Tesla shares have been on a roller-coaster ride lately, and one Wall Street bull has decided to step off, saying there are many reasons to be cautious right now. The electric-vehicle maker was cut to neutral from outperform by Baird Equity Research analysts Ben Kallo and Davis Sunderland on Monday.

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: Redburn Atlantic upgraded Charles Schwab (SCHW) to Neutral from Sell with a price target of $82,