According to the ETF Finder at ETF Channel, ZUMZ makes up 1.09% of the SPDR S&P Retail ETF (XRT) which is up by about 2.1% on the day Thursday.
In afternoon trading Thursday, ZUMZ was up about 6% on the day.
Costco reported a 3% year-over-year jump in comparable store sales.
Costco and Zumiez were able to benefit from their strong June comps, while Walgreens Buckle and L Brands went the other way.
U.S. stock futures are pointing to a higher opening for Wall Street on Thursday and European stocks post tentative gains ahead of a meeting of the European Central Bank.