No significant talks are taking place between Charter and Verizon: Sources

No significant talks are taking place between Charter and Verizon, sources told CNBC on Thursday.

Earlier, shares of Charter surged more than 9 percent after a report claimed Verizon is exploring a combination with the company. The stock still ended the day 7 percent lower, while Verizon shares fell 1 percent.

There was speculation earlier that talks could be in the very early days.

Charter said it has no comment on the report. Verizon declined to comment.

Andrew Harrer | Bloomberg | Getty Images

A customer stands at a counter inside a Verizon Wireless retail store in Washington, D.C.

Dow Jones said Thursday, citing people familiar with the matter, that the No. 1 U.S. wireless carrier is exploring a deal with Charter that would unite two giants in search of growth in a rapidly consolidating media and telecom landscape. It is unclear if Charter CEO Tom Rutledge or other top management would be open to a transaction, the report said.

The news comes amid Verizon's pending acquisition of Yahoo in a $4.8 billion deal, which has been met with hurdles after the search engine company announced two huge securities breaches.

Verizon said Tuesday in its fourth-quarter earnings release that it "continues to work with Yahoo to assess the impact of data breaches."

— CNBC's David Faber contributed to this report.