Reuters/Shannon Stapleton
- Warren Buffett's Berkshire Hathaway should be part of a "Magnificent Eight," Jim Worden says.
- Berkshire deserves a spot given its diversified business, cash pile, and investing nous, he says.
- The investment chief doesn't expect a recession but sees several challenges for the US economy.
The "Magnificent Seven" should be expanded to include Warren Buffett's Berkshire Hathaway, one investment chief says.