Berkshire Hathaway is the only name in this batch that earns an A on the valuation factor. A P/E near 12.7x is the lowest among the megacaps here, meaning its insurance float-funded investment portfolio and subsidiary businesses trade at a relative discount.

It pays no dividend, favoring Buffett's signature buyback-and-reinvest capital allocation approach, and analyst coverage is essentially nonexistent (recommendation: none). Rather than relying on a Wall Street price-target consensus, the better approach is reading the quarterly shareholder letter and tracking changes in cash holdings directly.