EOS is not like any other coin. If you aren't hokding at the token swap in JUNE. You wont be part of the snapshot. This snapshot is being used by a lot of projects to give airdrops. As well as anyone who wants to launch a EOS sidechain can also use this snapshot. You will miss out on all the extra equity from these airdrops and snapshots.
But do your thing, I would just recommend dont sleep on it to much after trading opens back up after snapshot. There is going to be some crazy hyps/PR after June.