Philipp Dollinger shows how you can loop Alembic files in Cinema 4D with a simple Xpresso set up he created. Looping Alembic files is a simple process for short loops, but what if you wanted the animation to loop longer, or maybe indefinitely?

Philip posts the little XPresso setup so you can download it and use it here: dropbox.com/s/xuglt78tqjl6cn8/alembicloop.c4d?dl=0
Simply copy it into your scene.