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ETF Net Flow USD (Per Fund)

Daily USD flow of a single ETF

PropertyValue
CategoryETF Analytics
UnitUSD
Resolution1d
AssetsBTC
TierPro
API EndpointGET /v1/etf/ticker
Fieldflow_usd

Overview​

ETF Net Flow USD (Per Fund) is the dollar value of shares created minus shares redeemed in one US spot Bitcoin ETF on a trading day. It shows how much investor money entered or left a specific fund, and is the per-fund breakdown of US Spot ETF Daily Net Flow (USD).

Formula​

Flowf,t=(Sf,t−Sf,t−1)×NAVf,t\text{Flow}_{f,t} = (S_{f,t} - S_{f,t-1}) \times \text{NAV}_{f,t}

Sf,tS_{f,t} = shares outstanding after trading day tt, NAVf,t\text{NAV}_{f,t} = the fund's NAV per share of day tt. Available for US spot funds only (non-US funds report NAV in local currency); empty on non-trading days and, for funds whose issuer publishes a day later, on the newest day until it is published.

Difference from the BTC flow​

ETF Net Flow BTC (Per Fund) is the change in the fund's BTC. For GBTC, Grayscale Mini and BTCW it also contains the sponsor fee paid in BTC; the USD flow does not.

Interpretation​

  • Positive values (green bars): net creations — new investor money entered the fund that day.
  • Negative values (red bars): net redemptions — investors withdrew money and the fund released BTC.
  • Zero values: no creations or redemptions; common for smaller funds that trade in whole creation baskets.
  • One fund in, another out on the same day: rotation between issuers (for example on fee changes) rather than a change in overall demand.

Use Cases​

  • Issuer market share: see which funds are winning or losing assets day by day.
  • Attribution of aggregate flows: identify the funds behind a large inflow or outflow day.
  • Fee and product events: measure the reaction to fee cuts, launches or conversions of a specific fund.
  • Clean investor flow: unlike the BTC flow, not distorted by sponsor fees paid in BTC.

API Usage​

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.blocklens.co/v1/etf/ticker?ticker=IBIT&fields=flow_usd&limit=30"

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"