BlackRock's spot Bitcoin ETF, IBIT, has increased by 3.5%, marking consistent growth over the past three weeks, according to Bloomberg senior ETF analyst Eric Balchunas. The ETF has achieved a total gain of approximately 19% since the market downturn caused by the U.S.-Iran conflict. The easing of geopolitical tensions has bolstered investor confidence, contributing to the sustained performance of Bitcoin-related ETFs.