I bought some T bills today on the secondary market. I don't understand the yield. Here's the specs:
The bill listed the YTM/YTW as 2.375% which I thought was OK. I bought them immediately, this was around 3:30 ET and when it was done I ran the details through the calculator Audreyh1 posted a link and I got a yield of 2.30%.
I'm pretty sure I entered the correct info into the calculator.
24 T bills
the cost was $23,950.12
they mature in 33 days
This is the calculator.
https://goodcalculators.com/treasury-bills-calculator/
Is it possible that the Vanguard screen that lists the secondary market treasuries refreshes every 15 minutes or longer? Maybe the yield changed and I did not know when I bought them?
I know there is a bid and ask spread, the yield I am quoting was the ask, the bid was about 10 bp higher. I thought I was getting 2.375%.