Sonic Automotive Inc-Class A

Rocket Lab shares declined premarket Monday following a record $190 million hypersonic test contract award and a new plan to potentially sell up to $1 billion in stock. The company's backlog now exceeds $2 billion.

Sonic Healthcare shares rallied close to 10% following robust first-half results, including an 11% profit increase and a higher dividend, while management reaffirmed its annual earnings outlook.