BTC dropped to a low of $40,800 from around $45,000 within hours during early Wednesday, CoinDesk Indices data shows, roughly around the time when Singapore-based digital asset firm Matrixport published a report penned by Markus Thielen forecasting the U.S. Securities and Exchange Commission to reject all spot bitcoin ETF applications, overturning its Tuesday outlook projecting an imminent approval and a BTC rally to $50,000.