"Actually, it's a correction that we've been waiting for, for a long time", Trump said regarding the stock market.
He has frequently criticised the USA central bank for gradually raising interest rates, and on Wednesday reiterated his position: "I really disagree with what the Fed is doing". "It's so tight. I think the Fed has gone insane", Trump told reporters shortly after markets closed, as he arrived in Erie, Pennsylvania for a rally.
After a long stretch of relative calm, the stock market has suffered sharp losses over the last week as bond yields surged.
"I think we don't have to go as fast", the president said. "But I really disagree with what the Fed is doing".
The Dow Jones dropped by more than 800 points on Wednesday in one of the worst days for the stock market since February, and President Donald Trump had an explanation ready when asked by reporters. By convention presidents rarely comment on central bank policy because the Fed is meant to be independent of politics.
After the central bank announced its third increase of the year in September - a quarter-point boost that raised the benchmark federal funds rate to a target range of 2 per cent to 2.25 per cent - Trump said he was "not happy" about it.
In fact it is his policies that are behind the changes: tax cuts and spending policies are expected to juice the economy, adding to the Fed's justification to raise interest rates, while trade conflicts raise costs for companies, which could hit the bottom line in quarterly earnings - something analysts said helped prompt Wednesday's sell-off.
Trump said Tuesday that the economy is enjoying "record-setting" numbers and "I don't want to slow it down even a little bit, especially when we don't have the problem of inflation".
The White House said Wednesday that the "fundamentals and future" of the USA economy are "incredibly strong" despite the big losses in the stock market.
Trump was briefed on the market turmoil earlier in the day, a White House official said. He has repeatedly criticized the central bank for raising interest rates this year, decisions aimed at preventing the economy from overheating.
Trump's comments echo his previous criticisms of recent months, which broke more than two decades of White House tradition of avoiding comments on monetary policy out of respect for the independence of the USA central bank.
During an event earlier Wednesday amid the sell-off, Trump and his top economic adviser, Larry Kudlow, said they believed the American economy was robust.