A trader works on the floor of the New York Stock Exchange during afternoon trading on April 9, 2025 in New York.
Angela Weiss | Afp | Getty Images
A massive number of hedge fund short sellers rushed to close out their positions during Wednesday afternoon’s sudden surge in stocks, turning a stunning rally into one for the history books.
Traders — betting on share price declines — had piled on a record number of short bets against the U.S. stocks ahead of Wednesday as President Donald Trump initially rolled out steeper-than-expected tariffs.
In order to sell short, hedge funds borrow the security they’re betting against from a bank and sell it. Then as the security decreases in price from where they sold it, they buy it back more cheaply and return it to the bank, profiting from the difference.
But sometimes that can backfire.
As stocks soared on news of the tariff pause, hedge funds were forced to buy back their borrowed stocks rapidly in order to limit their losses, a Wall Street phenomenon known as a short squeeze. With this artificial buying force pushing it higher, the S&P 500 ended up with its third-biggest gain since World War II.
Coming into Wednesday, short positioning was almost twice as much as the size seen in the first quarter of 2020 amid the onset of the Covid pandemic, according to Bank of America. As funds ran to cover, a basket of the most shorted stocks surged by 12.5% Wednesday, according to Goldman Sachs, pulling off a larger jump than the S&P 500‘s 9.5% gain.
And a whopping 30 billion shares traded on U.S. exchanges during the session, marking the heaviest volume day on record, according to Nasdaq and FactSet data going back 18 years.
“You can’t catch a move. When you see someone short covering, the exit doors become so small because of these crowded trades,” said Jeff Kilburg, KKM Financial CEO and CIO. “We live in a world where there’s more and more twitchiness to the marketplace, there’s more and more paranoia.”
S&P 500
Of course, there were real buyers too. Long-only funds bought a record amount of tech stocks during the session, especially the last three hours of the day, according to data from Bank of America.
But traders credit the shorts running for cover for the magnitude of the move.
“The pain on the short side is palpable; the whipsaw we have witnessed the past few weeks is extreme,” Oppenheimer’s trading desk said in a note. “What we saw in tech on that rise was obviously covering but more so real buyers adding on to higher quality semis.”
Thin liquidity also played a role in Wednesday’s monster moves. The size of stock futures (CME E-Mini S&P 500 Futures) one can trade with the click of your mouse dropped to an all-time low of $2 million on Monday, according to Goldman Sachs data. Drastically thin markets tends to fuel outsized price swings.
Markets were pulling back Thursday as investors realized the economy is still in danger from super-high China tariffs and the uncertainty that daily negotiations with other countries will bring over the next three months.
There are still big short positions left in the market, traders said.
That could fuel things again, if the market starts to rally again.
“The desk view is that short covering is far from over,” Bank of America’s trading desk said in a note. “Our reasoning is that the market can’t de-risk a short in less than 3 hours which provided 20%+ SPX Index downside & major reduction in NET LEVERAGE over 7 seven weeks.”
“No shot it cleared in less than 3 hours,” Bank of America said.
David Solomon, CEO of Goldman Sachs, testifies during a Senate Banking Committee hearing at the Hart Senate Office Building in Washington, D.C., on Dec. 6, 2023.
Win Mcnamee | Getty Images
Goldman Sachs is scheduled to report first-quarter earnings before the opening bell Monday.
Here’s what Wall Street expects:
Earnings: $12.35 per share, according to LSEG
Revenue: $14.81 billion, according to LSEG
Trading Revenue: Fixed Income of $4.56 billion and Equities of $3.65 billion, per StreetAccount
Investing Banking Revenue: $1.94 billion, per StreetAccount
Goldman Sachs may prove to be a beneficiary of the recent market environment.
On Friday, rivals JPMorgan Chase and Morgan Stanley each topped expectations for first-quarter results on booming equities trading.
Equities trading revenue surged 48% and 45% at the banks, respectively, thanks to volatility in the opening months of President Donald Trump’s tenure amid his efforts to reshape global trade agreements.
Buoyant markets during most of the quarter, which ended March 31, should also support the bank’s wealth and asset management division, which CEO David Solomon has called the growth engine of the bank.
But markets have churned since Trump escalated trade tensions last week, sowing uncertainty across the world’s largest economy. Goldman shares have dropped 14% this year through Friday.
