Key Highlights

● Hedge funds sold short roughly five shares for every one they bought.

● Short leverage sits near its most extreme level of the past five years.

● The VIX jumped 2.35 points to 19.03, while the VVIX stood at 107.9.

● About two of every three S&P 500 stocks rose on Thursday.

Hedge-fund short positioning has rarely been this heavy. A major bank's data showed hedge-fund short leverage near its most extreme level of the past five years, with funds selling short roughly five shares for every one they bought.

The positioning data came into focus on Thursday, October 22, as artificial-intelligence and chip stocks were routed. The Nasdaq Composite sank 694 points to 26,008.86, its steepest drop since June 5, and the S&P 500 fell 93.74 points to 7,663.43, its worst day since July.

What the numbers mean

Short selling involves borrowing shares and selling them in the hope of buying them back later at a lower price. Short leverage measures how much of those bearish bets funds are carrying relative to their capital.

The ratio of short sales to purchases, at about five-to-one, shows funds have been adding bearish bets far faster than bullish ones. That puts short leverage close to the top of its range over the past five years, according to the bank's data.

Heavy shorting can reflect genuine pessimism, but it can also be part of hedging strategies, where funds short broad baskets or indexes to protect other positions.

The AI unwind

The data fits a pattern noted by other market watchers. "The dominant market dynamic in recent weeks has been the unwinding of AI-related positions by hedge funds," one bank strategist said.

Thursday's catalysts gave the bears fresh ammunition. Meta Platforms (NASDAQ:META) said on Wednesday that it expects 2026 capital spending of $135 billion to $145 billion and posted negative free cash flow of $2.12 billion. Lam Research (NASDAQ:LRCX) gave December-quarter guidance with a midpoint slightly below consensus, and the company cited supply constraints.

Nvidia (NASDAQ:NVDA) CEO Jensen Huang added to the debate. "The demand of the capital is much greater than the availability of the capital," he said. Nvidia was trading at $212.21 and was the single biggest drag on the S&P 500.

A crowded trade both ways

Extreme short positioning can cut both ways. If bad news keeps coming, shorts can profit. But if the news improves, funds may be forced to buy back shares quickly to limit losses, which can fuel sharp rallies known as short squeezes.

Some market watchers see opportunity in the gloom. One commentator said: "Buying the dip here has [a] pretty good record of working." Another was more measured, writing that "it will take more than one or two days to change the trend."

A broad defensive mood

Other indicators also point to caution. Clients of a major bank pulled a record $14.8 billion from single stocks, and a weekly survey of individual investors showed bears outnumbering bulls.

The VIX volatility index jumped 2.35 points to 19.03, while the VVIX, which tracks expected swings in the VIX itself, stood at 107.9.

Yet beneath the surface, many stocks held up well. About two of every three S&P 500 stocks rose, and consumer staples posted their best day since April 2025.

Earnings that could squeeze the shorts

Next week's calendar could test hedge-fund positioning. Microsoft (NASDAQ:MSFT) and Alphabet (NASDAQ:GOOGL) report on October 28, the same day as the Federal Reserve's rate decision. Amazon (NASDAQ:AMZN) and Intel (NASDAQ:INTC) follow on October 29, alongside third-quarter GDP and September PCE inflation data.

Strong results from the AI giants could force shorts to cover. Weak numbers or spending worries could reward the bears.