Flash crash of Bitcoin price

At approximately 10:09 ET, the bitcoin jumped to a one-hour high of $11,399, which placed it just below the all-time high of $11,441 it had set at 9:13. Apparently — after observing resistance at $11,500 — a whale had set $11,400 as his or her target exit vector because at 10:11, the candle turned red, and three minutes later, this trader unleashed a massive market sell order.

This sell order caused the bitcoin price careen down to $10,075, representing a decline of $1,324 — or 12 percent of bitcoin’s total value — in just four minutes. For reference, the bitcoin price did not even reach $1,324 until May 1 of this year

Following the flash crash, the bitcoin price quickly rebounded above $10,900, but it was unable to crack the $11,000 mark and quickly fell into decline. At 10:40, the bitcoin price reached a bottom at $10,262, at which point it began to recover. By the time of writing, the bitcoin price was once again trading near $9,600 on Poloniex.

Part of the reason for bitcoin’s resilience — even as some traders have clearly begun to take profits from this week’s parabolic movement — could be the news that Nasdaq, the world’s second-largest stock exchange, intends to list bitcoin futures contracts by the second quarter of 2018
(i did sell my bitcoin too... :-D)
Ref : https://www.cryptocoinsnews.com/bitcoin-price-flash-crashes-10075-market-goes-berserk/