Cameron and Tyler Winklevoss file the first-ever Bitcoin exchange-traded fund (ETF) application with the SEC, proposing the "Winklevoss Bitcoin Trust" to trade on the NASDAQ. The twins, famous for their legal battle with Mark Zuckerberg over Facebook, had reportedly purchased approximately 1% of all bitcoin in circulation. The filing was a landmark moment that signaled Wall Street's first serious attempt to bring Bitcoin to mainstream investors. The SEC would ultimately reject the proposal in March 2017, but the Winklevoss filing opened a door that would take over a decade to walk through.
SEC: Winklevoss Bitcoin Trust S-1 Filing