Morgan Stanley upgrades Tullow from 610p to 690p
"Morgan Stanley has also kept overweight on Burren Energy, raising the price target to 950p from 835p, Cairn, improving the target to GBP21.60 from GBP17.50 and Royal Dutch Shell, lifting the target to GBP24 from GBP23. The broker has overweight on Soco, increasing the target to GBP27.50 from GBP23.30 and Tullow, raising the target to 690p from 610p.