Global week ahead: Is 'Sell in May' just a myth?

The article argues that the 'sell in May and go away' adage may not be reliable this year, citing strong April performance from the STOXX 600, DAX, FTSE MIB, S&P 500 and Nasdaq, plus Deutsche Bank's finding that the strategy underperformed buy-and-hold in 25 of 39 years for the Stoxx 600. It also highlights a dense week of European and U.S. earnings, while central banks remain cautious amid elevated inflation and geopolitical risks. Overall tone is mixed: supportive of staying invested, but tempered by policy and macro uncertainty.

Analysis

The key signal is not that seasonality has disappeared, but that it is being swamped by a more powerful flow regime: macro uncertainty is forcing investors to buy optionality rather than de-risk mechanically. When breadth stays resilient into a traditionally soft window, the usual summer underperformance tends to come from factor rotation, not outright index drawdown; that favors active stock selection over blanket equity reduction. The setup is especially relevant for Europe, where the earnings calendar can create sharp dispersion in banks, defensives, and cyclicals over the next 2-3 weeks.

The biggest second-order effect is on positioning. If consensus is leaning on the old seasonal playbook, any modestly positive earnings or de-escalation headline can trigger a short-covering rally in the most crowded defensive hedges, while negative surprises in rate-sensitive financials or consumer cyclicals should be punished harder because there is less valuation support. That makes the market more two-tailed than the headline sentiment suggests: low volatility can coexist with large single-name moves around results.

The contrarian miss is that the real risk is not “stocks in May” but the path of policy and geopolitics into June. A re-acceleration in inflation from supply shocks would quickly reprice duration-heavy growth multiples and narrow the leadership set to cash-rich, pricing-power names. Conversely, if geopolitical risk fades, the market may keep grinding higher even if macro data softens, because sidelined capital is still underweight risk assets after a long period of central-bank caution.

Key Decisions for Investors

• Stay net long but rotate from index beta into event-driven single names over the next 10 trading days; favor names with idiosyncratic catalysts and avoid broad de-risking until after the earnings cluster clears.
• Go long JPM / short European bank basket into the earnings window as a relative-value expression on stronger U.S. earnings quality and better capital return visibility; target a 3-5% spread over 2-6 weeks, stop if European guidance surprises positively across the group.
• Buy short-dated call spreads on DB as a tactical volatility play around the seasonal debate and European earnings dispersion; structure for a 1.5-2.5x payoff if macro headlines trigger a squeeze, with limited premium at risk.
• Pair long defensive pricing-power names against rate-sensitive cyclicals for the next 1-2 months; if inflation rhetoric stays hawkish, the spread should widen as multiples compress in the more leveraged parts of the market.
• Use any post-earnings dip in high-quality cash generators to add risk rather than chasing a market-wide May selloff; the setup argues for buying selective weakness, not selling all exposure.