Seems it's not over yet, those bitcoins keep moving, bitcoin amount in those wallets increases, decreases and divides into other addresses.
some addresses still hold a huge amount of money such as;
- 13DDaTNyfhhixDcMggrL2QucBHbmv731Kv = BTC3,276
- 1MkNCrojT4iThVUXuLmXd5v6Ed85zjEBvN = BTC3,277
- 1G4fjcAVtZCfU1yZQk673mbrVXjXgkEVcT = BTC13,913
it could be someone transfer bitcoin to other persons, to exchanges, or to his other wallets, could be anything.
while people are attracted to addresses that contain large amounts of bitcoins, other adresses which contain small amount of bitcoins probably the real transaction to pay something or to cash out fiat currency.
you are right. it could be just to make some news and rise the price. it could literally be anyone.