You are right, as of the moment of writing this, there is next to no "business news" on the FP right now.
Anecdotally, I would claim that there is a lot more non-tech content during the week, and mostly tech content on the weekends (see for yourself via the "past" link at the top).
I think it is fair to say, non-tech / business / economics / stocks ( and as well as politics ) etc tends to get more during the week because that is how the news and PR cycle works. i.e Business aren't going to publish their quarterly results during weekends, economics forecast etc get there by mid week ( Monday is never a good to start PR ).
So may be if you only ever go on HN during weekdays, the amount of business entries could be a little higher, but generally speaking I still believe HN aren't anywhere business focus at all. ( If it was I wouldn't have to rant about Supply Chain and Operation management every time the topic comes up )
Anecdotally, I would claim that there is a lot more non-tech content during the week, and mostly tech content on the weekends (see for yourself via the "past" link at the top).