I did not see any bad news on the market, but the price dumped, i think this is because whales did it and they been take profit. And they will buy back at lower price. Situation of Crypto market now is very different with afew last year , which the price is natural and did not controled by whales. To avoid big loss, now we should always use stop loss in all open potition and never forget it.
I also don't see any bad news, so this might be the work of some whales who sell their bitcoin for the purposes which is beyond our knowledge. I think this is only temporary and prices will return to normal soon.