Under Armour Class A shares experienced a significant pre-market decline of 5.12% on Tuesday, as investors reacted to anticipation surrounding the company's upcoming quarterly earnings report scheduled for release before the market opens.

The athletic apparel company is expected to report its financial results, with Wall Street analysts forecasting earnings of 1 cent per share on revenue of $1.16 billion. However, other earnings preview data indicates the company's fourth-quarter EPS is forecast at a loss of 7 cents, compared with a loss of 16 cents in the prior-year period, with adjusted EPS forecast at a loss of 2 cents.

This pre-market movement suggests investor concern about the upcoming earnings release, with the stock experiencing volatility ahead of the official results announcement. Earnings reports often trigger significant price movements as investors react to whether companies meet, exceed, or fall short of market expectations.