Not that the Fratton faithful need informing, but they'll see Pompey happily ensconced at the summit.
Kenny Jackett' s side are looking down on their rivals after defeating Hull City 2-0 in front of the Sky Sports cameras a week ago.
The Blues did face the prospect of not being top on December 25 earlier this week when Doncaster hosted Shrewsbury at the Keepmoat.
A win for Donny would have seen them leapfrog Pompey.
However, ex-Blues boss Steve Cotterill did his old side a favour by engineering Shrewsbury’s 1-0 success.
Pompey are undoubtedly in a strong position, although Kenny Jackett and his troops are well aware there’s still more than half the season remaining.
It was only two seasons ago when the Blues were top of the tree at Christmas but failed to deliver promotion.
But how have the other sides who were in the same position over the past 10 years fared? We've taken a look...
1. 2019 - Wycombe
The Chairboys were the surprise leaders on Christmas Day last year, having collected 43 points from 21 games. Wanders would eventually be promoted via the play-offs after finishing sixth when the table was decided by a points-per-game formula amid the coronavirus pandemic. Coventry instead claimed the crown while Rotherham finished runners-up. Photo: Catherine Ivill
2. 2018 - Pompey
It was two years ago when Kenny Jackett's men sat top of the tree at Christmas with 53 points from 23 games, Yet they'd fail to maintain their fine form in the second half of the season, finishing fourth on 88 points, with Luton clinching the title and Barnsley also going up automatically. The Blues then lost to Sunderland in the play-off semi-finals beofre Charlton won the Wembley final. Photo: Joe Pepler
3. 2017 - Wigan
Paul Cook had left Pompey for the DW Stadium the previous summer - and it was no surprise the Latics were top at Christmas with 51 points from 22 matches. Wigan would go on to be crowned champions, accruing 98 points. Blackburn finished second, while Rotherham defeated Shrewsbury in the play-off final. Photo: Clint Hughes
4. 2016 - Scunthorpe
The Iron were storming their way to the Championship, with 47 points from 22 games. However, they'd finish third with 82 points before being beaten by Millwall in the play-off semi-finals. Sheffield United won the silverware, with Bolton finishing second and Millwall going up via the play-offs. Photo: Mike Hewitt