In pre-market deals, Express Scripts Holding Co (NASDAQ:ESRX) saw shares zoom up over 17% to US$85.99 after it emerged that health insurer Cigna Corp plans to buy the company in a cash-and-stock deal worth US$52bn, excluding debt.
The companies say the deal will expand their health care offerings and help them control costs.
Cigna Corp shares shed 4.76% in pre-market to stand at US$185 each.
Another corp HQ exits STL...
Cigna buying St. Louis County-based Express Scripts for $67 billion, https://t.co/AliKVEosh7
— Tugboat Or Ballhog (@Tugboat_Ballhog) 8 March 2018
Elsewhere, Navistar International Corp (NYSE:NAV), the truck maker, saw shares lose 0.11% to US$37 each as it raised its full-year revenue and truck delivery forecasts amid strong market demand.
Also, in pre-market, Kroger Co (NYSE:KR) was in focus, after the grocery store operator's full-year guidance fell short of expectations.
Identical-store sales including fuel were up 2.7% during the fourth quarter to fall short of consensus for a 4.8% rise