Still don't know how you lost $100k on a $50k investment. Did you forget the size of your investment in your initial comment or what happened?

Regardless, even if you were an investor, and I sincerely doubt that you were, it sounds like you're just an incredibly shitty trader who sold at the bottom. The price of NIM has been on a tear this year and it's been a tremendously profitable opportunity for those who bought in when you were selling.