U.S. tech momentum stocks ripped higher on July 21, producing one of the sharpest reversals on Wall Street this year. Morgan Stanley’s TMT momentum factor surged more than 12% in a single session, its biggest one-day gain on record and stronger than any daily move seen during the 2000 dot-com bubble. Goldman Sachs’ high-beta momentum long index, or GSCBHMOM, rose about 8.5%, marking its best day since April 2025. Its long-short high-beta momentum index, GSPRHIMO, gained 9.5%, the strongest daily performance since 2021 and close to the highest levels seen since 2003.
The Nasdaq Composite climbed about 1.3%, leading the three major U.S. indexes. Semiconductors did most of the lifting. The Philadelphia Semiconductor Index advanced 4.6%, while the VanEck Semiconductor ETF added roughly 4.5%. Among individual names, Micron Technology jumped more than 10%, Intel gained about 8.6%, Sandisk rose around 14%, Cerebras Systems climbed roughly 18%, and Cipher Mining added more than 11%.
The rally came after three straight down sessions and after momentum stocks had already slumped 33% from their recent highs.
Short covering was a major force behind the move
To understand the rebound, the scale of the preceding selloff matters. Goldman Sachs data showed high-beta momentum stocks had fallen 33% in just a few trading days, one of the most severe drawdowns since the bursting of the dot-com bubble. Goldman’s high-beta momentum index had dropped below its 200-day moving average, hit its lowest level since January, and reached its most oversold condition since August of last year.
That kind of washout tends to create room for a violent snapback. In this case, the rebound was driven in large part by a short squeeze. Investors betting against momentum stocks, especially fast-moving traders in Korea and Japan, were hit hard over the past two weeks. The report said Korea even saw widespread margin calls, dealing a blow to local retail traders. As short sellers were forced to buy back positions, their covering helped feed a self-reinforcing rise.
Zacks Investment Research pointed to Micron Technology as one example of how the squeeze developed. The firm said Micron had broken below the neckline of a head-and-shoulders pattern on its daily chart, a bearish technical signal. But after the stock jumped more than 10% on Tuesday and moved back above that neckline, the setup flipped. “False breaks often trigger violent reversals because late shorts and short sellers get trapped,” the analysis said.
Big headline gains, but weak internals
The size of the move was striking. The internal structure looked much less convincing.
BTIG strategist Jonathan Krinsky said trading volume was light across the board. Volume in SPY, QQQ and the S&P 500 cash market all ran 20% to 30% below their 20-day average. At the same time, the S&P 500 rose nearly 1% even though declining stocks still outnumbered advancers. Krinsky said this year has produced more cases of divergence between price action and market breadth than usual, and Tuesday delivered another one.
Goldman traders reported that overall exchange volume was about 17% below the 20-day average. Market-maker book liquidity stood at just $6.83 million, and market activity scored only 3 out of 10.
That left the rally looking more like a concentrated burst in a narrow group of crowded positions than the start of a broad recovery.
Bloomberg macro strategist Michael Ball said it was “too early” to declare the correction finished. Demand for put options tied to semiconductor ETFs and earlier AI leaders remained elevated. Negative gamma exposure across the Nasdaq, semiconductor ETFs and related names meant dealers would be more likely to chase moves rather than damp them. That can intensify upside. It can also deepen the downside.
BTIG says fade the bounce; Goldman and UBS say the washout is nearing its end
Wall Street is split on what to do next.
Krinsky at BTIG explicitly recommended investors “fade” the move. He had argued earlier that momentum stocks would run into strong resistance in the 730 to 750 range, and Tuesday’s rebound pushed GSCBHMOM right to the lower end of that zone.
“Extreme volatility, along with historic single-stock dispersion, are signs the market is going through a broad correction,” Krinsky said. He expects high-beta momentum names to stall once they move deeper into that resistance area between Wednesday and Thursday.
