The index fell to minus 18.7 in September, from minus 17.2 in August, which is the lowest level since March 2023.
According to Bloomberg, it is the falling stock prices and threatened mass layoffs at the Danish pharmaceutical giant Novo Nordisk that weigh on households' future prospects.
Jes Asmussen, chief economist at SJF Bank, says that the challenges that Novo Nordisk is facing will likely "leave deep marks on our perception of the economic situation".
Novo Nordisk's shares, which are owned by many Danish small investors, have lost more than half of their value over the past year.
The pharmaceutical company announced earlier in September that it will lay off 9,000 employees, of which more than half in Denmark.
