US ETF BTC Holdings
BTC held by US-listed ETFs
| Property | Value |
|---|---|
| Category | ETF Analytics |
| Unit | BTC |
| Resolution | 1d |
| Assets | BTC |
| Tier | Basic |
| API Endpoint | GET /v1/etf/aggregate |
| Field | us_btc_holdings |
Overview
US ETF BTC Holdings tracks the total Bitcoin held specifically by US-listed spot Bitcoin ETF products. The US market dominates the global Bitcoin ETF landscape, with products like BlackRock's IBIT, Fidelity's FBTC, and the converted Grayscale GBTC collectively holding the vast majority of all ETF BTC. This metric isolates the US component to provide focused insight into the world's largest and most liquid regulated Bitcoin market.
US-listed ETFs are particularly important because they are accessible to the broadest range of institutional investors (pension funds, endowments, registered investment advisors) and retail investors through standard brokerage accounts. Flows into US ETFs are therefore the best proxy for mainstream American adoption of Bitcoin as an investable asset.
Formula
US ETFs are identified by matching against the etf_registry where country = 'US'. Currently this includes 11 US-listed spot Bitcoin ETFs approved by the SEC in January 2024.
Interpretation
- US holdings dominate global totals: Typically 90%+ of all ETF BTC is in US products, so this metric closely tracks the global total but isolates the most important jurisdiction.
- Divergence from total: If US holdings decline while total holdings rise, it suggests capital rotation from US to international products (or vice versa).
- Individual ETF dynamics: US holdings are driven primarily by the "Big Three" (IBIT, FBTC, GBTC). Large flow days are usually attributable to one or two products.
- Regulatory sensitivity: US ETF flows are sensitive to SEC actions, Congressional hearings, and US macro policy — making this metric a gauge of US regulatory climate.
Use Cases
- US institutional demand tracking: The most direct measure of American institutional and retail demand for Bitcoin through regulated channels.
- Regulatory impact analysis: Track how US-specific regulatory events affect ETF flows and holdings.
- Geographic flow analysis: Compare US vs. international ETF holdings to understand regional adoption differences.
- Market structure research: Analyze the competitive dynamics between US ETF issuers (BlackRock vs. Fidelity vs. Grayscale).
API Usage
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://api.blocklens.co/v1/etf/aggregate?start_date=2024-01-01&end_date=2024-12-31&limit=365"
Related Metrics
- Total BTC in ETFs — Aggregate BTC held by all ETFs
- Total ETF AUM — Aggregate AUM of all BTC ETFs
- ETF Daily Net Flow (BTC) — Daily BTC net flow into/out of ETFs