Credit Suisse First Boston cable analyst Lara Warner restated her "neutral" rating on Insight Communications Co. with a 12-month price target of $15, after the MSO reported fourth-quarter results slightly below her estimates. In a research report, Warner said Insight's cash-flow growth was 14.2 percent, below her estimate of 15.3 percent. Revenue growth of 11.3 percent in the period fell below her target of 13 percent. But lower expenses helped drive margins above Warner's estimates — 45.6 percent, compared with her 45.3 percent, she added. Insight added 20,000 high-speed data customers, 18,000 digital customers and 8,000 telephony customers.