Why not?

Ahahah, @tigertrader! But I think you are absolutely correct with your pic! That's why I'm asking before trying. "If it's too good to be true, it's probably not!" . That's why I'm still asking. I know there are still risks... If I leverage myself that much, I could get a margin call in a more volatile market.. But must adjust my exposure regarding the market conditions..

edgarlemos 

Why not? Ahahah, @tigertrader! But I think you are absolutely correct with your pic! That's why I'm asking before trying. "If it's too good to be true, it's probably not!" . That's why I'm still asking. I know there are still risks... If I leverage myself that much, I could get a margin call in a more volatile market.. But must adjust my exposure regarding the market conditions..

risk -free arbs exist, just not to us mere mortals...

I understand that, but even if I hit the ask, as long it's below 100 (par), that's alright, right? It doesn't seems to be that dificult. These bonds have thousands k$ per price level, so it wouldn't be a problem.. Of course trading with IB makes things a little bit harder because of the markups. But as soon you have enough money, you could trade with an investment bank and have direct access to Bond pools like tradeweb.

Can you explain me how does the maturity works? I mean, on maturity, do I need to do anything or my position will be automatically closed and the par value credited on my account?