Bitcoin's price increased by 1.5% early Monday to $44,854.11 in anticipation of a possible U.S. Bitcoin ETF approval. BlackRock, Grayscale, and others recently submitted final filings to the SEC for Bitcoin ETF applications. The SEC deadline to decide on the Ark 21 Shares application is Wednesday, and decisions on others may come together. Approval is widely expected and would be a landmark moment for cryptocurrencies. Galaxy Digital estimates the addressable market for a US bitcoin ETF could reach $39 trillion in 3 years.