The benefits from a Deutsche upgrade are marginal for Coventry Health Care (CVH +0.5%) today, as the firm takes the shares from a Sell to a Hold following the Aetna (AET +0.9%) merger announcement last week. The firm notes its prior Sell rating had been based on the view that CVH's commercial business was likely to face ongoing margin pressures due to its insufficient scale, but the merger should create a stronger competitor than a stand-alone CVH.