"We've traded publicly [for] 100 years out there," she told "Mad Money" host Jim Cramer on Tuesday. "And the trick to being a company in tech, which is a viciously competitive environment, that's absolutely right, is you've got to keep reinventing. And what IBM is for is for someone who values high value as a company."
At the time of his sale, the Berkshire Hathaway chairman and CEO cited "pretty tough competition" and a changing playing field.
"I don't value IBM the same way that I did 6 years ago when I started buying ... I've revalued it somewhat downward," Buffett told CNBC.
Watch the full segment here: