ICICI Securities Ltd | Retail Equity Research Persistent Systems (PSL) reported weak Q4FY17 earnings on the topline and bottomline front while EBITDA margins surprised on the upside by 40 bps due to lower expenses US$ revenues declined 0.9% QoQ to $109.03 million, below our 1.6% growth and $111.8 million estimate Revenues in rupees declined 2.5% QoQ to | 727.1 crore, below our 0.3% growth and | 747.6 crore estimate...