Several of the nation's retailers came out with May sales results after the close Wednesday, and for the most part, chain stores were reporting gains for their shops open at least a year. Aeropostale ( ARO), a seller of casual and active apparel, was among the few reporting a decrease thus far, saying same-store sales fell 1.5% last month, but was up against a 19.1% gain in May 2002. Total sales for the four weeks ended May 31 rose 29.2% to $34.5 million. Hot Topic ( HOTT), a retailer of apparel and accessories for teens, said same-store sales rose 3.2% in May. Total sales jumped 25% to $31.2 million. At Guess? ( GES), comparable sales rose 10.3%. Total sales reached $29.9 million, up 18.7% from a year ago. Comparable-store sales for the company's full-priced retail stores increased 9%, and same-store sales at the factory outlets grew 13.8%. Consolidated May comp sales at American Eagle Outfitters ( AEOS) rose 0.4%. Overall sales for the four-week period ended May 31 climbed 12.2% to $97.6 million. Meanwhile, Men's Wearhouse ( MW) posted a same-store sales gain of 7.6% at its U.S. stores last month. Net sales for May rose 8.5% to $111.9 million. Many of the nation's retailers are scheduled to report their May results tomorrow, with the numbers starting to come in before the opening bell.