Shares of Charter Communications (CHTR) slipped in Friday trading after the company reported a quarterly loss that widened from last year. Charter said its first-quarter net loss widened to $81 million, or $0.73 a share, from $37 million, or $0.35 a share, a year ago. The company said its quarterly loss includes $86 million of interest expense related to the Comcast (CMCSA) transactions financing. Charter was set to buy Bright House Networks for $10 billion, but that was dependent upon Comcast's proposed $45 billion buyout of Time Warner (TWC), which fell apart on antitrust concerns. CEO Tom Rutledge said on the company's earnings call that Charter is attempting to renegotiate with Bright House.