Catch up on today's top analyst upgrades with this list compiled by The Fly: 1. Philip Morris (PM) upgraded to Buy from Neutral at UBS with analyst Robert Rampton saying the company's valuation hinges on its heated tobacco proposition, iQOS. 2. Boise Cascade (BCC) upgraded to Buy from Neutral at DA Davidson with analyst Steven Chercover saying that with the "irrational exuberance" having been shaken out of the stock, now is an "attractive entry point." 3. AptarGroup (ATR) upgraded to Outperform from Neutral at Baird. 4. W. R. Berkley (WRB) upgraded to Outperform from Neutral at Credit Suisse, while Cincinnati Financial (CINF) was upgraded to Neutral from Underperform. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.