I re-explained my theory lots before but let me try & recap
WHY i am not 100% sure for one thing..
But if i have to guess i'd say there is a lot of traders who NEED to dump BTC to pay bills etc
Such as giant mining farms who have big loans..
They are going to want to dump for the max possible money of course.
So years ago there was always a stampede of selling going on right at the end of the month
which was cause the price to crash down some..
I swear to god i have looked every single month since 2013 and never NOT seen this happen !
NOW ?
I think a year or so ago the dumpers noticed that too many people are all doing it too..
and they all bit by bit started to dump a little earlier then a little earlier the next month.
This caused the same behavior but the timing of it moved back earlier on the calendar monthly.
So the dumping starts happening mid-month now leading up until i'd say a good 5 days after the 1st of the month. (when Price recovers)
When enough bigger dumpers all start dumping it triggers the momentum of the price change.
Once some start doing it more join in..
There also seems to be a long time correlation between the timing of the monthly dumping
and the monthly dropping of Altcoin prices.. i think users (many of them) migrate back & forth between markets.
My theories anyway people
I hope that made sense..
i also think i could come up with more reasons for the dumping but i prob mentioned it on previous pages.