Community Trust ScoreVerified
The Swiss Market Index (SMI) rose 4.6% in October 2026, outperforming the Euro Stoxx 50, which declined 3.2%, creating a performance gap of almost 8 percentage points. This divergence marks the widest spread between the two benchmarks since March 2020.
Defensive Rotation Drives Swiss Gains
Market data indicates that European investors shifted toward profitable companies with strong balance sheets that are less exposed to rising borrowing costs. This defensive posture favored Swiss blue chips, which are perceived as less volatile than their euro-area counterparts. The shift was attributed to three primary forces: rising borrowing costs, growing doubts about the sustainability of the artificial intelligence trade, and political instability in France and Spain.
The performance of the SMI was heavily concentrated in its largest constituents. Roche, Novartis, and Nestlé together account for almost half of the index’s total value. In October, Roche shares climbed 12%, Novartis added 6.7%, and Nestlé gained 10%. These three companies produced the entire net gain for the SMI during the month, meaning that buying the index was effectively a bet on these specific healthcare and consumer staples stocks.
AI Sector Selloff and Bond Spreads
The rally in Swiss defensive stocks coincided with a significant correction in global technology equities. Reports indicate that 20 of the top AI and chip stocks shed over $1 trillion in market value between October 12 and 15. Investors expressed concern that higher borrowing costs could weigh on future AI spending, prompting a retreat from crowded technology positions.
Global corporate bond spreads widened to their highest levels since May 2025, reflecting increased risk aversion in the bond market. Damian Burkhardt of EFG Asset Management linked the Swiss gains to this reversal in sentiment. He noted that investors are actively seeking alternatives to crowded AI trades, observing that healthcare had previously served as a funding sector for the AI trade, a dynamic that is now reversing.
Fund Manager Survey Data
Bank of America’s global fund manager survey, which polled managers from October 2 to 8, showed that the tech trade was highly crowded prior to the selloff. Managers held their largest allocation to technology stocks since August 2020 at the time of the survey. In Bank of America’s separate European survey, Switzerland ranked joint second for net allocation at 16%, behind Spain, which held a net allocation of 28%.
The recent rally has increased the valuation of Swiss shares, raising questions about the sustainability of the current price levels. The market continues to monitor the interplay between global interest rates, AI sector earnings, and political developments in Europe as key drivers for future asset allocation decisions.
Frequently Asked Questions
What was the performance gap between the SMI and Euro Stoxx 50 in October 2026?
The Swiss Market Index rose 4.6% while the Euro Stoxx 50 fell 3.2%, resulting in a performance gap of almost 8 percentage points, the widest since March 2020.
Which companies drove the Swiss Market Index gains in October?
Roche, Novartis, and Nestlé drove the gains, with Roche climbing 12%, Novartis adding 6.7%, and Nestlé gaining 10%. Together, these three companies make up almost half of the SMI’s value.
