re: Should I buy more Roku now?

long swing trade.

imo, techincally it is showing a "low volume pullback".. longs were locking in profits (literally at the support).
to me.. that says whatever long term trend is still intact.

IF you can get that price(or better).. i'd just place a 5% trailing stop and let it run...
it it drops 5% you're out...
..if it get close to 160 then make a decision on whether take profits.

for options..it has a high IV.. for a reason.
but with earnings season getting into high gear next week.. i personally probably wont want to do anything but day trade it.
imo, if anyone even flirts making a bigger buy order visible..it may gap.