UBS upgrades Chart Industries to buy from neutral UBS said in its upgrade of Chart that the gas and liquid company is seeing improved execution. "Upgrade to Buy as execution improves and leverage drops." JPMorgan upgrades Endava to overweight from neutral JPMorgan said the risk/reward is more attractive for the software company. "We upgrade Endava from Neutral to Overweight as the stock has been severely punished following the recent guidance cut, and the risk/reward is now much more attractive…" Morgan Stanley initiates Inspire Medical Systems as overweight Morgan Stanley said the sleep apnea company is well-positioned. "With a solid track record of execution, multiple catalysts on the horizon, and an emerging profitability profile, we think INSP is well-placed to exceed Street estimates over the mid-term." Bank of America initiates Avis Budget as buy Bank of America said it sees an attractive entry point for the car rental company. "We initiate coverage on CAR at Buy with a $170 PO, implying 55%+ upside.