UPDATE 3-Buffett's Berkshire buys Suncor, Dish as stock bet grows
* Berkshire adds to Wells Fargo, GM; slashes Kraft, Mondelez
* Some investments kept confidential
* Suncor shares rise after Berkshire reveals stake
By Jonathan Stempel and Tanya Agrawal
Aug 15 (Reuters) - Berkshire Hathaway Inc reported new stakes in Suncor Energy Inc and Dish Network Corp as the company run by Warren Buffett added billions of dollars of stock investments.
The changes were disclosed in a U.S. Securities and Exchange Commission filing made public on Thursday, which detailed $89 billion of Berkshire equity investments, mostly listed on U.S. exchanges, as of June 30.
U.S. regulators require large investors to disclose their stock holdings every quarter, and the disclosures can offer a window into their strategies for buying and selling stocks.
Berkshire took a 17.8 million-share stake in Calgary-based Suncor, which is Canada's biggest oil and gas producer and has a large presence in the Alberta oil sands. That stake was valued at $524 million at the end of the second quarter.
It also reported a small, 547,312-share stake in Dish, the satellite TV company run by billionaire Charlie Ergen, valued at $23.3 million on June 30. Continued...