Guo Guangchang, 48, dubbed "China's Warren Buffett", has been out of contact since yesterday, respected business magazine Caixin reported on its website.
Police took Guo away at one of Shanghai's airports, Caixin cited social media postings as saying, without making clear whether he was under investigation himself or assisting a probe.
"Many linked his disappearance to an investigation by the authorities," the official Xinhua news agency reported.
It has largely been confined to within the ruling Communist Party - with critics saying it has been used for internal faction-fighting - and Guo would be by far the highest-profile businessman to fall if he is brought down by it.
Chinese authorities have also launched wide-ranging probes into the financial sector following a market rout earlier this year when a debt-fuelled bubble - encouraged by officials - burst.
Guo is China's 17th richest person with a net worth of USD 5.6 billion, according to Bloomberg News.
The Fosun Group is one of the country's biggest private companies and its flagship subsidiary, Fosun International, has net assets of 50 billion yuan (USD 7.8 billion).
Fosun has interests in property, finance, pharmaceuticals, steel and entertainment, and has been aggressively buying assets in Europe and North America.
It bought renowned French holiday company Club Med earlier this year and in April was part of a consortium that acquired Canadian entertainment juggernaut Cirque du Soleil.
It also has a stake in British-based tour operator Thomas Cook. Fosun Group is due to hold its annual meeting on Monday, where Guo usually makes a speech, Chinese news portal Sohu said.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
