Market Plumbing Under Review - Flash Crash / Flash Up

This is very interesting, the Senate is now investigating equity flash crash and flash-up, which this guy suggests is eminating from the ETFs and spilling over into the equities markets. He just met Congress to explain his take but he did not mention Nano Flash Trading done by the top 6 Banks: https://finance.yahoo.com/blogs/breakout/etfs-under-fire-senate-probes-m...