So I opened my first position last week, a small min risk one to try and see what I don't understand, and it's took a while to improve but things look ok now: https://i.stack.imgur.com/2mF6A.jpg
For reference the position is a bear call spread composed of
1 MSFT call 139 Price $13.85
-1 MSFT call 136 Price $13.75
Could someone just clarify what exactly is going on. I've been seeing a net P&L loss when MSFT has been priced between 136-139 which confuses me. I thought when I opened the position I was aiming for the price to go below 139 because that's what the call indicates. MSFT right now is at 137 so I'm assuming that my mistake was that I need to be below 136 to make a profit?
Should I be concerned about shares being assigned? And how will expiration affect me? I know options are worthless when they expire so should I be thinking about selling soon?
Thanks a lot!
P.S. Had a look at the calculator here, kind of confused why the exp isn't all 0? https://i.stack.imgur.com/QskUG.png