Building-related shares continued to show heavy institutional demand on Tuesday, while investors also crowded into financial and tech stocks. Tool, plumbing and lighting products distributor W.W. Grainger (GWW) burst past upside resistance at 220, rising 5.48 to 223.09. Volume grew 18% above its 50-day moving average, a good sign. The stock passed a 218.33 cup-without-a-handle buy point on Jan. 29, but volume was dull. A week later, it began a