The price of his stock does not really matter to him. He is focused on income generation. The stock price will adjust when the income starts flooding back in.
This is literally a hedge fund...when times are good people will pile in...when times are bad people will walk away.
Think about how many people walked away from Michael Burry's firm when he bet against the housing market before the financial collapse.
Icahn's fund is not going under. He has assets. Its just time to wait for the pay day....like Michael Burry did when investors walked out on him.