shares fell again on October 30 despite SanDisk’s strong results ^[1]. Barron’s also noted that Micron shares had slipped again, emphasizing that surging memory prices aren’t all good news ^[2]. In other words, rising prices and rising stock prices aren’t automatically the same thing.

Looking at the price data, the October 30 closing price was $883.95, with a change of -5.39%. The previous day, October 29, closed at $934.27, while on October 28, the day before that, the stock had climbed as high as $983.23. That’s quite a wide swing over just a few days—a bit like riding a roller coaster 🎢

⚙️ Memory’s gears mesh directly with neighboring gears

Structurally, Micron is tied to the same memory-market gears, so news about competitors is quickly passed along to the next gear. Newsis reported that fallout related to Samsung also shook Micron’s stock, and that Cramer viewed the move as excessive selling that could present a buying opportunity ^[3]. The point to keep in mind is that Cramer’s view is just his opinion. It’s not something the company has confirmed, and what actually happens is a separate question.

Center director Kim Jang-yeol released a video examining why Samsung and SK Hynix shares fell especially sharply compared with Micron ^[5]. That’s an individual expert’s interpretation, so I’ll simply pass it along as such. Looking one step deeper, it suggests that even within the same memory sector, differences in who gets hit first and who gets hit later can drive stock performance apart.

🏭 Brokerage views and differences across the value chain

There’s also news that Bank of America selected Micron Technology as its top pick in the memory sector ^[4]. That should be viewed as BofA’s opinion alone. A video also pointed out that while memory prices continue to rise, the U.S. midterm elections, interest rates, oil prices, and neocloud risks are adding to semiconductor volatility ^[6]. It’s a curious combination: prices are rising, but the market is shaky.

Dotori’s take is that breaking the value chain into pieces reveals varying degrees of benefit. In my interpretation, the first priority is Micron itself, with its direct exposure to memory prices; second is the segment linked to Samsung and SK Hynix earnings and share prices; and third are external factors such as AI data-center demand, interest rates, and policy. This is just my own ordering, not a definitive ranking.

📚 Questions that remain

So here’s the question: if memory prices keep rising, why can’t stock prices rise along with them? The key variables are how much of the price increase flows through to earnings, and whether a top-pick rating can hold up even as competitors falter. Let’s take a calm look at whether this connection is still intact as things unfold.

📰 Reference News (4)

📺 Reference Videos (2)

5

YouTube

Why Samsung and SK Hynix Fell Especially Harder Than Micron [Center Director Kim Jang-yeol]

▶부읽남TV_내집마련부터건물주까지·2026.10.30

6

YouTube

[Full Version] Semiconductors Stumble Again After a 6% Surge? Investment Strategies to Reassess Now (Park Se-ik, So Hyeon-cheol, Lee Hyeong-su) | Stock Premier League (Filmed October 26)

▶김작가 TV·2026.10.29