Looking at my mom's Vanguard account together. Her (trad.) IRA settlement fund is VMFXX. Also in her trad. IRA is VMRXX. (I assume VMRXX is there from before and is now Admiral.)
Her VMFXX settlement fund holds a little cash. Her VMRXX is holding even less. In trying to decide whether to remove one or the other, I saw that VMRXX has a v. slightly higher yield AND a v. slightly lower expense ratio.
Should she remove VMFXX? Can't think of a reason to have both? (but I'm no investing guru).