Non-executive Chairman of AIM-listed broker Cenkos Gerry Aherne purchased 7,700 shares in the firm, equivalent to 0.057% of the company's issued share capital, for a total consideration of £1.79m. Aherne's total interest in the firm now amounts to 36,200 shares. On June 23rd the outfit reported to shareholders that trading in the first half of 2014 had been stronger than previously expected.The stock price recently surpassed its 2009 highs.Top Director BuysEnteq Upstream (NTQ) Director name: Mr Raymond GarciaAmount purchased: 76,000 @ 34.00p Value: £25,840Cenkos Securities (CNKS) Director name: Mr Gerald (Gerry) AherneAmount purchased: 7,700 @ 232.00p Value: £17,864Top Director SellsBankers Petroleum Ltd.(CDI) (BNK) Director name: Mr John Brian ZaozirnyAmount sold: 50,000 @ 374.38p Value: £187,190Synairgen (SNG) Director name: Mr Phillip David Monk Amount sold: 465,144 @ 50.00p Value: £232,572Synairgen (SNG) Director name: Mr John C WardAmount sold: 450,000 @ 50.00p Value: £225,000Synairgen (SNG) Director name: Mr Richard J MarsdenAmount sold: 420,000 @ 50.00p Value: £210,000AB