Every fingering that fits a hand
020102
open
020132
moderate
054404
moderate
024130
moderate
050474
moderate
What is true of it
E9 is E, G♯, B, D and F♯ — 1, 3, 5, b7 and 9 counted from E.
On an instrument that cannot reach all 5, the 5 and 1 go first, in that order.
The easiest of the 5 fingerings below is 020102: 3 fingers, held at the 1st fret.
1 of them use open strings, which is what makes a shape quiet to change to.
Where its notes are on the neck
The brass dots are E, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
E9/G♯
454400
E9/B
x20102
E9/D
xx0102
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.