Coinspeaker Under Armour (UAA) Stock Down 10% in Pre-market as Its Sales Plunge 23% in Q1Under Armour reported a first-quarter loss of $589.7 million. On a per-share basis, the Baltimore-based company said it had a loss of $1.30. Today in the pre-market, UAA stock is at around $9, it means it has lost 10%.Under Armour (UAA) Stock Down 10% in Pre-market as Its Sales Plunge 23% in Q1