There is no one rule how to play a large range arpeggio passages. The way to change your arm positions would depend on the music piece. Let’s learn different movements. Start learning the notes by playing them slow in the same closed position. Then use 1-3-5 finger positions and change the arm position by each octave. Next versions suggest moving your arm slightly while using the fingers at the same time. The last variant is another version for a change of the arm position for each octave.