At first I thought the whales have been selling huge amount of bitcoin. But when I checked the movement of buy and sell the btc volume is low. Compared to the drop from 20k$ to 18k$ you can see the large volume of bitcoin being sold. At this time all I can see is that the sold btc are less than 1 btc per transaction. I also see the potential of bitcoins value rising up sooner.

Well, the coins are on sale, what do we expect? Whales of course.

These whales are playing another tug of war. Whales dumps bitcoin to gain a little dip, and then more whales comes to take the bait and buy more bitcoins.  Whales enjoys their little games causing a ripple in the market which eventually worries the little fishes out there. Worried about the red tide in the market, they began selling their coins, too. 

Let us not be that little fishes. We're going to HODL and buy more dring dips like this.

Oh yes! Why would they throw a million dollar invest? They would never sell their bitcoin!

should we consider  exchange address ?

firstly the +10,963btc in the second from top.. is a majority of exchange wallets
in short 10k btc went INTO exchanges

meaning that those that had funds in their own privkeys. now put their funds into exchanges 'trust' vaults to sell.

secondly for every buyer there is a seller..
so if theres a group of people with a combined 10,000 btc. once they sell it. there will be a new group of people with a combined 10,000

the table does not reveal if its whales.
infact it could be 1 whale depositing 10k btc.. or
100 sharks depositing 100btc.. or
10,000 minnows depositing 1btc

also it doesnt reveal who is or has bought that 10,000 btc.. again it might be 10,000 minnows depositing 1btc  to sell.. but then in a few days one fiat whale BUYING all 10,000 in one gulp. or staggered in smaller bites over many days.. in short it doesnt reveal who, how big or how soon thos funds will turn into filled orders

the table only shows that 10k extra went into known large wallet addresses.