wondering if the near-decade-old bull market in stocks may finally be ending.

Analysts have suggested that stocks are also hurting from fears over the slowdown in China's economy and its escalating trade war with the United States.

Mnuchin declined to speculate on why investors might be becoming more anxious about the clash with Beijing.

"Nothing has changed on the trade side in the last 48 hours," he said.

Wednesday's sell-off follows a report this week by the International Monetary Fund that said global growth was plateauing. The fund downgraded its forecast for next year, citing rising interest rates and escalating trade tensions.

Trump hasn't been shy about expressing his unhappiness with the Fed's interest-rate policies. On the campaign trail, he proclaimed himself a "low interest guy."

Traditionally, presidents have avoided publicly commenting on FedEddy Cue has shared some of the latest stats about iTunes during an interview that he gave with Jimmy Lovine during the Code Conference. Cue said that Apple has sold 35 billion songs on iTunes as of last week. That is a huge number of tracks and a massive increase since Apple announced 25 billion songs had been sold as of February of last year.

The assumption is that the 35 billion number includes songs purchased and downloaded. Another interesting stat that Cue gave up was that iTunes has about 800 million customers in total. Apple also enjoys 40 million iTunes Radio listeners in the US and Australia.

Lovine also gave up some stats on Beats Music saying that service has around 250,000 subscribers. Beats Music has also racked up