Communications services companies fell amid mixed earnings in the sector.

Charter Communications rallied after the cable giant said it added 250,000 residential cellphone customers during the second quarter for a total of nearly 2.9 million, the latest indication of cable companies' successful pivot into mobile-phone service.

Airtel Africa said the Qatar Investment Authority will invest $200 million in its Airtel Mobile Commerce subsidiary at a valuation of $2.65 billion.

Write to Rob Curran at rob.curran@dowjones.com

(END) Dow Jones Newswires

07-30-21 1700ET