Space-related funds are seeing a surge of inflows as investors eagerly await the IPO of Elon Musk's SpaceX (SPAX.PVT). In the latest installment of Yahoo Finance's ETF Report, TMX VettaFi head of research Todd Rosenbluth to talk about the ETFs that could draw in the most investors — like the Procure Space ETF (UFO) — as interest in the broader space economy grows. Rosenbluth goes on to weigh in on prediction market ETFs that are set to launch.