Dear Liz: My VantageScores as reported by TransUnion were in the 780 to 790 range until around February, when they all dropped 40 points for no discernible reason. My FICO 8 and 9 credit scores remained unchanged around 760 and still continue to increase. What would cause that?
Answer: VantageScores tend to react more than FICO scores when you apply for new credit, but 40 points is a pretty big drop. The other usual culprit when good scores fall is higher credit utilization, or using more of your available credit, but typically your FICO scores would have dropped as well.
Most credit monitoring services will offer you some kind of explanation for why your scores changed, so that would be the first place to look for clues. You also should check your credit reports, which are now available weekly from AnnualCreditReport.com.