Short Interest in Microsoft Hits Decade High Ahead of Earnings
0xBroomberg
About 92 million Microsoft shares are sold short — the highest level since May 2015. With almost no covering ahead of earnings, the market's core doubt is whether massive AI spending can translate into profit.
How large is the short position?
S3 Partners data shows roughly 92 million shares of Microsoft are currently sold short, or 1.27% of the public float.
That is the highest since May 2015 and the largest short-interest increase among the "Magnificent Seven."
This means → short capital is concentrating on Microsoft specifically, not spreading across the big-tech group.
Why aren't shorts covering before earnings?
Microsoft reports after the U.S. close on Wednesday, yet shorts have shown virtually no covering — bearish bets are still building.
In plain terms = normally before earnings, shorts buy back some shares to lock in gains and cut risk. This time they are staying put, which signals high conviction that the report will disappoint.
This reflects a deep structural doubt about whether Microsoft's AI spending can convert to profit — not a short-term trade.
How did Alphabet's report spill over to Microsoft?
Last week Alphabet raised its 2026 capex guidance and reported accelerating cloud growth, yet its stock fell nearly 8%.
The market read was blunt: more spending = longer payback = lower profit expectations. Microsoft dropped 3% in sympathy.
Evercore ISI head of internet research Mark Mahaney wrote that Alphabet's capex increase "raises the probability that Amazon and Microsoft take similar action."
This means → investors treat all three cloud giants as one bet — when one raises spending, the risk pricing for the other two rises too.
How big is Microsoft's own AI bill?
CEO Satya Nadella's management team projects full-year capex and finance leases of roughly $190 billion.
About $25 billion of that is tied directly to component cost increases from tight AI chip supply.
In plain terms = just the "chips are scarce and prices are up" line item adds $25 billion — before counting normal expansion.
Why is this earnings report a make-or-break moment?
Year to date, Microsoft stock is down more than 18%, trailing the S&P 500 by nearly 25 percentage points.
Against that backdrop, whether this report can show a visible return signal on AI investment will determine if the market keeps discounting or re-prices upward.
This means → this is not just a quarterly print — it is the market's verification window for whether the AI spending spree is paying off.
Content is for reference only, not financial advice.