(ShareCast News) - Investec´s finance chief and risk director Glynn Burger sold a big slice of shares in the specialist bank and asset manager which he helps to run.Burger sold 221,503 shares at an individual price of 504p in Johannesburg on 1 December, for a total consideration of £1,116,375.11, the company said in a statement.On 17 November, Investec reported first half operating profits of £281m, which were 0.7% ahead of those for the same period of the previous year.Analysts at Numis described the company´s figures as "good" but pointed out how at 11.1 times its estimates for 2017 earnings the company´s shares were being valued at a "significant premium".In the same research note they downgraded their recommendation on the stock from 'add' to 'hold'.Top Director BuysValue And Income Trust (VIN)Director name: Oakeshott,Matthew AAmount purchased: 85,000 @ 248.00pValue: £210,800.00Horizon Discovery Group (HZD)Director name: Galbraith,SusanAmount purchased: 40,000 @ 119.75pValue: £47,900.00Ecofin Global Utilities And Infrastructure Trust (EGL)Director name: Negre,MartinAmount purchased: 43,511 @ 108.25pValue: £47,100.66Horizon Discovery Group (HZD)Director name: Gilham,Ian DavidAmount purchased: 25,000 @ 117.90pValue: £29,475.00Horizon Discovery Group (HZD)Director name: Disley ,Darrin MatthewAmount purchased: 25,000 @ 117.00pValue: £29,250.00The Gym Group (GYM)Director name: Darwin,RichardAmount purchased: 12,500 @ 168.81pValue: £21,101.25The Gym Group (GYM)Director name: Hughes,PennyAmount purchased: 12,500 @ 162.00pValue: £20,250.00Polymetal International (POLY)Director name: Groenberg,MarinaAmount purchased: 2,500 @ 765.30pValue: £19,132.50Horizon Discovery Group (HZD)Director name: Searle,SusanAmount purchased: 10,000 @ 118.00pValue: £11,800.00Jpmorgan Smaller Companies Inv Trust (JMI)Director name: Robson,Andrew StephenAmount purchased: 1,200 @ 768.70pValue: £9,224.46Shires Income (SHRS)Director name: Robson,AndrewAmount purchased: 4,000 @ 216.65pValue: £8,666.00Rathbone Brothers (RAT)Director name: Stockton,PaulAmount purchased: 100 @ 1,820.00pValue: £1,820.00Rathbone Brothers (RAT)Director name: Howell ,Philip Amount purchased: 100 @ 1,820.00pValue: £1,820.00Jpmorgan American Inv Trust (JAM)Director name: Bragg,Simon Amount purchased: 359 @ 352.17pValue: £1,264.30Stagecoach Group (SGC)Director name: Paterson,Ross Amount purchased: 73 @ 206.21pValue: £150.53Stagecoach Group (SGC)Director name: Griffiths,Martin AndrewAmount purchased: 73 @ 206.21pValue: £150.53Premier Oil (PMO)Director name: Rose ,RichardAmount purchased: 227 @ 66.00pValue: £149.82Premier Oil (PMO)Director name: Durrant ,Tony Amount purchased: 189 @ 66.00pValue: £124.74Premier Oil (PMO)Director name: Allan,RobinAmount purchased: 189 @ 66.00pValue: £124.74Rps Group (RPS)Director name: Hearne,AlanAmount purchased: 66 @ 188.50pValue: £124.41Rps Group (RPS)Director name: Young,GaryAmount purchased: 66 @ 188.50pValue: £124.41Top Director SellsInvestec (INVP)Director name: Burger,GlynnAmount sold: 221,503 @ 504.00pValue: £1,116,375.11Share Plc (SHRE)Director name: Oldham,Gavin David RedversAmount sold: 661,826 @ 27.50pValue: £182,002.15Prudential (PRU)Director name: Nicandrou,NicolaosAmount sold: 3,268 @ 1,555.76pValue: £50,842.33Prudential (PRU)Director name: Foley,John W.Amount sold: 998 @ 1,555.76pValue: £15,526.51