ARLINGTON, Va.--(BUSINESS WIRE)--Commercial insurance prices increased in aggregate at a modest pace (1%) during the second quarter of 2015, continuing a trend of ever smaller increases, according to the latest Commercial Lines Insurance Pricing Survey (CLIPS) conducted by global professional services company Towers Watson (NASDAQ: TW). This survey compared prices charged on policies underwritten during the second quarter of 2015 to those charged for the same coverage during the same quarter of