I get the feeling that people have interpreted this question in two ways.
I think he was asking how "invested" you are in Bitcoin. ie. How many Bitcoins do you have or have you purchased?
Related to this, there is a common illusion that you can put some kind of money 'into' a thing. But you can't, all you can do is divest yourself of one thing to gain another. The illusion is even stronger when the thing you are purchasing has a face value, but even a "That guy owes me 11 coins because I gave him 10" is not you having 10 coins 'in' him, it's you becoming no longer invested in 10 coins in return for being invested in a promise from a guy for 11 coins.