Berkshire Hathaway shrinks Goldman, Walmart stakes

OMAHA, Neb. - Investor Warren Buffett's company sold some of its Goldman Sachs (GS) and Walmart (WMT) shares during the third quarter, and made several smaller changes to its stock portfolio.

Berkshire Hathaway Inc. (BRK.A) filed a report on its U.S. stocks Monday with the Securities and Exchange Commission.

Buffett said on CNBC the main reason he reduced Berkshire's Walmart and Goldman stakes was to generate cash for his $32 billion acquisition of Precision Castparts that's expected to close next year.

Berkshire sold 13 percent of its 12.6 million Goldman shares and unloaded 7 percent of its 60.4 million Walmart shares.

Many investors like to copy Buffett's moves because of his remarkably successful record, so these quarterly filings are watched closely.