Will the Stock Rally Last Into 2026? CIOs and Professors Weigh In

Alexandra Janssen, CEO, Ecofin Asset Management:


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It is an illusion to believe anyone can predict with certainty whether the equity rally will continue. The future is inherently uncertain – in life as well as in financial markets.

In times of heightened uncertainty and high valuations, it is tempting to follow the siren song of forecasters. But doing so is dangerous: Investors who rely on predictions often become overly concentrated in the stocks and time periods expected to outperform. This neglects the only approach proven to work consistently: diversification and scenario thinking.

«The alternative to market timing, stock picking and similar predictive approaches is a broadly diversified, continuously invested portfolio.»

The alternative to market timing, stock picking and similar predictive approaches is a broadly diversified, continuously invested portfolio. Empirical evidence shows that market returns are frequently driven by a handful of companies and short time windows. Continuously invested, well-diversified portfolios therefore deliver better long-term results than prediction-based strategies.

What matters is individual customization: Risks and opportunities across scenarios must align with an investor’s personal situation. The time and money saved by avoiding predictions can instead be invested where value is actually created – in defining one’s asset strategy, or in entrepreneurial projects outside financial markets.


Read next: Thomas Della Casa, Head of Asset Management & CIO, Helvetische Bank.