Spurred on by good company balance sheets, the Dax exceeded the 16,000 mark for the first time on Friday.
The German standard value index recently rose to a high of 16,003.79 points.
It was not until the end of March that the Dax exceeded the 15,000 point mark for the first time, and on January 7th it passed the 14,000 point hurdle.
Since the beginning of the year, the stock market barometer has gained more than 16 percent.
In the past few weeks there have been positive economic signals from numerous sectors and there have been increasing signs of a global economic recovery.
Quarterly balance sheets of many companies have mostly shown increasing sales and profits, the number of unemployed in industrialized countries is falling again.
There was also a tailwind from the American inflation data published on Wednesday.
However, there are still supply bottlenecks for raw materials, a lack of supplies for computer chips and, last but not least, the spread of the delta variant of the corona virus.
Central bank support
The upward trend on the stock exchanges is supported by the still very low level of interest rates and extensive bond purchases by the central banks.
Although inflation rates have risen significantly recently in Europe and the United States, the central banks do not want to deviate from their cheap money rate for the time being.
Investor worries about an even stronger rise in US inflation had not been confirmed this week.
Although US inflation remained high in July at 5.4 percent year-on-year, it did not accelerate.
In Germany, the annual inflation rate in July was 3.8 percent.
A persistently high level of inflation in America could, however, intensify speculation that the Federal Reserve would exit its extremely loose monetary policy. This can have a detrimental effect on the stock market because other asset classes then become more attractive again.