StubHub, Jazz Pharmaceuticals upgraded: Wall Street's top analyst urges

TL;DR

UBS upgrades Jazz Pharmaceuticals stock rating on Ziihera potential The most talked about and market moving research calls around Wall Street are now in one place. Here are today's research calls that investors need to know, as compiled by The Fly. Top 5 Upgrades: - - - - - Top 5 Downgrades: - - - - -.