Here are Monday's biggest analyst calls of the day: AT&T, Nvidia, Nio, Match, Wells Fargo & more

Chinese electric vehicle start-up Nio Inc's first employee Tianshu LI, and company's leadership team celebrate at the New York Stock Exchange (NYSE) Opening Bell to commemorate the company's initial public offering (IPO) at the NYSE in New York, September 12, 2018. 
Brendan McDermid | Reuters

Here are Monday's biggest calls on Wall Street: