Under Armour Inc. said Monday it will change the ticker symbol for its Class A shares to "UAA" from "UA." The stock will remain listed on the New York Stock Exchange. The athletic apparel company said the ticker for its Class C shares will change to "UA" from "UA.C." The changes will be effective Dec. 7. The Class C shares don't have voting rights. The Class A shares were by far the more active, with a full-day average of 8.03 million shares traded over the past 30 days, according to FactSet, compared with the Class C share volume of 1.58 million shares. The Class A shares, which surged 1.2% in premarket trade, have tumbled 27% year to date through Friday, while the rival Nike Inc.'s stock has dropped 18% and the Dow Jones Industrial Average has climbed 9.9%.
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