first day HQU up 5%, HQD down 5%
second day HQU down 20%, HQD up 20%
HQU price 20*(1.05*0.8) = 20*0.84
HQD price 20*(0.95*1.2) = 20*1.14
after 4 times up/down, the sum is greater than 40
HQU price 20*(1.05*0.8) = 20*0.84=9.96
HQD price 20*(0.95*1.2) = 20*1.14=33.78
second day HQU down 20%, HQD up 20%
HQU price 20*(1.05*0.8) = 20*0.84
HQD price 20*(0.95*1.2) = 20*1.14
after 4 times up/down, the sum is greater than 40
HQU price 20*(1.05*0.8) = 20*0.84=9.96
HQD price 20*(0.95*1.2) = 20*1.14=33.78