Moody's Investors Service said it has changed the ratings outlook for Stallion Oilfield Services Ltd to negative from stable.
Moody's (nyse: MCO - news - people ) senior analyst Pete Speer said, 'Moody's changed the rating outlook to negative in response to Stallion's aggressive financial strategy of using debt to bridge the funding of its third quarter acquisitions and defer the equity offering until later in the year.'