Micron's Blockbuster Guidance Collides With a 99% Strike Mandate in Taiwan

Micron shares slip 4.8% amid a semiconductor selloff, even as Q4 revenue hit $54.23B and buybacks were expanded to $35.16B.

Micron Technology's stock has been one of the great momentum trades of the year, up 265% since January. That run hit a speed bump Thursday, when the memory-chip maker's shares shed 4.8% as a broader semiconductor selloff took hold. Rising US Treasury yields, firmer oil prices and a weak Asian handoff all weighed on sentiment — and the trigger from Asia was hard to miss: rival Samsung Electronics had just posted preliminary results that fell short of what the market was expecting. Adding to the jitters, reports about OpenAI's revenue trajectory raised fresh doubts about how the massive capital spending on AI infrastructure will ultimately be financed.

Yet the pullback sits against a business that is firing on nearly every cylinder. Micron closed fiscal 2026 with revenue of $133.19 billion, a figure that reflects genuine scarcity in high-bandwidth memory (HBM) and server DIMMs. The fourth quarter alone contributed $54.23 billion. Management expects that momentum to carry into the new fiscal year, and for the first quarter of fiscal 2027 it has guided to $61.5 billion in revenue with diluted GAAP earnings per share of $37.84.

A Bull Case That Now Demands Proof

At these levels, valuation leaves little room for disappointment. The stock trades at EUR 919.60 in European dealings, having pulled back 17% from its record high. The easy phase of the rally — pure euphoria — has given way to a more discriminating assessment. Investors want hard evidence that the AI infrastructure boom can sustain operating performance beyond the current year, and any shift in the capex budgets of the big technology companies flows straight through to memory-chip suppliers.

The central debate is whether today's margins can last. If pricing power holds, Micron can keep posting extraordinary profits. But history is unkind to semiconductor margins once additional capacity reaches the market or customers stretch out their orders — the sector remains cyclical, even if data-center demand is currently masking that pattern.

The optimistic case rests on a multi-year supply shortfall. Management has indicated that memory supply conditions in fiscal 2027 and 2028 could be even tighter than in fiscal 2026, a view shared by parts of Wall Street. Gil Luria, an analyst at DA Davidson, reaffirmed his buy rating last Wednesday and lifted his price target from $2,100 to $3,000, citing the multi-year AI demand wave and expected chip production bottlenecks through 2028.

Buybacks, a Patent Truce and a Strike Vote

Micron is also shoring up its capital structure. On Thursday the board authorized an increase in the discretionary share repurchase program to a total of $35.16 billion, with buybacks under the expanded authorization permitted from December 9, 2026. The move is subject to restrictions under CHIPS Act funding agreements and does not obligate Micron to acquire any shares. A program of that size signals balance-sheet confidence and provides a dependable source of demand for the company's own stock.

On the legal front, Micron reached a settlement with Netlist on Tuesday in their long-running patent dispute. The company will license the patent portfolio for five years against quarterly payments of $30 million, totaling $600 million through the third quarter of 2031. The resolution removes a legal overhang, though it ties up capital.

Less settled is the situation at the Taoyuan plant in Taiwan. Union members voted Wednesday to authorize a strike in a bonus dispute, with 1,994 of 2,012 participating members backing the measure, according to media reports. No date has been set and a surprise walkout is being considered. Micron has said it takes employees' concerns seriously and will continue the dialogue. Even so, any production disruption in the high-tech segment carries tangible supply risks.

December 9 as the Next Marker

The coming months should determine the stock's medium-term direction. As long as demand for AI memory chips outstrips capacity and gross margins stay elevated, the fundamental foundation holds. If the major data-center operators rein in their spending, or if labor action causes supply-chain delays, the correction could sharpen.

For market participants, the next concrete checkpoint is December 9, 2026, when buybacks under the expanded $35.16 billion authorization may begin. Until then, signals on actual demand from the cloud giants will set the tone.