Stifel Nicolaus Upgrades Mack Cali Realty To Buy By: Benzinga via Benzinga June 19, 2015 at 10:09 AM EDT Analysts at Stifel Nicolaus upgraded Mack Cali Realty Corp (NYSE: CLI) from Hold to Buy. Mack Cali Realty shares have dropped 12.60 ... Read More >> Related Stocks: Mack-Cali Realty Corp