What were Warren Buffett and his colleagues at
 
 
 Berkshire Hathaway
 
 
 up to with their $350 billion equity portfolio last quarter? Investors will find out very soon.
A regulatory filing expected Tuesday should lift the veil. Investors will be focused on whether Berkshire Hathaway (tickers: BRK/A, BRK/B) added to its stake in
 
 
 Taiwan Semiconductor Manufacturing
 
 
 (
 
 
 TSM
 
 
 ), as well as whether the company continued to pare its longtime interest in
 
 
 U.S. Bancorp
 
 
 (USB).
Source: https://www.barrons.com/articles/warren-buffett-berkshire-stock-moves-13f-2713bb48?siteid=yhoof2&yptr=yahoo