Yes. Larry (Swedroe) Portfolio targets something like 30% Small Cap Value (he actually includes some Emerging Markets), 70% safe. SCV is a bit like a 1.2x total stock market, so 30% weighting is more like 36/64 stock/bonds.
Assuming SVXY to be a 5x then 6% SVXY, 94% bonds, rebalanced once yearly, is a reasonable conservative portfolio that might produce similar reward to a Larry Portfolio, but with a bit more interim volatility along the way.
See this and this as a guide to the potential (modest relatively consistent rewards).
At current yields for 'cash' I'm more inclined to a 5 year treasury/cash deposit bond ladder, 95% allocation has around 19% of total portfolio value maturing each year that is available to be rolled into another 5 year bond, plus/minus whatever SVXY might have made/lost over the year.
Holding off SVXY for the time being to let volatility calm down (don't think it can be currently traded anyway).
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