Electrocomponents is the best performer today after it said that full year profits will be better than expected. The world's largest distributor of electronics products reported a 26% increase in sales to £563.3m in the six months to September 2010. Underlying sales growth, which strips out currency fluctuations and extra or fewer trading days, was 24%. Profit before tax more than doubled to £50.5m. KBC Peel Hunt says that it might upgrade its 2010-11 profit forecast of £89.2m by around 20%. Shares in medical retinal imaging company Optos have fallen back after it announced that it was acquiring Opto Global Holdings for $14.75m. Adelaide-based Opto Global sells a range of optometry and ophthalmology products through a global distribution network. Optos could use this network for its own products as well as help Opto Global to sell in the US and EU. FTSE TechMARK - RisersElectrocomponents (ECM) 262.70p +5.97%Spectris (SXS) 1,173.00p +4.55%Rolls-Royce Group (RR.) 607.50p +4.02%Renovo Group (RNVO) 37.75p +2.03%Corin Group (CRG) 50.50p +2.02%Dialight (DIA) 435.00p +0.81%Anite (AIE) 54.75p +0.46%XP Power Ltd. (DI) (XPP) 1,000.00p +0.35%Wolfson Microelectronics (WLF) 231.25p +0.11%FTSE TechMARK - FallersAntisoma (ASM) 6.10p -6.44%Optos (OPTS) 97.00p -4.90%Sepura (SEPU) 41.00p -4.65%Promethean World (PRW) 79.00p -4.24%Sinclair Pharma (SPH) 29.00p -3.33%RM (RM.) 143.25p -3.21%Psion (PON) 93.00p -2.62%AEA Technology Group (AAT) 5.25p -2.42%Filtronic (FTC) 36.50p -2.01%Oxford Instruments (OXIG) 502.00p -1.95%