I'm certain that it's because you're getting around $1m a day, except on Tuesdays/Wednesdays.
The statistics info is 24-48 game hours out of date.
So on Thursday, your CV is $101 million. When the day changes to Friday, the stats page now display the situation at 00:00 Thursday, i.e a value of $101 million. Your airline info page is up to date, it includes the $1 million you made when the day flicked from thursday to Friday, and shows $102 million. Day flicks to Saturday, stats now show $102, info page now shows $103.
When you collect the data, check the stats at 0100 Friday vs your airline info CV at 0100 Thursday. I predict they'll be identical.