According to ChainCatcher, Lookonchain reported that an address bought 80 BTC four months ago for approximately $5.2 million, at a price of around $65,000 per BTC, and at one point had a profit of $1.38 million. A week ago, the address purchased a Ledger device from reseller CryptoBillis and transferred all 80 BTC to it. The entire balance has now been lost.