OMAHA, Neb. (AP) - Warren Buffett's company now owns 8 percent of Seritage, the real estate investment trust Sears created.

OMAHA, Neb. (AP) Warren Buffett's company now owns 8 percent of Seritage, the real estate investment trust Sears created.

Berkshire Hathaway said in a filing with the Securities and Exchange Commission Thursday that it owns 2 million shares of Seritage.

The new stake would have been worth about $70 million at Wednesday's closing price. Seritage shares jumped $5.14, or 14.6 percent, to $40.37 after the investment was disclosed Thursday. That made Berkshire's stake worth nearly $80 million.

The documents Berkshire filed don't state whether Buffett made the decision to invest in Seritage.

But the relatively small size of the investment by Berkshire standards suggests one of the company's other investments made the move.