The E Diminished Arpeggio contains the following notes:
E – G – Bb
It is essentially an E minor chord, with a flat 5.
Here’s how to play the E diminished arpeggio in the open position.
E Diminished Arpeggio CAGED Positions
Here are the 5 CAGED positions for the E diminished arpeggio on the guitar (notes and tabs).