Industrial transportation is the best performing sector, led by FTSE 250 groups Forth Ports and BBA Aviation.Forth Ports is higher after agreeing to let its major shareholder Arcus Capital go through its books ahead of a possible £16.30 bid that would value the Scotland-based port group at just shy of £750m.Also wanted is aviation services provider BBA Aviation after UBS upgraded the group to a 'buy', from 'neutral', saying that "with the shares having fallen due to the share placing we view this as a buying opportunity".Pharmaceuticals and biotechnology stocks are off the mark with shares in drug delivery technology developer SkyePharma losing 17%.The group announced that AstraZeneca has discontinued production of PULMICORT due to "complex manufacturing issues". SkyePharma developed the formulation for the product and 5% of total group revenues (in the first half of 2010 and the whole of 2009) were earned from royalties on Astra's sales.Top performing sectors so far todayAlternative Energy 2,772.87 +4.13%Industrial Transportation 2,583.64 +3.22%Personal Goods 20,211.87 +2.93%Technology Hardware & Equipment 801.47 +1.89%Chemicals 6,980.86 +1.07%Bottom performing sectors so far todayElectricity 7,500.77 -0.42%Household Goods & Home Construction 6,167.74 -0.36%Health Care Equipment & Services 3,991.89 -0.27%Tobacco 28,463.87 -0.24%Food & Drug Retailers 4,720.78 -0.19%