Longest current tenure in Championship

Manager Days
Phil Parkinson (Wrexham) 1950
John Mousinho (Portsmouth) 1382
Nathan Jones (Charlton Athletic) 1002
Chris Davies (Birmingham City) 879
Alex Neil (Millwall) 672
Mark Robins (Stoke City) 670
Steven Schumacher (Bolton Wanderers) 641
John Eustace (Derby County) 627
Brian Barry-Murphy (Cardiff City) 504
Julien Stéphan (Queens Park Rangers) 495
Chris Wilder (Sheffield United) 413
Nuno Espírito Santo (West Ham United) 401
Tonda Eckert (Southampton) 365
Philippe Clement (Norwich City) 349
Vítor Matos (Swansea City) 343
Kim Hellberg (Middlesbrough) 340
James Morrison (West Bromwich Albion) 251
Michael Skubala (Bristol City) 157
Chris Cohen (Lincoln City) 157
Tom Shaw (Lincoln City) 157
Tony Mowbray (Blackburn Rovers) 150
Alessio Dionisi (Watford) 140
César Peixoto (Wolverhampton Wanderers) 140
Graham Alexander (Preston North End) 35
Fabio Celestini (Burnley) 5