BAT is being driven predominately by news headlines right now as they prepare to launch their Mercury update. The recent sell-off was driven by BAT team announcing that they are only launching a preview on Github (actually works and talks to servers on the blockchain) while the CEO of Brave said it would be launched on 10/6. There are key support levels just below at 53k - 51k SATs and then another one much further down at ~47k SATs. Given launch is expected next week and there is a top tier team behind BAT, I would be accumulating at these levels / if it was to head lower.