These companies may be a little boring, but when you're talking about more serious amounts of money, excitement isn't the goal.

Warren Buffett is a kingmaker in a lot of ways. If one of his funds at Berkshire Hathaway (BRK.A) takes a stake in a company, that company automatically gets an air of legitimacy. Even well-established brands like Apple can get a reputational bump from a Berkshire investment.

Warren Buffett remains one of the world’s most prominent investors, renowned for his long-term buy-and-hold strategies and extensive portfolio of public and private holdings. With interest rates poised to decline,