Protective apparel firm Under Armour has completed its transfer from Nasdaq to the New York Stock Exchange (NYSE).

Under Armour went public last November and was the second-best performing US domestic IPO in 2005, based on price performance.

Its shares have jumped 100% since its first day of trading as a public company.

"We are pleased to welcome Under Armour Inc to our family of listed companies," said NYSE Group CEO John A Thain.

"Under Armour is one of the fastest growing brands in the world and a market leader in performance apparel, just the type of brand that thrives on the NYSE."

Kevin A Plank, Under Armour chairman and CEO, added: "As our brand and our business become more global every day, raising Under Armour's visibility in the global financial markets becomes increasingly more important.

"We are proud of the performance we've delivered to shareholders and view this move as an important milestone in the evolution of our company."