A non-executive director of credit information group Experian has acquired a stake in the group worth 114,720 pounds, it said on Monday. Jan Babiak bought 11,000 shares at 1,042.91p a piece, taking advantage of the fall seen in the share price in the past fortnight. The decline came after the group cautioned on headwinds in Brazil and the US, which it said were affecting immediate prospects.In its annual results released on May 7th, the group said: "In the short term, we face a number of one-off headwinds, most notably a subdued trading environment in Brazil over the World Cup and the revenue impact of the changes we are driving in North American Consumer Services, which together will constrain growth in the first half."However, it also said its organic development prospects are set to brighten as the second half of the year progresses. Top Director BuysExperian (EXPN) Director name: Ms Jan Babiak Amount purchased: 11,000 @ 1,042.91p Value: £114,720Thomas Cook Group (TCG) Director name: Ms Harriet GreenAmount purchased: 32,700 @ 154.17p Value: £50,414Thomas Cook Group (TCG) Director name: Ms Martine VerluytenAmount purchased: 25,000 @ 153.26p Value: £38,315Bodycote (BOY) Director name: Mr David F LandlessAmount purchased: 4,948 @ 702.00p Value: £34,735Redrow (RDW) Director name: MS Barbara RichmondAmount purchased: 8,251 @ 264.00p Value: £21,783Top Director SellsPrudential (PRU) Director name: Mr Mike WellsAmount sold: 300,000 @ 1,397.72p Value: £4,193,160Prudential (PRU) Director name: Mr Tidjane ThiamAmount sold: 380,000 @ 1,398.10p Value: £5,312,780Prudential (PRU) Director name: Mr Barry StoweAmount sold: 216,000 @ 1,395.58p Value: £3,014,453Prudential (PRU) Director name: Mr Nicolaos NicandrouAmount sold: 116,106 @ 1,398.10p Value: £1,623,278Prudential (PRU) Director name: Mr Michael McLintockAmount sold: 72,188 @ 1,398.10p Value: £1,009,260NR