Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Papa John's (PZZA) upgraded to Buy from Hold at Stifel with analyst Chris O'Cull saying new CEO Rob Lynch's turnaround experience and marketing expertise improves the company's prospects of delivering positive same-restaurant-sales gains over the coming quarters. 2. Targa Resources (TRGP) upgraded to Strong Buy from Outperform at Raymond James with analyst J R Weston saying the recent selloff in the shares is overdone and makes Targa "inexpensive." 3. Livongo Health (LVGO) upgraded to Overweight from Equal Weight at Morgan Stanley with analyst Ricky Goldwasser saying after the recent selloff, Livongo shares are trading at a discount to peers. 4. Sea Limited (SE) upgraded to Buy from Outperform at CLSA with analyst Marcus Liu saying the 12% pullback in the shares post the company's Q2 results is overdone. 5. Pfizer (PFE) upgraded to Hold from Sell at DZ Bank. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage,
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