Coin fractions at exchanges. How do they do it?
Exchanges are currently trying to figure a way around the problem of NEO being indivisible. The answer they have might not be the best one, but it’s the best we have: You’ll be allowed to trade fractions of NEO as long as you keep them inside your exchange wallet. If you transfer them to your NEO wallet, those fractions will remain on the exchange and won’t be moved to your private wallet.
For example, you are not technically allowed to own 5.32 NEO. You either have 5 NEO or 6. But exchanges will let you exchange BTC for 5.32 NEO without issue. If you keep those 5.32 NEO in your exchange wallet, you should have no problem exchanging them for another cryptocurrency. However, if you transfer the 5.32 NEO you own to your actual NEO wallet, you will end up with 5 NEO, and the 0.32 NEO will stay on the exchange.