Waste management service provider Stericycle Inc. (SRCL) earned 55 cents in the third quarter, beating the Zacks Consensus Estimate by 2 cents. Earnings were up about 24% year-over-year, while it improved 9% sequentially on higher revenues and margins.  Revenues showed an increase of 7.5% year over year to $46.5 million helped by recent acquisitions, which added $19.3 million in the quarter. Stericycle completed six acquisitions during the first nine months of this year, which included the recently acquired Healthcare Waste Solutions’ operations in Minnesota and Wisconsin, besides Omni Medical Waste in Grand Rapids, Michigan.  Operating costs decreased to 52.7% of total sales in the quarter from 55.6% in the same period of the previous year following which gross profit expanded to $140.9 million from $123.0 million in the same quarter last year. As a percent of revenue, gross profit improved to 47.3% from 44.4% in the ...