The US-traded spot bitcoin ETFs added $2.4 billion worth of bitcoin over the past month, resuming positive inflows after a period of flat or negative flows. BlackRock's iShares Bitcoin Strategy ETF has crossed $20 billion in assets under management for the first time. As of Monday, June 3rd, IBIT holds over 290,000 bitcoins valued at over $20 billion. The average daily inflow to bitcoin ETFs has been $140 million since May 16th. Experts say the ability to regain investor interest after market downturns shows the resilience and staying power of bitcoin ETFs.