The response came a day after Buffett — while campaigning alongside Hillary Clinton in his home state of Nebraska — challenged Trump to release his tax returns and slammed his business record.
In particular, Buffett singled out the 1995 listing of Trump's hotels business in Atlantic City.
"In the next 10 years, the company loses money every year, every single year, and he takes out $44 million in compensation during that period," Buffett said Monday. "In 1995, when he offered this company, if a monkey had thrown a dart, at the stock page, the monkey on average would've made 150 percent. But the people that believed in him, who listened to his siren song, ended up losing well over 90 cents on the dollar. They got back less than a dime."
Trump also attempted to defend his record Tuesday, saying he "did very well in Atlantic City."
"I had great timing, I got out and I made a lot of money in Atlantic City over the years," Trump told the channel. "I took, you know, a lot of money out of Atlantic City, which is what I'm supposed to do. I'm a business person."
The knock from Buffett does not mark the first time the GOP nominee's business record in Atlantic City has come under attack. Previously, Democratic rival Hillary Clinton took aim at Trump's record in the city at a campaign rally there last month.
—Reuters contributed to this report.