Does a hacker newsish platform exist for the finance world?
The best resource is financial twitter (fintwit). The news breaks there, the discussion happens there, and loads of meme-ing also takes place (which is always a nice to-have in a serious place). The only drawback is that most of them lean exactly the way I do. So I can bear the place, but I miss out on a bunch of opposing opinions and it's always a challenge finding someone on the opposite side of the fence.