Is there some significance to these coins besides the amounts? It looks like they're just moving coins from legacy addresses to Segwit addresses and breaking them up into smaller amounts. No sign of exchange wallets or anything.
Possible thing but no one knows actually on whats the reason behind on breaking up into smaller parts with those coins. If that amount of btc is only possessed of a single person then its an amazing thing to know that
there are still people who do accumulate as much as they can.