Fund manager Schroders leads the FTSE 100 higher after saying it is seeing strong demand for its European corporate bond product, prompting Morgan Stanley to upgrade the stock.Rexam is the heaviest faller. The packaging giant's well -flagged right issue has been launched with the firm looking to raise £351m at a big discount to the current share price. The interim dividend has also been cut.Shares at BG Group fall back after profits at the oil and gas explorer took a big knock in the second quarter, down almost a third from last year when oil prices were twice as high.Data search technology giant Autonomy is lower even though it has signed up another major global bank as a customer.BHP Billiton, the world's biggest miner, slips after saying it has agreed pricing terms with a number of iron ore customers for the 2009 contract year, with prices down by about a third on last year.FTSE 100 - RisersSchroders NV (SDRC) 824.00p +5.10%Eurasian Natural Resources (ENRC) 840.50p +4.74%Aviva (AV.) 347.50p +4.67%Royal Bank of Scotland Group (RBS) 43.73p +4.13%RSA Insurance Group (RSA) 127.90p +3.65%Invensys (ISYS) 254.75p +3.24%Standard Chartered (STAN) 1,401.00p +3.24%Sage Group (SGE) 197.90p +3.23%FTSE 100 - FallersRexam (REX) 254.25p -7.96%Intertek Group (ITRK) 1,046.00p -3.42%Fresnillo (FRES) 619.00p -2.37%Autonomy Corporation (AU.) 1,194.00p -1.73%Petrofac Ltd (PFC) 765.00p -1.16%BG Group (BG.) 1,071.00p -1.02%BHP Billiton (BLT) 1,525.00p -0.91%Carnival (CCL) 1,691.00p -0.88%