Yeah, but he bought at the bottom. Credit where credit is due. The biggest rallies come during bear markets.
He entered into the YINN position on Monday. Might have added "at the bottom", but overnight risk is real on these, who knows from day to day what happens in an inefficient market like in China. My understanding of triple etfs is they are not designed for holding; I'm not sure at what point these various etfs get rebalanced and how material the "churning" aspect is on each one.
It's more a curiosity to me to see how efficiently these triple etfs capture the underlying movement.
I did the same trade and am up nicely, but I got out yesterday. It is up again today.

Trading China through ETFs is like trading with a 1 day delayed feed.