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ETF Market Share (Per Fund)

Percentage of total ETF Bitcoin holdings belonging to a specific fund

PropertyValue
CategoryETF Analytics
Unit%
Resolution1d
AssetsBTC
TierPro
API EndpointGET /v1/etf/ticker
Fieldmarket_share_pct

Overview​

ETF Market Share (Per Fund) measures the percentage of total Bitcoin held across all tracked ETFs that belongs to a specific fund. It captures the competitive position of individual funds within the broader ETF ecosystem, revealing which products dominate and how market dynamics shift over time.

Formula​

Market Sharet=BTC Holdings (Fund)t∑all fundsBTC Holdingst×100\text{Market Share}_{t} = \frac{\text{BTC Holdings (Fund)}_{t}}{\sum_{\text{all funds}} \text{BTC Holdings}_{t}} \times 100

Interpretation​

  • High market share (e.g., >30%): Dominant fund in the ecosystem. IBIT and GBTC have historically commanded the largest shares.
  • Rising market share: The fund is growing faster than the overall ETF market — attracting more net inflows than competitors.
  • Falling market share: The fund is losing ground to competitors, even if its absolute holdings are stable.
  • Near-zero market share: Small or niche fund with minimal impact on overall market dynamics.
  • Sudden drops: May signal large competitor inflows (new ETF launch) rather than outflows from this fund.

Use Cases​

  • Competitive positioning: Track whether iShares (IBIT) is maintaining dominance vs Fidelity (FBTC) and others.
  • Market concentration risk: Is the ETF market overly concentrated in one fund?
  • Fund maturity analysis: New ETFs typically start with low share and grow; mature funds defend their position.
  • Rotation detection: When one fund's share drops while another rises, capital rotation between products is occurring.

API Usage​

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.blocklens.co/v1/etf/ticker?start_date=2024-01-01&end_date=2024-12-31&limit=365"