Micron's earnings report was explosive, sending global chip stocks soaring! But that's a separate matter from whether you should chase the Science and Technology Innovation Board chip stocks today.

Let's start with the conclusion: last night, Micron (the American memory chip giant) delivered a blockbuster earnings report—revenue of $41.46 billion, up about 3.5 times year-over-year, next-quarter guidance exceeding expectations by 13%, after-hours stock price up over 13%, driving a surge in global chip stocks, Nasdaq futures up nearly 2%. It's highly likely that A-share chip stocks will open higher today. However, this event validates the logic of the "Micron link" and does not mean the chip stock you're chasing today, which has already risen significantly, is safe—this is a different matter from whether you should chase it.
Why it matters to you: At today's market open, stocks like SMIC, Hygon, and Cambricon are likely to open higher and keep rising, with many hitting the daily limit-up. You'll probably feel the urge to jump in, pushed by the sentiment of "good news realized, it's now or never." This article helps you think clearly: what you should look at before rushing in.
What happened
Micron proved that the demand for AI storage is real—the shortage of HBM (High Bandwidth Memory, a key component for AI computing power) will persist beyond 2027. This is hard data; the direction is solid.
Why you shouldn't chase directly
First, Micron delivered its own performance, which doesn't mean the logic behind your stock has been validated or that its price is safe. They're all called "AI chips," but the substance differs greatly: Micron's free cash flow surged 1597%, Nvidia's operating margin is 64%, they can withstand pressure; while AMD's operating margin is only 11.7%, a big gap.
Second, prices are no longer cheap. Micron is up about 800% this year, SK Hynix over 1000%. Performance validation does not mean the current buying price is safe—these are two different things.
Third, positions are relatively high. The STAR 50 Index in A-shares already rose 3.82% yesterday, and the ChiNext's RSI (an indicator measuring short-term overbuying) is approaching overbought territory. A high-open, high-run on the day of good news realization is often the short-term peak (i.e., "good news is exhausted"). Additionally, the PCE (the US inflation gauge) is set to be released tonight at 20:30, with expectations leaning strong, which could pressure high-valuation tech stocks.
What you should do
One, do not chase stocks that open high, keep rising, and see huge volume at the open; if you really want to participate, use only profits already earned, small positions, and in batches.
Two, only buy companies whose earnings and cash flow are real; avoid stocks whose main business is something else but suddenly claim to be an AI chip concept.
Three, set a trigger condition for yourself: if tonight's core PCE ≥ 3.4%, or if chip stocks open high and close low tomorrow, with leading stocks not rising, then sell off the portion you chased today; if not, just hold a tiny position to follow along.
Ultimately, first distinguish one thing: are you chasing Micron's already-realized earnings, or the yet-unrealized story of your stock? If you can't tell, the best action is to do nothing for now, wait for tonight's data to come out.

$Micron Tech(MU.US)