https://www.vice.com/en_us/article/jgxg3b/someone-mysteriously-sent-almost-dollar1-billion-in-bitcoin

For all of the grief Bitcoin gets, here's something entertaining: Someone transferred bitcoins worth close to $1 billion USD on Tuesday morning, a move that was public for everyone to see while the identities of the sender and receiver remain unknown.

Big money moves hiding in plain sight tend to be events of some interest among Bitcoiners. Decrypt noted that the sending wallet was recognized as the largest Bitcoin wallet not known to be associated with a business such as an exchange. This means that it could belong to a wealthy private individual, or it could really belong to an exchange, investor, or other business that is simply currently unknown. There's no obligation to publicize which Bitcoin addresses one controls, and if nobody else puts two and two together, one's activities may remain shrouded in pseudonymity.