He also pointed to a historical pattern. Since 1999, there have been only 10 cases in which the high-beta momentum long index gained more than 7% in a day while staying above its 200-day moving average. Three of those happened this year, three came in early 2021, and three occurred in early 2000. Krinsky said the data “shows both how unusual this move is and how often we keep seeing statistical features that echo the 1999 to 2000 period.”
Goldman Sachs and UBS took a more constructive stance. Goldman’s Julia Mensch wrote in a report that the bank had already flagged last week that the momentum unwind was entering its later stage. “With positioning now significantly cleared out — Goldman prime brokerage data show momentum exposure at the 64th percentile of the past year and the 93rd percentile of the past five years — and with no new fundamental catalyst behind this selloff, we think momentum has room to revert back toward its long-term trend, making this selloff a potential opportunity to add momentum exposure or buy AI stocks on weakness,” she wrote.
UBS head of hedge fund equity derivatives sales Michael Romano made a similar point in a client note, saying improving AI fundamentals were a buy signal. He still urged caution on execution. Investors should build positions gradually rather than rush in all at once.
“Momentum de-risking is and remains a compelling call. Scaling in is the prudent course,” Romano wrote. He expects the momentum selloff to bottom by the end of July, if it has not already bottomed. “Once the tape turns, I expect liquidity to drive an overshoot higher.”
Even Goldman did not sound fully relaxed. With volatility still elevated and earnings season arriving in force, the bank said investors should consider using limited-loss structures to gain exposure instead of holding outright long positions.
Earnings are the next major test
Whether the rebound can last may depend heavily on this week’s earnings.
According to Reuters, 113 companies in the S&P 500 are due to report this week, representing about 18% of the index’s market capitalization. Alphabet’s earnings are being treated as the most important data point of the week, with investors focused on its full-year 2026 capital expenditure guidance. The report said expectations are for that figure to move higher, a signal the market will use to gauge the path of AI spending.
Adam Turnquist, chief technical strategist at LPL Financial, said the market focus is no longer limited to total capex. “The next focus will be return on investment and the quality of spending, and we think that will become a central issue in the second half,” he said.
He also said semiconductor stocks are likely to remain volatile because overbought conditions need to be worked off, profit-taking pressure should emerge, and crowded positioning still needs to clear. “From a fundamental perspective, we do not think much has materially changed,” he said.
Reuters also reported that 66 S&P 500 companies had already released earnings, with about 88% beating analyst expectations. 3M rose more than 9% in a single day and General Motors gained about 5%, both helped by better-than-expected results.
Bond yields and oil prices add another layer of risk
While stocks rallied, the bond market sent a more cautious message.
U.S. Treasury yields rose across the curve. The 2-year yield added 5 basis points and the 30-year yield rose 2 basis points. Long-end yields climbed to a two-month high, erasing the gains Treasuries posted after softer-than-expected inflation data last week.
Oil was part of the reason. Brent crude futures settled back above $90 a barrel for the first time since June 11. Tensions in the Middle East continued to build. Yemen’s Houthi forces announced a blockade of the southern entrance to the Red Sea, and two tankers carrying Saudi crude turned back in the Red Sea. MarineTraffic data from Kpler showed that even before the blockade announcement, cargo loadings through the Bab el-Mandeb Strait had already fallen 34% over the previous two weeks.
Izaac Brook, an interest-rate strategist at RBC Capital Markets, said, “Today’s price action was driven mainly by the continued rise in energy prices.” He added that moves in rates were amplified by breaks above closely watched technical levels — 4.20% on the 2-year yield and 4.60% on the 10-year yield — as well as the typically thin liquidity of summer trading.
Bloomberg’s Cameron Crise warned that long-dated yields were near a point where 5% could shift from resistance to support, with 5.5% as the next obvious target. “That will hit equities, especially if stronger-than-expected economic growth pushes yields higher and weighs on stocks,” he said.
Goldman IG credit head Kevin Boova also warned that credit spreads for mega-cap tech companies had widened to new highs, adding that the hyperscale cloud, AI and data-center segment “feels a bit fragile again.”