Someone is moving a $2 Billion chunk of BTC every single new block...

Been doing some blockchain digging and noticed someone has been moving the same 40k+ BTC chunk every new block for the past 2 days.

The coins now reside here: https://blockstream.info/address/39a7TtMg2i1QfG1JyEb6uQeY3YVQmqEEUe

They are still moving, as soon as the tx is confirmed the chunk is moved to again to new address. They have done this 180 times already since yesterday, I traced the coins all the way back to a transaction where 800+ inputs were consolidated into this massive 40k+ chunk of BTC: https://blockstream.info/tx/fc10b4f216e2407d533422894989be3ad3781ef6eff91cf2385f3d2befc53cd9

Anyone have an idea why someone would be moving this chunk of 40k+ BTC every block?