Filtronic has clawed back some of last week's decline triggered by worries about the loss of business with the recently acquired customer Nera Networks. Filtronic is a supplier of point-to-point communications equipment to Nera but its acquirer Ceragon is a competitor. The Filtronic share price is still one-third lower than one week ago. Strong earlier trading pushed up the share price of human tissue supplier Asterand. There have already been many more trades in Asterand shares so far today than in a normal trading day. Printing head technology developer Xaar has been hit by profit-taking following last Thursday's positive trading statement. Financial software firm Misys has also lost some of its gains from late last week when Canaccord Genuity upgraded it from a hold to buy. FTSE TechMARK - Risers Asterand (ATD) 22.00p +25.71%Ark Therapeutics Group (AKT) 5.90p +7.27%Filtronic (FTC) 40.50p +6.58%Parity Group (PTY) 22.75p +4.60%Cable & Wireless Worldwide (CW.) 71.95p +2.93%Computacenter (CCC) 451.10p +2.71%Sepura (SEPU) 49.50p +2.59%ProStrakan Group (PSK) 100.00p +2.04%BAE Systems (BA.) 355.70p +1.74%Oxford Instruments (OXIG) 670.00p +1.52%FTSE TechMARK - Fallers Emblaze Ltd. (BLZ) 47.50p -3.06%Triad Group (TRD) 19.00p -2.56%Xaar (XAR) 240.50p -2.43%Telecity Group (TCY) 433.80p -2.43%Antisoma (ASM) 6.25p -2.34%Misys (MSY) 332.50p -2.12%Spirent Communications (SPT) 134.40p -2.04%Wolfson Microelectronics (WLF) 300.25p -2.04%Vectura Group (VEC) 82.00p -1.80%NCC Group (NCC) 621.00p -1.66%