Lonza Group Stock Drops Amid Weaker Swiss Market

Lonza Group stock fell on September 7, 2026, as the Swiss market traded lower. The company's shares were quoted around 560.70 Swiss francs on the SIX Swiss Exchange, down about 1.5 percent from the prior close.

The broader market index, SPI, also declined by 0.65 percent at midday, with investor sentiment in Zurich remaining cautious. This downward trend added pressure to Lonza Group's stock, which has been sensitive to macro news and index moves in recent times.

In the latest half-year results for 2026, Lonza Group reported mid-single-digit revenue growth compared to the same period in 2025. The company's core EBITDA margin also improved by several percentage points year on year, supported by pricing discipline in long-term manufacturing contracts and cost control.

The biologics manufacturing segment continued to drive growth for Lonza Group, contributing a significant share of group revenue. As the company's half-year 2026 results confirmed a margin improvement compared with half-year 2025, it is reasonable to infer that biologics operations played an important role in supporting this trend.