|Andrei Rado, Esq.|
|One Pennsylvania Plaza, 49th Fl.|
|New York, NY 10119-0165|
|Phone number: 800-320-5081|
Here are Thursday's top research calls, including an upgrade for NetApp and downgrades for BlackHawk Networks, Groupon and Wells Fargo.
Shares of Groupon surged over 20% on Wednesday after crushing quarterly revenue estimates.
There are several other very active stocks, too.