FRANKFURT—German carmaker Porsche and sportswear maker Puma will join the nation’s premier DAX stock index, as it expands to 40 from 30 companies in the biggest overhaul of its 33-year history, the exchange operator Deutsche Boerse said on Friday.
The expansion, contemplated for years, got a push in reaction to the collapse of German payments company Wirecard, which dramatically fell from grace in 2020, just two years after promotion to the benchmark index.
