If they're at bittrex, they are not on your own account. Also, as another downside for keeping them in an exchange, is the exchange will be earning PoS blocks, and not you.
I'm pretty sure that exchange wallets are specifically not POS enabled because of the amount of coins they would earn...
Oh man lets not forget that one coin that was on cryptsy forever ago, I think they finally delisted it. where they were generating stake off the massive amount of coins they had. Its discouraged to stake as an exchange for a couple reasons, 1 when coins stake they are not available for transfer, 2 stake wouldnt be tracked by their systems.
Just an updated richlist parse using robs parser.
These are just addresses with 1000 or more in them
If my coins are still on Bittrex (haven't moved them yet) will it show up as it's own address or be lumped in with exchange addresses...because I don't see my amount number on there...
It really depends on how the exchange keeps track of their coins. Most of the time though it a database related thing. In which case you can trade coins and they wont actually move from the addresses they are tied to until the are withdrawn. It is best to keep coins not actively being traded on local wallets. Especially stakeable coins,
This is for two reasons.
1. The network will be reliant on these PoS transactions when it goes entirely PoS in a couple of days.
2. If you dont have the coins on your local wallet you either arent generating stake that is applied to your balance, or you arent staking at all depending on the exchange your coins are on.
Also to come later on. The maths that shows you how much you would be losing by keeping coins on an exchange.