President Joe Biden cracked a joke at Donald Trump s expense on Tuesday, mocking the former presidents financial struggles as the value of his media company continues to plunge .

If Trumps stock in Truth Social his company drops any lower, he might do better under my tax plan than his, Biden said in Pennsylvania , causing the audience to erupt with laughter:

Trump Media & Technology Group Corp., which went public last month, once hit nearly $80 a share, briefly putting Trump on the Bloomberg Billionaire Index of the worlds richest 500 people.

Since then, however, shares have tanked, closing at $22.84 on Tuesday. Because Trump owns about 60% of the companys stock, his net worth has plunged as well and hes already lost his spot on the billionaire index.

The shares have been on a steep decline since the company revealed in an SEC filing two weeks ago that it earned just $4.1 million in revenue last year while losing more than $58 million. The filing also contains ominous words from an auditor, who said there is a substantial doubt that the company can continue as a going concern.

Biden cracked another joke at Trumps expense, breaking out a line hes used at other recent events that also refers to the former presidents financial struggles.

Just the other day, a defeated-looking guy came up to me and asked if I could help. He was drowning in debt, Biden said. I said, Im sorry, Donald, but I cant help you.

Trump has been hit with nearly half a billion dollars in fines, fees, interest and other penalties as a result of his recent legal defeats.

Hes currently appealing those decisions.