The Winklevoss twins announce they own 1% of the Bitcoin supply

On April 11, 2013, Cameron and Tyler Winklevoss, known as the Winklevoss twins reportedly owned 1% of the circulating bitcoin supply.
 

The twins began amassing large amounts of Bitcoin through their family office, Winklevoss Capital, in 2012. By November 2013, their investment was reported to be as much as 1% of the circulating supply of Bitcoin, according to the Washington Post.

They used $11 million from their $65 million payout from their Facebook lawsuit against Mark Zuckerberg to invest in Bitcoin. At that time, the cryptocurrency was priced around $120. This investment has played a significant role in their journey to becoming Bitcoin billionaires. 

The Winklevoss twins were among the first prominent figures in the largely anonymous Bitcoin world to publicly disclose such a significant stake. Their investment and public support for Bitcoin helped bring more attention to the cryptocurrency and played a role in its journey towards mainstream acceptance.