Stocks making the biggest moves after hours: Tesla, Edwards Lifesciences and more

Elon Musk speaks on stage during the Westworld Featured Session during SXSW at Austin Convention Center on March 10, 2018 in Austin, Texas.
FilmMagic | HBO | Getty Images
Elon Musk speaks on stage during the Westworld Featured Session during SXSW at Austin Convention Center on March 10, 2018 in Austin, Texas.

Check out the companies making headlines after the bell:

Tesla shares rose 1 percent in after-hours trading after investment firm Macquarie gave the automaker an 'outperform' rating and a price target of $430. Tesla shares closed at $250.56 on Monday.

Edwards Lifesciences stock rose 1 percent in the extended session after announcing the start of an 1,000-patient clinical trial to study its transcatheter valve technology. The device is intended for patients at high risk of open-heart surgery.

Affimed shares plunged more than 23 percent in after-hours trading following news that the company is suspending the clinical study of its AFM11 cancer drug after one patient died during the phase 1 study. Two other patients suffered from "life-threatening events," the company said in a statement. All three patients were taking the highest dosage of AFM11 during the study.