Chloe Aiello reports:
Shares of Under Armour dropped 3.8 percent, before paring losses, after the active-wear company informed users of its online fitness and nutrition website their data had been compromised.
Under Armour announced on Thursday that the breach affected an estimated 150 million users of its food and nutrition application, MyFitnessPal.
The investigation indicates that affected information may include usernames, email addresses, and hashed passwords.
Read more on CNBC.