The Chief Executive Officer of internet company blinkx has made a show of faith with the purchase of 250,000 shares following Tuesday's profit warning. Subhransu Mukherjee, who joined the group in 2011, paid 34p a shares for a total spend of £85,000. Shares in the firm plunged on Tuesday after the group told ibnvestors its trading in the first half had been below its expectations, which it said revenues and earnings, particularly the end of the second quarter. A statement from the group attributed the performance to industry-wide issues of efficiency and effectiveness, which, in its case was compounded by the lingering effects of a disparaging blog about the company. "This resulted in a slower-than-expected return of demand, despite earlier signs of normalisation," it said. Top Director BuysGeneral Electric Co (GEC) Director name: Mr John Joseph BrennanAmount purchased: 3,262 @ € 19.61 Value: €63,953General Electric Co (GEC) Director name: Mr James TischAmount purchased: 2,563 @ € 19.61 Value: €50,249General Electric Co (GEC) Director name: Mr James J MulvaAmount purchased: 2,563 @ € 19.61 Value: €50,249General Electric Co (GEC) Director name: Ms Rochelle LazarusAmount purchased: 2,330 @ € 19.61 Value: €45,681Diploma (DPLM) Director name: Mr Bruce ThompsonAmount purchased: 8,950 @ 659.00p Value: £58,980General Electric Co (GEC) Director name: Mr Robert SwieringaAmount purchased: 1,948 @ € 19.61 Value: €38,191General Electric Co (GEC) Director name: Mr James Cash JrAmount purchased: 1,538 @ € 19.61 Value: €30,153General Electric Co (GEC) Director name: Ms Andrea JungAmount purchased: 1,538 @ € 19.61 Value: €30,153General Electric Co (GEC) Director name: Mr Robert LaneAmount purchased: 1,538 @ € 19.61 Value: €30,153General Electric Co (GEC) Director name: Dr Susan HockfieldAmount purchased: 1,398 @ € 19.61 Value: €27,408Top Director SellsSABMiller (SAB) Director name: Mr James WilsonAmount sold: 62,301 @ 3,397.75p Value: £2,116,832Mckay Securities (MCKS) Director name: Mr Steven MewAmount sold: 73,004 @ 221.60p Value: £161,777Mckay Securities (MCKS) Director name: Mr Simon PerkinsAmount sold: 65,573 @ 221.60p Value: £145,310Mckay Securities (MCKS) Director name: Mr Giles SalmonAmount sold: 60,762 @ 221.60p Value: £134,649Diploma (DPLM) Director name: Mr Bruce ThompsonAmount sold: 8,950 @ 659.00p Value: £58,980NR