Charter Communications (CHTR) - Get Report was up 6.7% in preopen Island trading in active trading after Lehman Brothers raised its rating on the stock to strong buy from buy, saying the company is poised for strong revenue growth.

The No. 4 cable TV company, controlled by

Microsoft

co-founder Paul Allen, posted a first-quarter loss of $1.20 a share Tuesday and raised its estimates for new high-speed Internet customers to a range of 550,000 to 600,000 in 2001.