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.

The company, which operates 424 stores in 46 states, also said it remains "comfortable" with analysts' average earnings estimates of 24 cents a share for the current quarter, up from 20 cents in the year-ago period.

Shares of Too Inc. were up 7 cents at $23.82 in early trade on the New York Stock Exchange on Thursday.