CNBC Pro

Dow Theory giving warning signal. What to sell

Delta Air Lines planes at John F. Kennedy Airport in New York.
Getty Images

The recent underperformance of the Dow Jones transportation average could signal the start of a more meaningful decline, some investors believe.

More In Investing

Cathie Wood says she's standing by her bullish bets on Tesla, Roku and bitcoin
CNBC ProCathie Wood says she's standing by her bullish bets on Tesla, Roku and bitcoin
Jeffrey Gundlach is buying Treasuries after calling bond market most attractive in 10 years
CNBC ProJeffrey Gundlach is buying Treasuries after calling bond market most attractive in 10 years
Apple is a safe haven amid the stock market rout, says tech investor Gene Munster
CNBC ProApple is a safe haven amid the stock market rout, says tech investor Gene Munster