HONG KONG — As Chinese authorities intensify their scrutiny of the financial industry, the billionaire chairman at one of the country’s biggest private conglomerates is missing, a local financial news magazine reported on Thursday.

The billionaire, Guo Guangchang, described by the domestic press as “China’s Warren Buffett,” may have been taken away by police, either under arrest or in custody for questioning, the news magazine Caixin reported, citing people familiar with the matter. He is the chairman of the Fosun Group, which owns the Club Med chain of resorts and a stake in the Canadian entertainment company Cirque du Soleil, as well as positions in insurance companies and property holdings.

Mr. Guo’s disappearance is the latest in a series of mysterious circumstances surrounding an anticorruption investigation into the financial industry. Since August, many executives have been arrested or detained by the police, while others have disappeared.

The investigation follows the sharp decline in the Chinese stock market this summer, with stocks in Shanghai plunging by more than 40 percent. Instead of letting markets take their course, the central government in Beijing undertook a major effort to bolster prices.