Leveraged etfs tracking samsung and sk hynix have experienced significant losses, with some reports indicating declines of over 30% in their first month and others stating losses as high as 43%. Despite this, the underlying stocks have seen gains, and there has been a notable amount of investment in these etfs, with one report citing $15.4 billion drawn to them. The cause of the etfs' poor performance is being attributed to various factors, including mechanical selling and the impact of leveraged etfs on the broader market.