Charter Communications shares fell sharply in trading Thursday as the company warned of further erosion in its internet business, a core revenue driver for the cable giant.

The negative outlook on its broadband segment triggered a swift sell-off, overshadowing recent market optimism surrounding the operator's strategic positioning.

The decline marks a sharp reversal from earlier trading sessions, where Charter's stock had jumped on reports of a potential strategic partnership with SpaceX.

That development had briefly positioned the cable operator as a beneficiary of new connectivity opportunities, but the fresh warning on organic internet subscriber trends has quickly dampened investor sentiment.

The erosion in the internet business highlights the ongoing structural challenges facing traditional cable operators amid intensifying competition from fiber and fixed wireless alternatives.

Investors are now reassessing the durability of Charter's cash flows, particularly as the company navigates a landscape where legacy broadband growth is increasingly difficult to sustain.