Re. October vs November
What happens is that when HBD is persistently less than $1, the stabilizer does HBD->HIVE conversions which lock up a lot of HBD in the 3.5 day timer. Once HBD starts to go above $1, the HBD or HIVE is just sent back. The former happened more in October and the latter happened more in November.
Recently we've seen HBD more below $1 so the balance locked in 3.5 day conversions has been increasing again.
So less conversion in November, but still a high profit for the stabilizer