What makes me kinda curious is that why did he decide to withdraw coins right now instead of bitcoin halving days? If he sold during peak times and bought during the fall when it was floating between 16K, he would truly have tremendous amounts of coins. Transaction from an old address would also attract some attention and create a little hype during that time.
It is really interesting to think of the reason why the owner of that address decided to move the coins right now since if the intention of the owner is to sell those coins then he just need to wait another two years in order to get the possible maximum profit for those coins. But well, we don't know if the person have the emergency and in need of a huge fund to cover the needed amount.
Well, Satoshi still owns a million bitcoins and it has been sleeping there since the beginning so what we can say about that obsession with holding? 
We have to decide until when we are going to hold our crypto assets which varies from one to another depends on their needs and goals, for someone who is very rich and have lot of sources to make revenue then they can wait patiently when one of their asset is bleeding to death, so life is not same for everyone.
We have to decide until when we are going to hold our crypto assets which varies from one to another depends on their needs and goals, for someone who is very rich and have lot of sources to make revenue then they can wait patiently when one of their asset is bleeding to death, so life is not same for everyone.
Well, we do not know if satoshi is even alive of not, but other than satoshi, there are number of wallets (of course we do not know whom wallets), that are holding bitcoin and never sell even at the top of bull market.
These are the two true holders and bitcoin reward the most to those who can hold it for the longest time period.
True many of us think that the coins in the given satoshi wallet address is unmoved because satoshi is not in this world anymore. So it would be a huge surprise if those coin become active all of a sudden.