Shares of Chinese shopping website Alibaba fell as much as 3% on Monday.
The prolonged absence from the public view of its founder Jack Ma has raised eyebrows.
According to Markets Insider, Ma has not been seen in public in more than two months.
When he unexpectedly failed to show up, he was abruptly replaced as a judge on an African entrepreneurship TV show late last year.
His companies Alibaba and Ant Group face increased regulatory pressure from the Chinese government.
The crackdown coincides with Ma's remarks at a conference that Chinese financial regulators were an 'old people's club,' unable to keep up with technology.