Credit Suisse First Boston retail analyst Kimberly Greenberger on Thursday raised her rating on teen-oriented retailer Too Inc. (NYSE: news) to a "strong buy" from a "buy." Further details were not immediately available. On Wednesday, Too, which targets girls aged 7 to 14 years, said its second-quarter profits surged 53 per cent, far outperforming its rivals, as merchandise profit margins grew and expenses fell.