Microsoft Short Interest Hits Decade High as $190 Billion AI Capex Bet Faces Earnings Test

Microsoft short interest hit 92 million shares, or 1.27% of the float, the highest level since May 2015 and the largest short position among the Magnificent Seven, as the stock trades near $393 ahead of fiscal Q4 earnings. The company guided for $190 billion in calendar-year 2026 capital expenditures, a 61% increase from 2025, with CFO Amy Hood attributing $25 billion to higher component pricing, while Azure grew 40% year-over-year and the AI business reached a $37 billion annual run rate.

Microsoft Short Interest Hits Decade High as $190 Billion AI Capex Bet Faces Earnings Test - Microsoft short interest stands at 92 million shares, or 1.27% of the float — the highest level since May 2015 and the largest short position among the Magnificent Seven 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings - The stock is down more than 18% year-to-date and trails the S&P 500 by roughly 25 percentage points, trading near $393 ahead of today's after-hours earnings release 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings - Microsoft guided for $190 billion in calendar-year 2026 capital expenditures, 61% above 2025, with $25 billion attributable to higher component pricing 3 https://finance.yahoo.com/markets/stocks/articles/microsoft-plans-190-billion-capital-214300784.html - Azure grew 40% year-over-year in fiscal Q3 with management guiding 39-40% constant-currency growth for Q4, while the AI business hit a $37 billion annual run rate 3 https://finance.yahoo.com/markets/stocks/articles/microsoft-plans-190-billion-capital-214300784.html - Consensus expects fiscal Q4 revenue of $87.4 billion and adjusted EPS of $4.33, which would extend streaks of 13 consecutive revenue beats and 15 straight EPS beats 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings Bearish bets against Microsoft have climbed to their highest level in more than a decade, with approximately 92 million shares sold short — 1.27% of the company's public float — as investors brace for fiscal fourth-quarter earnings after the close on Wednesday 1 . The short interest figure, the largest among the so-called Magnificent Seven mega-cap tech stocks, marks the most elevated positioning since May 2015 . 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings The buildup comes with virtually no short covering ahead of the report, an unusual signal that bears are holding firm in their conviction that Microsoft's massive AI infrastructure spending will not translate into commensurate returns 1 . The stock has fallen more than 18% year-to-date, trailing the S&P 500 by roughly 25 percentage points, and last traded near $393 . 2 https://www.cnbc.com/2026/07/28/microsoft-short-interest-hits-decade-high-ahead-of-q2-earnings.html Microsoft guided for total capital expenditures of approximately $190 billion for calendar year 2026, a 61% increase from the prior year, with CFO Amy Hood attributing roughly $25 billion of that to higher component pricing for memory and storage 3 . Fiscal Q4 capex alone is expected to exceed $40 billion . The question facing investors today is whether Azure cloud growth and AI monetization are scaling fast enough to justify the spend. 3 https://finance.yahoo.com/markets/stocks/articles/microsoft-plans-190-billion-capital-214300784.html The Short Interest Buildup At 92 million shares, Microsoft's short interest dwarfs that of its mega-cap peers and represents the largest bearish position against the company in over a decade 1 . The lack of short covering heading into earnings is notable: in prior quarters, bears typically trimmed positions in the days before Microsoft reported, given the company's track record of 13 consecutive quarterly revenue beats and 15 straight EPS beats . 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings The persistence of the short position reflects a broader investor debate about whether Big Tech's AI capital expenditure cycle has outrun demand. The concern intensified after Alphabet raised its own 2026 capex forecast while reporting accelerating cloud growth, stoking fears of an industry-wide spending arms race with uncertain payoffs 1 . Microsoft shares traded at approximately 23 times earnings as of late July, down from more than 35 times at their 2024 peak, reflecting the market's recalibration of the AI premium 3 . Options markets are pricing a roughly 7.2% move in either direction on the earnings release . 