Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Best Buy (BBY) upgraded to Neutral from Underperform at Wedbush with analyst Michael Pachter saying it has consistently defied his expectations and the company appears to have settled on the right formula for long-term growth. 2. Wix.com (WIX) upgraded to Outperform from Sector Perform at RBC Capital with analyst Mark Mahaney citing valuation. 3. RealPage (RP) upgraded to Outperform from Sector Perform at RBC Capital with analyst Matthew Hedberg saying the company recorded one of its better quarters in years and also cites his recent positive takeaways from discussions with its management. 4. Tandem Diabetes (TNDM) upgraded to Outperform from Neutral at Baird with analyst Jeff Johnson saying he believes the recent selloff in the shares is overdone, especially in the context of Street estimates that now appear too low for 2019-2020. 5. Edison International (EIX) upgraded to Buy from Neutral at Mizuho with analyst Paul Fremont citing an analysis of the company's 2017-2018 wildfire/mudslide liabilities, the analyst estimates "more upside opportunity than downside opportunity" from current stock levels. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.

Leerink upgraded Tandem Diabetes to Outperform from Market Perform with a $45 price target.