Berkshire Hathaway’s latest mystery-stock investment could be revealed late Thursday. There is a good chance it is an industrial company. And the total size of the holding could be almost $5 billion,

Warren Buffett’s Berkshire Hathaway revealed a position in embattled healthcare giant UnitedHealth Group while showing smaller stakes in longtime holdings Apple and Bank of America, according to a regulatory filing Thursday.

The model noted that Berkshire’s cost basis in the commercial and industrial sector increased during the first half of the year, a signal that aligns with GE, as per the CNBC report.