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QDAY uses zero-days-to-expiry options (0DTE) to create its yield, and it uses this covered call strategy on about 25% of the underlying holdings, with 25% leverage. It has a somewhat high MER of 0.85%, and an AUM of $169M.
BIGY uses a higher leverage profile of 33%, and it uses covered calls on 50% of its underlying holdings. It has a better MER of 0.4%, and a decent AUM of $117M. Unlike QDAY, it does not specify that it uses 0DTE.
Both are fairly new ETFs, and they have performed quite well since launching (amid a tech bull market). There are risks if volatility suddenly spikes (either a sharp crash or strong bull run), and capital erosion is to be expected alongside their high yields (25%+ yields). We would be fine with both ETFs, but with their leverage profiles, we think that some caution could be warranted.