Apple CEO Tim Cook tried to reassure investors via an email to Mad Money's Jim Cramer

Credit: Kena Betancur/AFP/Getty

Stock markets around the world have been plummeting in the last few days, and on Monday things took a turn for the worse when the Dow Jones at one point fell 1,000 points in under an hour.

Leave it to GOP front-runner Donald Trump to put his own positive spin on the slump that has investors quaking in their suits. The billionaire businessman and presidential candidate took to Twitter on Monday to claim that he is the cure for what’s ailing the market.

The Dow Jones Industrial Average, a key benchmark of U.S. major stocks, dropped 1,089 points on Monday morning – the largest-ever single-day plunge, the Wall Street Journal reports. By late afternoon, the Dow had regained much of its early morning losses but was still down some 340 points. The massive sell-off was the result of investor jitters over signs of weakness in the Chinese economy, according to the WSJ.

After a tumultuous day, the Dow industrials closed down almost 600 points, or 3.6 percent, the WSJ reports.

Apple CEO Tim Cook, meanwhile, tried to reassure investors by taking the unusual step of emailing Jim Cramer, host of CNBC’s Mad Money.

Even the White House weighed in on the Dow’s drop during a press conference Monday afternoon. White House Press Secretary Josh Earnest cited the “strength” of the U.S. economy but called on Congress to do more to stimulate growth.

“There’s no doubt that Congress failing to act is going to have negative consequences for the U.S. economy,” he said.

And the Twitterverse is turning to gallows humor to cope with the stock market nosedive. Here’s a round-up of some of the best jokes.