Hedge-fund billionaire Ray Dalio said it would be “terrible” if former Wall Street exec Gary Cohn left his White House adviser position, and would be “bad” for the markets.

“Gary Cohn is a very capable man … And he’s open minded,” Dalio, said at an investor conference Tuesday, adding that a Cohn exit might make it difficult for the Trump administration to attract “quality” staffers in the future.

Cohn, who heads up the National Economic Council, has long been thought to be a moderating influence in the White House.

“If he was to leave it would be terrible” and “bad for the market,” said Dalio, whose Connecticut-based hedge fund Bridgewater Associates manages $150 billion.

Last week, Cohn’s former boss, Goldman Sachs CEO Lloyd Blankein, quipped that Cohn is not “perfect, but he’s the best I know.”

“He’s not an academic. I don’t know that he reads a lot of policy papers, let alone write them,” the banking bigwig added.

Cohn has reportedly fallen out of favor with Trump in recent weeks after the former Goldman Sachs exec criticized the president’s response to a white supremacist rally in Charlottesville, Va. that left one counter-protester dead.

The adviser has apparently fallen so far out of favor that he is reportedly no longer in the running to be the next chair of the Federal Reserve.

Earlier in the day, Treasury Secretary Steve Mnuchin refused to comment on Cohn, saying that he was respecting the “confidentiality” of the process.

However, just moments before he praised the current Fed chair, Janet Yellen, as “obviously quite talented.”