 Shares of Kelly Services Inc. KELYA, -9.49 tumbled 9.5 in afternoon trading Wednesday, after the staffing services company reported third-quarter profit and revenue that rose less than forecast, and lowered its full-year outlook, amid a historically tight labor market. Net income more than doubled to 34.8 million, or 87 cents a share, from 16.7 million, or 42 cents a share, in the year-ago period. 