Stock markets in Europe and U.S. wrap best quarter since 2020

European and U.S. equities posted their strongest quarter since 2020, led by technology and AI stocks. Energy shares lagged due to uncertainty in the Middle East, keeping sector performance mixed. The discussion turns to what may drive the second-half path for valuations and corporate earnings as leadership remains concentrated in AI.

Analysis

The biggest market signal is not just risk-on, but concentration: a narrow set of AI/mega-cap winners likely drove a disproportionate share of the quarter’s returns, which usually means index-level momentum is more fragile than the headline suggests. That tends to favor continued inflows into passive and systematic products for another few weeks, but it also leaves the tape vulnerable to any earnings season that fails to validate the multiple expansion with upward guidance revisions.

Energy’s weakness despite geopolitical uncertainty looks less like a clean fundamental call and more like positioning and narrative override. That creates a cheap hedge setup: if Middle East risk re-prices crude even modestly, the first-order beneficiary is energy, but the second-order loser is long-duration tech through higher real yields and renewed inflation pressure. Small caps, cyclicals, and consumer discretionary are the other exposed pockets because they have less pricing power and less balance-sheet flexibility to absorb input-cost shocks.

For 2H, the key catalyst is whether AI capex can translate into broad earnings breadth or remains trapped in a few hyperscalers and chip suppliers. If capex slows, leadership can unwind quickly because the market has already rewarded the “pick-and-shovel” cohort; if capex stays hot, the trade still works but upside becomes more selective and valuation-sensitive. The contrarian point is that the market may be underpricing energy as a convex hedge and overpricing the permanence of AI leadership after such a strong quarter.

Key Decisions for Investors

• 1-3 month pair trade: long XLE / short QQQ into strength as a geopolitical and inflation hedge; thesis breaks if Brent falls back and tech breadth improves materially.
• Tactical entry: buy SMH on pullbacks rather than chasing the index; preferred exposure is semis over software because capex is still the cleanest monetization path for AI demand over the next 2 quarters.
• Relative-value hedge: long XLU or utility/power infrastructure proxies against an overweight in high-duration tech if rates back up on crude-driven inflation; this is a cleaner expression than outright index de-risking.
• If the next earnings season shows fewer than expected upward revisions from mega-cap AI spenders, trim QQQ exposure and rotate into value/energy; the thesis is falsified if breadth expands and guidance re-accelerates outside of tech.