Now there is a new issue about the diving market.that is fork risk!

you dug out and then bumped an old topic to give a wrong answer!
it is still the same reason for so called "diving" as before. and it is nothing else than FUD. there is no fear of "fork" because fork in this context is the boogeyman that kids are afraid of and they are wetting their beds because of it.
Fud definitely plays an important role, but we can't just put aside that the majority of the blocks are being mined with support for BU. It's still far away, but traders anticipate by closing positions as they want to lower their overall risk exposure.
It doesn't hurt as trader to liquidate some of your positions to have a good amount of fiat ready to be used in case the price happens to tank. Most of the better traders have done that at +$1200 prices at the time they secured profits.