As I understand the mechanics of my brokerage accounts if you have a margin authorized or option authorized account, any shares you own can be lent out for shorting. It is more than likely that my AG stock has been lent out and so is part of the force pushing against my long view.
I have read that ALL Robinhood accounts have in the fine print the agreement that their positions can be lent out for shorting. Apparently if your stock is lent out you no longer technically own it and so if the brokerage went down you would only have a monetary claim not a property claim.
I hope I am wrong about this, but you might want to check out the mechanics of your own accounts.
aurum