Farside Investors data revealed significant activity in the Bitcoin spot ETF market on March 12th, with a net inflow of 505 million US dollars. Notably, BlackRock IBIT saw an inflow of 563 million US dollars, while Grayscale GBTC experienced an outflow of 494 million US dollars. This indicates an intriguing shift in investor sentiment towards these particular ETFs and suggests potential implications for the broader cryptocurrency market.