08:28 AM EDT, 10/23/2024 (MT Newswires) -- Enphase Energy ( ENPH ) shares tumbled more than 15% in recent Wednesday premarket activity, a day after it reported lower Q3 non-GAAP earnings and net revenue from a year earlier.

McDonald's (MCD) stock was downgraded by Baird to neutral from outperform and its price target cut to $290 from $320 on Wednesday, a day after the US Centers for Disease Control and Prevention said an E. coli outbreak in 10 states is linked to the Quarter Pounder burger. Shares were down nearly 7% recently.

Hilton Worldwide Holdings ( HLT ) stock fell almost 4% after it reported lower-than-expected Q3 revenue and issued lower-than-expected Q4 and 2024 adjusted earnings per share outlook.

Alto Neuroscience ( ANRO ) shares plunged 63% in recent premarket activity after it said overnight that a phase 2b study of ALTO-100 in patients with major depressive disorder failed to meet its primary endpoint.

Price: 77.89, Change: -14.34, Percent Change: -15.55