Wall Street has a new nighttime routine, and it’s not about remembering to wear a retainer. A new ETF would hold bitcoin products only during overnight hours after the markets close, shifting into short-term US Treasuries during the day, according to a filing last week with the Securities and Exchange Commission. The goal is to capitalize on bitcoin’s performance during the night and slumps during the day. The strategy, called the Nicholas Bitcoin and Treasuries AfterDark ETF (NGHT), is the latest interse ...