Goldman Sachs’ Peter Callahan breaks down the Nasdaq-100’s explosive 4-day V-shaped rally

The Nasdaq-100 just pulled off the kind of move that makes portfolio managers spill their coffee. A gain of approximately 945 basis points, roughly 9.45%, in just four trading days. That’s a V-shaped recovery sharp enough to give whiplash to anyone who sold the dip too early.

Peter Callahan, a Goldman Sachs veteran of roughly 20 years who specializes in the Technology, Media, and Telecommunications sector, laid out the mechanics behind the rally. His analysis points to four converging forces: improved technicals, cleaner positioning, better valuations, and stronger fundamentals. In English: the charts looked ready for a bounce, too many traders had already exited, prices had gotten cheap enough to attract buyers, and the actual business numbers backed it all up.

What drove the snap-back

Positioning played an equally important role. When too many market participants are already short or underweight a sector, it doesn’t take much good news to trigger a squeeze. The reduction in what Callahan describes as positioning overhang meant there was less selling pressure overhead and more fuel for any upward move.

Valuations had also become more attractive after the preceding drawdown. Large-cap tech names, which dominate the Nasdaq-100, had repriced to levels that started to look reasonable relative to their earnings trajectories. For a sector that often trades at premium multiples, any meaningful discount tends to bring buyers off the sidelines quickly.

Callahan, who has previously discussed the outlook for big tech stocks and AI-driven momentum, has long tracked how underlying business performance anchors these moves. Revenue growth, margin expansion, and capital allocation across the largest NDX constituents appear to have provided the confidence investors needed to commit capital aggressively over four sessions.

Why crypto traders should care about a Nasdaq rally

There’s also the AI angle to consider. Callahan has been vocal about artificial intelligence as a secular growth driver for large-cap tech. The same AI narrative that powers Nasdaq constituents also fuels interest in AI-adjacent crypto projects, decentralized compute networks, and GPU tokenization plays.

What to watch from here

For equity investors, the key metric to monitor is whether the improved fundamentals Callahan identified continue to show up in earnings reports and forward guidance from major tech companies.

Callahan’s two-decade tenure at Goldman Sachs gives his analysis weight in institutional circles. When a senior TMT specialist at one of the world’s most influential banks flags a rally of this magnitude and attributes it to a convergence of technical, positioning, valuation, and fundamental factors, it tends to shape how large allocators think about their portfolios.