Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Zynga (ZNGA) upgraded to Overweight from Neutral at Piper Jaffray with analyst Michael Olson saying the company's focus on live services and cost containment improves its risk profile. He raised his price target for the shares to $4 from $3. 2. Symantec (SYMC) upgraded to Overweight from Equal Weight at Barclays with analyst Saket Kalia citing the company's stronger competitive position in Enterprise security as well as revenue synergies from the LifeLock acquisition. The analyst recommends buying the shares ahead of next week's analyst day and raised his price target for the name to $38 from $34. 3. Simon Property (SPG) upgraded to Buy from Neutral at Mizuho. 4. AutoZone (AZO) upgraded to Buy from Neutral at Goldman Sachs with analyst Matthew Fassler citing the "significant" selloff in shares following the third quarter miss. He lowered his price target on AutoZone to $715 from $825. 5. AT&T (T) upgraded to Neutral from Sell at MoffettNathanson. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.