Finance

Stock hedge funds post big one-day drop in DeepSeek rout, say Goldman data

Published by Global Banking & Finance Review

Posted on January 29, 2025

3 min read

· Last updated: January 27, 2026

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Stock market decline graph highlighting hedge fund losses in technology shares - Global Banking & Finance Review
A visual representation of the significant one-day drop in hedge fund stock values due to a rout in global technology shares, as reported by Goldman Sachs. The image illustrates the impact of the emerging Chinese AI model on hedge funds focusing on company fundamentals.
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By Nell Mackenzie LONDON (Reuters) - Hedge fund stock-pickers lost billions of dollars on Monday in a rout in global technology shares sparked by the emergence of a low-cost Chinese artificial

Hedge Funds Experience Significant Losses Amid Tech Stock Rout

By Nell Mackenzie

LONDON (Reuters) - Hedge fund stock-pickers lost billions of dollars on Monday in a rout in global technology shares sparked by the emergence of a low-cost Chinese artificial intelligence model, according to a Goldman Sachs trading update and industry figures on Tuesday.

Hedge funds that pick stocks based on company fundamentals rather than using algorithms to trade systematically were down 1.1% Monday, as markets sank, Goldman's trading desk said, a significant one-day drop for funds that in a good year like 2024 make 15%.

Goldman Sachs does not reveal dollar figures for the size of the hedge funds its teams track, but data from hedge fund research group BarclayHedge suggest the losses from Monday's sell-off could tally into the billions.

Assets under management for hedge funds that take long and short positions - bets on an asset either increasing or decreasing in value - reached $176.7 billion at the end of the third quarter of 2024, according to BarclayHedge.

Long-only hedge fund manager assets reached $672.9 billion in the same period, their website said.

Stock-picking hedge fund returns are up 1.5% for the year so far, said the bank. These are hedge fund managers who invest based on the economic health of markets and companies, rather than charting price movements.

Many of these hedge funds had crowded into the same bets that the biggest tech stocks would increase in value.

While this pile-on has fallen from its peak in 2023, concentration in these trades before the rout was still high compared to pre-pandemic levels, Bank of America said a separate note on Friday.

Big global investors listed hedge funds crowding into so-called "Magnificent 7" trades as a top concern, said a BofA note on Friday. This group of the largest U.S. companies by market value counts Nvidia, Apple and Microsoft among its ranks.

Nvidia slumped 17% on Monday, which cost the company almost $600 billion in market value - the largest single-day drop in market capitalisation for any company on record.

Monday's selling in U.S. single stocks was the largest Goldman Sachs had seen in roughly six months and in some of the highest levels of the past five years, the bank said in its note.

Hedge funds fled tech stocks for the third straight session on Monday, squeezed out of long positions that had become too risky to hold, the bank said.

Systematic managers whose algorithms read and trade on charts and market volumes finished Monday up 1.7% having started the week largely short markets and also having dropped bets against riskier, or more volatile, stocks, it said.

(Reporting by Nell Mackenzie; Editing by Amanda Cooper and Chizu Nomiyama)

Key Takeaways

  • Hedge funds lost billions in tech stock rout.
  • Goldman Sachs reports significant one-day drop.
  • Nvidia's market value slumped by $600 billion.
  • Systematic managers gained from market movements.
  • Crowded bets in tech stocks remain a concern.

Frequently Asked Questions

What caused the recent drop in hedge fund stock-picking?
The drop was sparked by a rout in global technology shares due to the emergence of a low-cost Chinese artificial intelligence model.
How much did hedge funds lose on the reported Monday?
Hedge funds that focus on stock-picking were down 1.1% on Monday, with substantial losses reported by Goldman Sachs.
What is the current asset management level for hedge funds?
As of the end of the third quarter of 2024, assets under management for hedge funds that take long and short positions reached $176.7 billion.
What was the impact of Nvidia's stock drop?
Nvidia's stock plummeted 17% on Monday, resulting in a nearly $600 billion loss in market value, marking the largest single-day drop for any company on record.
What trend did Goldman Sachs observe in hedge fund trading?
Goldman Sachs noted that hedge funds were fleeing tech stocks for the third consecutive session, indicating a shift away from risky long positions.

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