I have a small amount of BTC with Polo. But sadly Polo has not yet integrated with lumens yet. So noone of us who hold BTC in Polo wont be able to claim it.
Does anyone know whether Bittrex or any other exchange has integrated lumens giveaway yet?
Polo is participating in the giveaway, but I'm not sure when they will be disbursing the coins. Bittrex has yet to confirm that they are participating. Your best bet is probably just to wait on Polo.