First build a usable product before going for a pitch. Have at least the most lightweight basic version ready and have few users try it. Try also to get some validation from traders.
Then you can apply for startup accelerators or try for angel investments. A few VCs and programs you can apply are: Sequoia surge, Accel atoms, YC. Apart from this reach out to consultants from McKinsey, BCG etc with alignment in fintech and build connections, they'll invest as angel investments if they liked your idea and team. Remembering you ability to move fast, actually build stuff and having a great team is what matters right now not the last version of your vision or what you think your product is.