A newly proposed exchange-traded fund would offer exposure to bitcoin, much like other popular ETFs tracking the world’s oldest cryptocurrency. But, there’s a twist: The fund would trade bitcoin-linked assets while Wall Street sleeps. The Nicholas Bitcoin and Treasuries AfterDark ETF aims to purchase bitcoin-linked financial instruments after the U.S. financial markets close, and exit those positions shortly after the U.S. market re-opens each day, according to a December 9 filing to the Securities and Exchange Commission. The fund would not hold bitcoin directly. Instead, the AfterDark ETF would use at least 80% of ... (full story)