Bitcoin ETF Products Record Largest Single-Day Inflows of 2025

US spot Bitcoin ETF products recorded their largest single-day net inflow of 2025 on June 18, with combined flows exceeding $900 million across all issuers. BlackRock’s IBIT led the cohort, accounting for roughly 60% of total inflows, while Fidelity’s FBTC and ARK’s ARKB posted their strongest sessions in weeks. What Drove the Surge Several converging factors contributed to the outsized demand:

Macro tailwinds: softer-than-expected CPI data released earlier in the week reduced near-term rate-hike probability, pushing risk assets broadly higher. Options market activity: a cluster of call options at the $70,000 strike expiring end-of-month created dealer hedging demand in spot markets. Pension fund allocation: two mid-sized US state pension funds publicly disclosed initial Bitcoin ETF positions in 13F filings, reinforcing the institutional adoption narrative.

Cumulative AUM Milestone Total assets under management across all US spot Bitcoin ETFs crossed $62 billion following the session, cementing their place among the fastest-growing ETF launches in history. For context, gold ETFs took nearly three years to reach equivalent AUM after their 2004 debut. Market Context Bitcoin’s spot price rose 4.2% on the day, closing near $68,400. Perpetual futures funding rates across major venues remained moderate at 0.01–0.02% per 8-hour period, suggesting the move was driven by genuine spot buying rather than leveraged speculation. Analysts at several prime brokerages revised their Q3 Bitcoin price targets upward following the data, with median targets now clustered in the $75,000–$82,000 range.