(ShareCast News) - London's top-flight index was in the black on Monday as investors welcomed a long-awaited bailout agreement between Greece and its creditors, with the blue chip index up 0.87% to 6,731.30 by the close.International Consolidated Airlines Group was the standout gainer after Swiss bank UBS upped its rating on the stock to 'buy' from 'neutral' and raised the price target to 700p from 580p. It said that following a 20% fall from the high of 617p hit in April, the stock now presents a good entry point. It also pointed to the company's exposure to recovering UK, US and European markets and said most of the heavy lifting at Iberia is done, with further benefits to come.Barclays was also on the front foot following a press report suggesting that it may acquire another bank as part of plans to ring-fence its retail operations, while setting up its investment bank as a standalone unit. According to the Financial Times, the bank needs to study that option because it has only one banking license in the UK, although it might also opt to apply for an additional one.Also given a shot in the arm by a positive broker report, Shire was among the biggest gainers after a note from Goldman Sachs suggested there was around 30% potential upside in the share price. "We believe that key investor interest will revolve around commentary on the uptake of Vyvanse for BED (Binge Eating Disorder), and the ongoing launches of the recently acquired NPS products (Gattex and Natpara)."ARM Holdings, which design chips for Apple's smartphone, fell into the red after JPMorgan Cazenove downgraded the stock to 'underweight' from 'neutral' and cut the price target to 900p from 950p, pointing to a slowdown in end markets."With key semi end markets such as smartphones, tablets and PCs (where ARM is exposed to multiple peripherals) slowing and consensus not reflecting the slowdown we downgrade," said JPM.RisersInternational Consolidated Airlines Group SA (CDI) (IAG) 544.50p +2.54%Morrison (Wm) Supermarkets (MRW) 177.00p +2.43%Barclays (BARC) 274.55p +2.42%Admiral Group (ADM) 1,465.00p +2.23%Shire Plc (SHP) 5,510.00p +2.04%Carnival (CCL) 3,458.00p +2.04%Kingfisher (KGF) 359.30p +1.96%Direct Line Insurance Group (DLG) 346.00p +1.88%Schroders (SDR) 3,159.00p +1.77%Weir Group (WEIR) 1,624.00p +1.75%FallersCoca-Cola HBC AG (CDI) (CCH) 1,340.00p -0.96%British American Tobacco (BATS) 3,603.50p -0.63%Imperial Tobacco Group (IMT) 3,240.00p -0.61%ARM Holdings (ARM) 1,009.00p -0.59%Royal Mail (RMG) 511.00p -0.58%Fresnillo (FRES) 669.00p -0.45%Royal Dutch Shell 'B' (RDSB) 1,840.50p -0.43%United Utilities Group (UU.) 886.00p -0.34%Sports Direct International (SPD) 727.50p -0.34%Randgold Resources Ltd. (RRS) 4,140.00p -0.29%