It is not easy to string a lot of xFFs together because the underlying stock has to continue gaining more than the averages are rising.
There are 7 3x ETFs, so days should be divided by 7. 315/7 = 45 I hope. xCF has been the most popular state. Note how it’s standard deviation is significantly higher than xFF. The close to open numbers are good. Keep in mind that these are natural logs, so .69 would double your money. xCF is close to that but that number should also be divided by 7.
Pretty cool that TQQQ is less volatile the SPXL.