Industrial and construction supplies retailer Fastenal (FAST) is slumping after the company reported that net sales growth for the month of May rose 13.1%, down from 22.6% during the same period last year. In late morning trading, Fastenal dropped $3.84, or 8.855, to $39.54. Meanwhile, shares of W.W. Grainger (GWW) and MSC Industrial (MSM), which distribute maintenance and repair products, also fell significantly.
U.S. regulators are in the early stages of an antitrust probe into whether Google Inc, the top player in Web display …