U.S. spot Bitcoin exchange-traded funds (ETFs) collectively hold about 1.31 million BTC, valued at roughly $152.6 billion, according to a live tracker that aggregates fund disclosures and market prices. That equates to ~6.24% of Bitcoin’s 21 million max supply and reflects continued institutional allocation following a stretch of strong daily inflows last week.
Key Points
- Holdings & value: 1,310,247 BTC held by the 12 U.S. spot BTC ETFs, worth ~$152.65B at current prices (updated Sept. 15, 2025). Share of maximum supply: ~6.24%.
- Momentum check: Funds posted sizable net inflows late last week as capital rotated back into BTC; several data desks flagged >$550M in a single day.
- Market context: Growing ETF AUM underscores the role of regulated wrappers in channeling institutionalJ demand, even as flows remain sensitive to macro data and BTC price swings.
Why It Matters
Spot ETFs have become a primary3 on-ramp for institutions, simplifying BTC exposure within brokerage and retirement accounts. The scale—now over one and a quarter million coins—reduces liquid supply on exchanges and can amplify price moves when flows concentrate, both on up- and down-days. Recent inflow bursts highlight how macro catalysts(inflation prints, policy odds) and ETF fee wars can quickly swing demand.
By the Numbers (Today)
- Total BTC held: 1,310,247
- AUM (USD): ~$152.65B
- ETFs covered: 12
- % of 21M cap: ~6.239%
- Last updated By: Sept. 15, 2025.
Market Outlook
Analysts note that sustained inflows into spot funds tend to correlate with improvedJ BTC liquidity and tighter spreads, while outflow days can weigh on price. With the next run of U.S. macro prints and FOMC communications ahead, ETF creations/redemptions will remain a near-term gauge of institutional8 sentiment.
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