Micron Technology reported the strongest quarterly results in its history after the market closed on Wednesday. Revenue for the third quarter of fiscal 2026 reached US$41.46 billion, well above Wall Street's expectation of US$35.69 billion, representing an upside surprise of 16.2%. Earnings per share came in at US$25.11, also substantially exceeding analysts' consensus estimate of US$20.49, outperforming expectations by approximately 22.6%.

The strong results sent Micron shares up approximately 12.6% in after-hours trading to around US$1,180.97, compared with the regular-session closing price of US$1,047.20.

The timing of the earnings release was particularly noteworthy.

Just one day earlier, semiconductor stocks had broadly retreated from record highs amid growing concerns over the sustainability of AI-related spending.

SanDisk plunged 12.4% in a single session, while Western Digital fell 8.4%, as the sector experienced widespread selling pressure.

Micron itself dropped 13.2% on Tuesday.

The stock also failed to stabilize during Wednesday's regular trading session, closing down another 0.44%.

It was only after the earnings report was released that market sentiment completely reversed.

Micron's earnings significantly exceeded expectations, reflecting an extraordinary near fourfold increase in revenue compared with the same period last year.

The primary driver behind this performance has been persistent shortages of memory chips resulting from the continued boom in AI data center construction, which has driven memory prices sharply higher.

This dynamic has also fueled an extraordinary re-rating of Micron's valuation.

Over the past 52 weeks, Micron's share price has ranged from US$103.38 to US$1,213.56.

Prior to Wednesday's trading session, the stock had already gained approximately 700% over the previous year.

For investors, Wednesday's earnings report represented a high-stakes validation of the AI memory investment thesis.

The market's primary focus has now shifted to whether the strong after-hours momentum can carry into Thursday's regular trading session.

Investors will closely analyze Micron's fourth-quarter guidance to determine whether the current upcycle in memory pricing still has room to continue or is approaching its cyclical peak.

Market Analysis:

At present, Micron has not yet disclosed forward-looking guidance or commentary regarding pricing for its next-generation HBM4 products alongside the earnings report.

Major Wall Street investment banks are also expected to release updated price targets in the coming days.

In addition, the strategic customer agreements referenced during the earnings release warrant close attention, particularly details regarding the identity of the counterparties and the scale of those agreements.