Just like the real stock market, I have no idea what i'm doing
I love the design choice of having the line in the middle of the screen so it's the main focus and everything around it, making it nicely ergonomic. The ad was amazing too I loved the VA and the editing, looks like it could be put on steam!
I would say that the only thing which would improve the experience is some tense background music, and maybe a info box for what stuff does would help out.