A shares in a day, Korean shares in a day, and three days for the global storage industry: How ChangXin’s 3.28 trillion yuan smashed Samsung and SK hynix’s valuation in one night—ending an era

Have you ever seen one company flip an entire industry’s pricing power beyond recognition within a single day?

July 27, A shares. ChangXin Technology’s IPO listing day.

Closing price: 49 yuan, up 465.82% from the issue price of 8.66 yuan.

Full-day trading volume: 141.1 billion yuan—A-share history’s first stock to exceed 32.8k yuan in a single day.

Total market cap: 3.28 trillion yuan, about $32.8k.

In a day, it overtook Industrial and Commercial Bank of China, overtook Guizhou Moutai, overtook Tencent, and overtook Intel.

Topped the A-share market by market cap.

This is not an IPO. This is A shares “voting on pricing” for domestic storage localization.

But this drama has only just started.

That very night when ChangXin closed—across the ocean, U.S. stocks opened.

Storage stocks collectively avalanched—

SanDisk plunged 11.02%, down 47% from its June all-time high, with market value evaporating by about $484.6B within a month.

SK hynix’s ADR fell as much as 10%, dropping below the issue price—trading started less than three weeks ago, yet it broke issue price.

Micron fell 2.25%, while Western Digital and Seagate dropped more than 4%.

The Philadelphia Semiconductor Index fell 2.23%.

This isn’t contagion of sentiment.

It’s capital recalculating—“After China’s storage capacity enters, what does the global supply-demand balance sheet look like?”

ChangXin’s share of global DRAM revenue in Q1 2026 jumped from roughly 3% in the same period last year to 8%, ranking fourth globally. And according to broker forecasts, by the end of 2028 this figure could reach 18%.

Why would an 8% player’s IPO make industry giants fall together?

Because the market knows—8% is just the starting point.

The real heavyweights are coming on July 28.

Korean markets open.

The KOSPI index instantly plunged by more than 8%, triggering a circuit breaker and pausing trading for 20 minutes.

This is the eighth circuit breaker event for the Korean stock market this year; in July alone, there have already been three consecutive incidents.

On the heavyweight stocks front—

SK hynix plunged more than 11%.

Samsung Electronics sank nearly 9%.

Together, the two pulled the entire Korean benchmark into a bottomless pit.

Meanwhile, Japan’s stock market crashed in sync. The Nikkei 225 dropped more than 4%; Kioxia’s stock price once plunged 18%—in July, it marked the sixth single-day drop of more than 10%.

Overnight, from Shanghai to Silicon Valley, from Silicon Valley to Seoul, from Seoul to Tokyo—the valuation system for the global storage industry was rewritten by one Chinese company.

But it’s not that simple.

ChangXin’s shockwave happens to hit the most fragile time point in the Korean market.

What have Korean stocks gone through over the past half year?

Since 2026, Korean exchanges have initiated 36 temporary trading halts, triggering 7 market-wide circuit breakers—more than half of the total historical count.

The KOSPI volatility index has risen 281.8% since December last year.

On July 13, the KOSPI fell 8.95% in a single day again, triggering yet another circuit breaker.

On July 16, Korea’s Financial Supervisory Service announced a ban on new single-stock leveraged ETFs.

The Korean stock market is undergoing a “continuous and painful” deleveraging.

And right at this moment—

ChangXin arrived.

In the past, the valuation premium for Samsung and SK hynix relied on the monopoly narrative of “the world’s only three DRAM suppliers.” Now, for the first time, this story has a clear benchmark competitor and counterpart.

The “Korean two heroes” narrative is no longer exclusive.

Even more painful is that Samsung and SK hynix are about to post their earnings reports.

SK hynix will disclose its Q2 results on July 29.

Samsung Electronics will publish its full Q2 earnings report on July 30.

These two earnings reports were supposed to be a victory banquet for an “AI storage super-cycle”—with the market expecting both businesses to achieve the fastest revenue growth rate since 2010.

But ChangXin’s 3.28-trillion-yuan monster is right in front of you—

No matter how good your performance is, can you block the narrative of a “China-style Samsung” rising?

In the past, the global storage market told the story of “three giants.” Samsung, SK hynix, and Micron—three-way division, pricing power in hand, making money while lying back.

Now, the fourth player has pushed the door open.

And behind this player is the market of 1.4 billion people, the nation’s team capital, and the entire imagination space behind the four words “independent and controllable.”

On ChangXin’s first day of listing, A-share storage sector stocks faced collective pressure: Beijing Junzheng Innovation fell 5%, while Xuanqi Technology and Primil Parts Co. also dropped in tandem.

But the upstream in the industry chain exploded collectively—Yangke Technology hit the daily limit; meanwhile, core suppliers such as Aepu Technology and Shanghai Silicon Industry rose together.

Capital is “voting with its feet”: who is the real leader, and who is just riding a theme—clear at a glance.

The next two key timing points will determine whether this round of repricing is “done in one day” or “has just begun”—

First, ChangXin’s next-day performance. On July 28, ChangXin opened down 7.71% to 45.22 yuan, and its market cap fell back to 3.02 trillion yuan. Is this a temporary pullback or a trend reversal?

Second, the earnings reports of Samsung and SK hynix. On July 29 and 30, the two sets of answers come out. What the market wants to see is not how high revenue is—what matters is: faced with ChangXin as a new rival, what is your “city defense strategy”?

The power structure of the global storage industry is being redrawn within 48 hours.

And you and I just happen to be standing on the dividing line.

Do you think Samsung and SK hynix’s earnings reports can withstand the valuation shock brought by ChangXin? #直通IPO第二期JerseyMikes #长鑫今日上市成交901亿 #夏日创作营 $SKHY $SAMSUNG $CXMT