The Nasdaq 100 ripped nearly 9.45% in four straight trading sessions through Aug. 4, turning a bruising July reset into one of the year’s sharpest tech reversals and pushing the S&P 500 to a fresh record close. The move added roughly $3.5 trillion to the Nasdaq 100’s market value, according to the Bloomberg headline framing the surge, as investors raced back into megacap technology after earnings, AI enthusiasm and a cleaner positioning backdrop collided at once.
What had been a market defined by caution changed fast. July’s de-risking left investors lighter on exposure, and when earnings momentum held up, the stampede reversed. By the Aug. 4 close, the Nasdaq 100 had gained about 3.5% in a single session, while the S&P 500 finished at 7,600.50, its 25th record close of 2026 and its first fresh high since June 2, ending a 42-session gap. That kind of acceleration is forcing traders to reconsider whether the tech trade was simply paused or merely reloaded.
The speed of the move is now the story. Goldman Sachs trader Peter Callahan pointed to four drivers behind the rally: cleaner positioning, improved technicals, more reasonable valuations, and better fundamental visibility after earnings. On valuations, the Nasdaq 100 forward price-to-earnings multiple is roughly 10% below its five-year average, giving buyers a fresh argument that the group had room to run even after months of dominance. The setup helped transform skepticism into urgency almost overnight.
The most visible expression of that urgency was the renewed chase for the “Magnificent Seven.” Those mega-cap tech stocks rose nearly 10% over the four-day stretch, and the Roundhill ETF tracking the group posted about a 10% gain over the period as well. Amazon’s market cap moved back to $3 trillion, while Nvidia’s returned to $5 trillion. For a market already hypersensitive to AI spending and cloud demand, the symbolism matters: the biggest names are not just holding up, they are dragging the whole index with them.
This was not a slow grind higher. It was a squeeze. The rally was amplified by one of the largest four-day short squeezes since late 2025, with a “Spot Up, Vol Up” pattern that signaled FOMO-driven call buying. A veteran volatility trader told Investing.com, “The market went from GTFO to full FOMO in four days.” That shift captures the mood swing better than any chart. When traders who were hiding in cash begin chasing upside at the same time, the feedback loop can be brutal.
Another veteran equity volatility trader, quoted by Wall Street View/Eastmoney, said, “They used four days to go from ‘run quickly’ to ‘fully chasing the rally’… this is not sustainable.” That warning matters because the same mechanics that amplify upside can unwind just as fast if earnings momentum slows or macro data disappoints. For now, though, the market is rewarding anyone willing to own beta again. The speed of the rebound has left latecomers with little choice but to pay up.
Earnings were the spark, but AI optimism was the fuel. The market’s turn came as investors reassessed whether the recent selloff had gone too far in pricing the scale of spending and monetization tied to artificial intelligence. Strong tech results gave buyers confidence that demand remains intact, and the megacap complex did the rest. In a market this concentrated, a few heavyweights can change the tone for the entire index almost instantly.
That is why the rebound in Nvidia and Amazon matters beyond the headline market-cap milestones. These companies sit at the center of AI infrastructure, cloud spending and platform demand. Their resurgence tells investors the trade is still alive, even after a volatile summer stretch. The Nasdaq 100’s four-session advance is not just a relief rally; it is a reminder that AI remains the market’s dominant narrative whenever earnings arrive without a crack in the story.
The tech rebound also got help from outside tech. Falling oil prices reduced one of the market’s biggest macro stress points, with WTI crude falling 5.11% to $80.34 a barrel on Aug. 3. That slide was tied to U.S.-Iran Hormuz negotiations, according to market reports, and it helped ease fears that energy shocks would force a more defensive posture across equities. When oil cools, growth stocks usually breathe easier, and this week was no exception.
Michael Monaghan, portfolio manager at Founders 100 ETF, said in a quote carried by Wall Street View/Eastmoney: “As they say, bull markets climb a wall of worry, and we’ve had plenty of worry over the past few weeks. But the forced selling from Situational Awareness seemed to put a floor under the market, and I think we’re seeing all the data points lining up more constructively.” The point is simple: once the market stopped being forced to sell, it became free to buy.
The key test now is whether the rally can survive the next round of data and headlines. U.S. June JOLTS job openings, the trade balance, factory orders and durable goods figures are all in the mix, and they arrive just as traders are trying to decide whether the rebound is the start of a new leg up or a violent snapback inside a still-choppy tape. If growth data stays firm and inflation pressures remain contained, the chase could continue. If not, the “fully chasing the rally” crowd may discover how quickly momentum fades.
There is also the geopolitical piece. Ongoing U.S.-Iran Hormuz negotiations remain unresolved, with Qatar confirming draft language circulating but no final agreement reached. That leaves an energy risk premium in play, even after crude’s decline. Markets have a habit of acting as though one problem at a time is manageable. But when technology is surging, oil is swinging and macro data are pending, the margin for disappointment shrinks fast.
For now, the tape is saying the bulls are back in control. Adam Turnquist, chief technical strategist at LPL Financial, put it plainly: “We broke through 7,600 — that’s what matters, that was the top of the range.” That level has now been cleared, and the Nasdaq 100’s four-day, multi-trillion-dollar surge has reset the conversation. The question is no longer whether tech can bounce. It is whether investors want to keep paying up after the fastest stampede of the summer.
