$NUGT STO Sept 02 $21…

$NUGT STO Sept 02 $21 call for $1.75 earlier this morning. Trying to add $22 and $22.6 for additional premium. I have a long $36 call that I can sell a number of closer priced calls against. I plan to sell a small percentage today, then add various strikes each day until EOD Thursday when I expect to have a full (covered) position.