2 https://www.cnbc.com/2026/07/28/microsoft-short-interest-hits-decade-high-ahead-of-q2-earnings.html What Wall Street Expects Analysts project fiscal Q4 revenue of $87.4 billion, up 14% year-over-year from $76.4 billion, within Microsoft's own guidance range of $86.7 billion to $87.8 billion 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings 4 . Consensus adjusted earnings per share stand at $4.33, compared to $3.65 in the year-ago quarter . 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings The critical metric is Azure and cloud services growth. In fiscal Q3, Azure revenue accelerated to 40% year-over-year growth, with management guiding for 39% to 40% constant-currency growth in Q4 3 . Microsoft's AI business separately hit a $37 billion annual revenue run rate in Q3, growing 123% year-over-year . Any deceleration in either figure would validate the bears' thesis. 3 https://finance.yahoo.com/markets/stocks/articles/microsoft-plans-190-billion-capital-214300784.html Despite the elevated short interest, several analysts remain constructive. Patrick Walravens at Citizens maintains a $550 price target, arguing CEO Satya Nadella's 'AI sovereignty' strategy justifies a premium valuation 1 . John DiFucci at Guggenheim Partners projects 39-40% Azure growth and holds a $586 target . 1 https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings The $190 Billion Question Microsoft's $190 billion capex guidance for calendar 2026 places it second only to Amazon among hyperscalers and represents the core of the bear case 3 . The four largest hyperscalers — Google, Amazon, Microsoft, and Meta — collectively plan to spend $725 billion on capital expenditures in 2026, up 77% from the prior year's $410 billion . 5 https://finance.yahoo.com/sectors/technology/article/meta-microsoft-amazon-and-alphabet-are-about-to-spend-a-shocking-amount-of-money-to-dominate-the-ai-era-115359575.html Bulls point to Microsoft's supply-constrained posture as evidence that the spending is demand-driven rather than speculative. Fiscal Q3 showed $82.9 billion in revenue with 18% growth, $38.4 billion in operating income with 20% growth, and EPS of $4.27, up 23% 3 . Operating margins have held despite the capex surge, a key distinction from previous capital-intensive cycles. For bears, the risk is straightforward: if AI workload growth slows or pricing pressure emerges from competition, the return on $190 billion in infrastructure becomes far harder to justify. Today's report — and more importantly, initial fiscal 2027 guidance — will be the next data point in that debate. What to Watch Tonight Microsoft will publish results after the market close on July 29, with a conference call at 2:30 p.m. Pacific Time 4 . Beyond the headline revenue and EPS figures, investors will focus on three areas: Azure growth rate trajectory, Copilot enterprise adoption metrics, and any initial color on fiscal year 2027 spending and revenue expectations. With 92 million shares sold short, the setup creates asymmetric risk in either direction. A strong beat with maintained or raised guidance could trigger a short squeeze, while any sign of AI demand softening would validate what has become the most crowded bearish trade in mega-cap tech. Companies mentioned Further sources 1 Benzinga: Microsoft Short Interest Hits Highest Level Since 2015 as Bears Dig i… ↗ https://www.benzinga.com/trading-ideas/movers/26/07/60766912/microsoft-short-interest-hits-highest-level-since-2015-as-bears-dig-in-ahead-of-earnings 2 CNBC: Microsoft short interest hits decade high ahead of Q2 earnings as AI spen… ↗ https://www.cnbc.com/2026/07/28/microsoft-short-interest-hits-decade-high-ahead-of-q2-earnings.html 3 Motley Fool / Yahoo Finance: Microsoft Plans $190 Billion of Capital Spending T… ↗ https://finance.yahoo.com/markets/stocks/articles/microsoft-plans-190-billion-capital-214300784.html 4 Microsoft Investor Relations: Microsoft announces quarterly earnings release da… ↗ https://news.microsoft.com/source/2026/07/08/microsoft-announces-quarterly-earnings-release-date-68/ 5 Yahoo Finance: Meta, Microsoft, Amazon, and Alphabet are about to spend a shock… ↗ https://finance.yahoo.com/sectors/technology/article/meta-microsoft-amazon-and-alphabet-are-about-to-spend-a-shocking-amount-of-money-to-dominate-the-ai-era-115359575.html The stories that matter, in one email. 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