A non-executive director in the alcoholic beverages group Diageo bought some shares showing confidence in the company following a much improved performance in its second quarter.Alan Stewart purchased 1,500 new shares at an individual price of 1,970p, spending a total of £29,550 in the transaction.Stewart, who was appointed to the board in May last year, holds now 1,500 shares in Diageo.The company released last Thursday its second quarter results where it saw stronger net sales, volumes and margins after a bad start to its financial year.Earnings per share were down 14.2% to 53.7p but free cash flow of £699m was more than double that in the first half last year.Chief executive Ivan Menezes said at the time: "We have already taken action to improve the performance of those brands and markets that have not performed as well as we would expect."This contributed to our stronger second quarter performance and I expect to maintain this momentum through the year."Top Director BuysBlinkx (BLNX) Director name: Mr Mark William OpzoomerAmount purchased: 225,000 @ 27.70p Value: £62,325Diageo (DGE) Director name: Mr Alan StewartAmount purchased: 1,500 @ 1,970.00p Value: £29,550Braemar Shipping Services (BMS) Director name: Mr Jürgen Breuer Amount purchased: 5,000 @ 465.00p Value: £23,250AFH Financial Group (AFHP) Director name: Mr Mark Chambers Amount purchased: 9,952 @ 150.20p Value: £14,948Top Director SellsAFH Financial Group (AFHP) Director name: Mr Mark Chambers Amount sold: 10,000 @ 150.00p Value: £15,000