Ajit Jain, Warren's Buffett's insurance chief and top executive, sold more than half of his stake in Berkshire Hathaway , a new regulatory filing showed. The 73-year-old vice chairman of insurance operations dumped 200 shares of Berkshire Class A shares on Monday at an average price of $695,418 per share for roughly $139 million. That left him holding just 61 shares, while family trusts established by himself and his spouse for the benefit of his descendants hold 55 shares and his nonprofit corporation, the Jain Foundation, owns 50 shares. Monday's sale represented 55% of his total stake in Berkshire. "This appears to be a signal that Ajit views Berkshire as being fully valued," said David Kass, a finance professor at the University of Maryland's Robert H. Smith School of Business.

---

Persons: Ajit Jain, Ajit, David Kass, University of Maryland's Robert H Organizations: Jain Foundation, Berkshire, University of Maryland's, Smith School of Business Locations: Berkshire Hathaway, Berkshire