I spent most of the day playing with moomoo trading sytem, trying to understand how things work. As image below shows, I finished in red but in my opinion it was a useful excercise anyway. I was trying to do some light opportunistic trading following ups and downs of the ETF. The biggest obstacle I faced is the opaque structure of moomoo paper traibs fees. At this point I don’t fully understand whether particular transaction is going to be net positive after stock selling fee is applied.