T-Mobile shares are backsliding after Chief Executive Mike Sievert hinted that fourth-quarter subscriber figures might underwhelm them. Its stock, which has more than tripled over the past five years,

T-Mobile US Inc. Chief Executive Officer Mike Sievert warned investors to “be cautious” about the telecom company’s fourth-quarter results, which will be “back-end loaded.”

CEO Mike Sievert said his comments during the UBS conference, which sent the stock tumbling Monday, were “misinterpreted.” Shares rose 1% in premarket trading Tuesday. The telecom giant’s stock fell more than 6%

Mike Sievert said the company is expecting some year-end factors to drag on results, which won't be as good as the third quarter.

Shares of T-Mobile (NASDAQ:TMUS) turned defensive Monday after the company’s CEO warned of risks to the business in the second half of the current quarter. “It's been a great quarter so far. The only thing I would caution,