In this article

Gilead Sciences

said on Monday it ⁠will buy cancer therapy partner Arcellx

for an implied equity ​value of $7.8 ​billion, expanding ​their cell therapy development collaboration that started in 2022.

Shares of Arcellx climbed 77.8% to $113.99 while ⁠Gilead fell ‌about 1% in premarket ⁠trading.