I'll trust you on that (i didn't do the math!Your numbers also show an overpayment of 0.16% and work out to approximately 16 days of interest on the TIPS interest at VFMXX's current 7-day SEC yield of 3.63%.
I think you are thinking they somehow calculated that the interest was somehow getting interest since the 1st of the month? It is surely possible, but regardless, looks to be a bookkeeping error.
As an aside, Vanguard as of 1/1/26, has made some big changes on the advisors and institutional sites, and there are some small changes on the personal/investors site as well.
They are making good on their migration to their new platform, and this could be a migration/data cleansing error. Pretty odd for sure.
Statistics: Posted by retiringwhen — Sat Jan 17, 2026 10:31 am — Replies 5 — Views 305