Runic inscription:

. . . on : au - mfast

The only word we can perhaps interpret from these fragmentary runes is the name: Holmfast

History

The runestone was already broken in the 17th century. The fragment was found in the same area as U 32. Perhaps both runestones belonged to the same family?

What remained in the 17th century was only the lower left part of the runestone, which was already badly damaged by then.
Now this fragment is also gone.
 

Links

Upplands runinskrifter > page 45
(Only Swedish)

Runor >  Riksantikvarieämbetet
(National Antiquities Board, mostly Swedish)

Google map > Find the location where the fragment was last seen.

ALL RUNESTONES

Ekerö municipality

ADELSÖ >
has 5 known runestones

BIRKA >
has fragments from 9 known runestones

MUNSÖ >
has 3 or 4 known runestones

EKERÖ >
has 11 known runestones

FÄRINGSÖ >
has 27 known runestones

LOVÖ >
has 8 known runestones