Analysts will be keen to hear what Solomon has to say about his conversations with corporate clients and institutional investors during the tumult.
This story is developing. Please check back for updates.
While U.S.-China trade tensions escalate , analysts predict a handful of Chinese companies could win out on Beijing’s efforts to double down on generative artificial intelligence. “We expect AI demand to stay strong as deepseek cost improvements have driven application development such that companies are seeing AI development as critical for growth and for competition,” Bernstein analyst Boris Van and a team said in an April 7 note. “We also expect the development for the AI+chip ecosystem to be a key push from the government to offset tariff impacts,” the analysts said. Chinese companies have rushed to try out DeepSeek’s generative artificial intelligence capabilities in the last few months. Some businesses have reported cost savings , and strategists expect that could help corporate earnings finally turn around. Bernstein’s two outperform-rated plays are Shanghai-listed Kingsoft Office, operator of word-processing app WPS, and Hong Kong-listed Kingdee , which sells software services for business management. The investment analysts pointed out that during the escalation in U.S.-China tensions during U.S. President Donald Trump’s first term, Chinese spending on local information technology increased as localization policies were announced, partly to offset tariff impacts on trade. “We could likely see a scenario where AI is the new critical technology that China will use to sustain further growth,” the Bernstein analysts said, noting that locally created systems such as the Huawei ecosystem could be promoted. The AI-integrated version of WPS reached 19.68 million monthly active users in mainland China last year, Kingsoft Office said in an annual report last month. The company has released a version of WPS for Huawei’s HarmonyOS Next operating system that claims to be independent of Android. Kingdee said in its annual report last month that it planned “a full pivot into an Enterprise Management AI company” this year. The company said in a filing last week that it gained new customers in the first quarter, including automaker Geely, spirits company Kweichow Moutai and 01.AI, an AI start-up founded by former Google China head Kai-Fu Lee. The Economist Intelligence Unit estimates China’s AI-related spending will grow by up to 25% annually this year and next, adding up to 0.13% of 2024’s nominal gross domestic product in economic output. Tariff tensions between the U.S. and China However, Goldman Sachs and Citi in the last week cut their forecasts for China’s economic growth this year given heightened tensions between the U.S. and Beijing. China on Friday hit back at yet another round of U.S. tariff increases with duties of its own . Both nations escalated their duties on one another’s goods to triple-digit rates . China said it planned to “ignore” subsequent U.S. tariff increases, but remained committed to retaliating if necessary on other U.S. actions. “The full-swing tariff war may hurt the macro economy and the ripple-effect may spread over to most of the economic sectors,” Nomura’s China technology research analyst Bing Duan and a team said in an April 7 note. “Meanwhile, we think domestic AI demand would remain buoyant, following DeepSeek’s innovation and China’s ambition for AI leadership.” “We like [internet data center]/Cloud companies the most as the demand is largely unaffected by the ‘reciprocal’ tariff,” Nomura said. Their buy-rated plays in the category include state-owned China Mobile and two U.S.-listed stocks: GDS and Vnet . Shanghai-based GDS, which develops and operates data centers in China, forecast revenue this year would rise by at least 9.4% to 11.29 billion yuan. Beijing-based Vnet said its net revenues from internet data center increased by 28.3% last year to 1.63 billion yuan. “The overall utilization rate of wholesale data center in Greater Beijing Area is projected to reach 85% as early as 2025, marking the first potential supply shortage in the market,” the company said in an earnings call, according to a FactSet transcript. Less than 5% of each of the companies’ revenue comes from the U.S., while the remainder primarily comes from China, the analysts said. “We think the key growth drivers for China’s cloud computing and IDC companies are the pent-up demand for computing power / infrastructure after DeepSeek was launched, which is not directly affected by the tariff hike,” the Nomura analysts said. “To mitigate the tariff impact on China’s export growth, the government may continue to encourage the investments to boost domestic growth, especially in digital infrastructure, including cloud computing & IDC infrastructure. Nomura’s second-most favored category is AI software and applications, where the analysts’ buy-rated plays are Hong Kong-listed Kingdee and Kingsoft Corp , parent of Kingsoft Office. — CNBC’s Michael Bloom contributed to this report.