Other notable investors investing in Bitcoin include Cameron and Tyler Winklevoss (Harvard graduates have sued Mark Zuckerberg for suggesting that Facebook is based on their ideas). The twins bought a total of $ 11 million in Bitcoins by 2013, equal to about 1% of all bitcoins in circulation at the time. When the value of Bitcoin reached over $ 11,000 in early December, the twins were declared the first Bitcoin billionaire. They have suggested the SEC create a bitcoin investment fund, however, the SEC rejected the idea.
Another investor and entrepreneur, Erik Finman, invested $ 1,000 in Bitcoin at the age of 14 and has now become a millionaire.
For all we know these are the people who actually admitted and came to the public and made their announcement to have a lot of bitcoin, so they are millionaires, but there could be others who may have millions of btc, a hidden treasure, who don't want the public to know they even exist, and to be honest they have good reasons for that and that is to avoid hacks attention and most of all, taxation for their revenue from the governments.
Yes, I have read a lot about these twin brothers. However, I also know that there are other billionaires and millionaires. What is cool that very young guys earn a lot on Bitcoins: