Short sellers boost bets on Magnificent 7 as 3 tech giants report

Short sellers have piled into Meta Platforms Inc., Microsoft Corp. and Amazon.com Inc. ahead of their quarterly earnings this week, betting the tech giants will disappoint.

"The positioning is unusually concentrated ahead of these three reports," said Sarah Lin, equity markets analyst at Edgen. "Short sellers are testing whether AI monetization can justify the valuations."

Meta and Microsoft report after the closing bell Wednesday, July 29, followed by Amazon on Thursday, July 30. The three companies are part of the Magnificent 7 group that has lagged the broader S&P 500 this year — the Roundhill Magnificent Seven ETF has gained less than 2% in 2026, trailing the S&P 500's 10% return — even as their earnings growth has outpaced the rest of the index. The Mag 7 are expected to report aggregate earnings growth of about 31% in the second quarter, a slowdown from 63% in the first quarter but still ahead of the Other 493's 23% growth.

The short positioning creates a binary outcome. If the companies beat estimates, a short squeeze could amplify gains. If they miss, the concentrated bearish bets could accelerate declines, dragging down the Nasdaq and S&P 500 given the trio's combined market capitalization. The stakes are especially high after Tesla Inc. and Alphabet Inc. kicked off Mag 7 earnings last week with mixed results — Tesla missed profit estimates by a wide margin while Alphabet topped expectations.

The short interest buildup follows a period of underperformance for mega-cap tech. The Magnificent 7 stocks have accounted for the vast majority of the S&P 500's gains in recent years, but uncertainty about the return on massive AI investments has weighed on the group in 2026. Alphabet shares are down about 15% from their May peak despite reporting better-than-expected second-quarter revenue of $119.8 billion and Google Cloud revenue that surged 82% to $24.77 billion.

Tesla's results underscored the pressure. The EV maker reported adjusted earnings of 33 cents per share, well below the 55-cent consensus, as AI investments squeezed profits. Revenue fell 26% to $28.24 billion. Tesla shares dropped 4% in after-hours trading following the release.

For this week's reports, investors will focus on cloud revenue growth at Microsoft and Amazon, advertising trends at Meta, and each company's capital expenditure plans. The hyperscalers — Alphabet, Microsoft, Amazon and Meta — reported strong results across the board last quarter, but their stocks mostly languished as investors focused on rising capex.

"The revenue and earnings numbers are likely to not matter as much as the amount of capital spending completed in the quarter and the guide for the rest of the year," Wolfe Research analysts wrote last week.

The short positioning raises the stakes for all three companies. If Meta, Microsoft and Amazon deliver guidance that justifies their AI spending, the bearish bets could unwind quickly. If they fall short, the selloff could be sharp. Investors will get the first read on Meta and Microsoft after the close Wednesday.

This article is for informational purposes only and does not constitute investment advice.