Japan's stocks dropped, snapping a three-day rally, on concern overseas earnings will shrink after Canon Inc. said profit declined on the stronger yen and slowing sales in the U.S. and Europe. The Nikkei 225 Stock Average declined 268.55, or 2 percent, to close at 13,334.76 in Tokyo, halting its longest winning streak since June 2. The broader Topix index fell 34.29, or 2.6 percent, to 1,298.28, the deepest dive since March 17.