The markets are tanking on Thursday, with the Dow down 500 points earlier in the session amid concerns about rising interest rates and ongoing troubles at Action Alerts PLUS holding Facebook  (FB) - Get Report  . And that was before President Trump slapped China with $60 billion in tariffs.

Here are three top takes from the columnists of Real Moneyand Real Money Pro, our premium site for active investors:

Jim Cramer: No Place to Go and Fewer Places to Hide

Jim Cramer writes that there are a "diminishing group of stocks to buy [and a] diminishing group of countries to turn to. ... Remember, one of the most important props to this rally is that the growth isn't just in America, it is worldwide. Now on top of that comes the tariffs that can only slow world trade even more."

Watch: Jim Cramer and Ken Fischer at the Financial Times Conference: FT Future of News

Tip-Off Time for Real Money's 'Sweet 16' Stock Selections

Our columnists select 16 great stocks and trades in honor of March Madness. Here are the  final of our four-part series on their picks. If you missed any of the previous three parts, click  here, here or  here.

3 Ways to Play the Fed's Rate Hike

Real Money columnist James "Rev Shark" DePorre writes that he sees three ways to play rising Federal Reserve interest rates.