ETFs API

Combined net assets of a coin's ETFs over time

The total net assets of all US spot ETFs on BTC or ETH, day by day, with the net flow into or out of them that day.

GET/api/external/etf/etf-net-assets-history/{symbol}

Get a free API key Try it in the API reference

What it returns

The combined net assets of all the US spot exchange-traded funds on a coin (BTC or ETH), day by day, with that day's net flow into or out of them. Oldest first, the newest limit days; a day the funds have not reported yet is left out. Not scoped to any chain. A coin with no tracked funds answers 404.

Chains

This endpoint is not tied to a chain: it takes no chain in its request.

Request

Send your key in the x-dex-data-key header. Replace each <placeholder> with a real value.

curl -H "x-dex-data-key: $DEXDATA_API_KEY" \
  "https://api.dexdata.io/api/external/etf/etf-net-assets-history/<symbol>"

Parameters
Parameter	Description
`limit` query · integer · optional	How many of the most recent days to return, 1 to 1000. Defaults to 90. Fewer come back when the funds' history is shorter. limit ≤ 350 keeps the answer under 32 KB.
`symbol` path · string · required	The coin ticker the funds hold: "BTC" or "ETH". Case-insensitive. Not a fund ticker, and not a token mint or contract address.

Response fields

A JSON response. Every field is always present; null means the value could not be established, never zero.

Response fields of Combined net assets of a coin's ETFs over time
Field	Type	Description
`symbol`	string	The coin, upper-cased.
`days`	object[]	Oldest first.
`days[].date`	string	The trading day, YYYY-MM-DD (UTC).
`days[].at`	integer	The start of that day, unix seconds (UTC).
`days[].netAssetsUsd`	number \| null	All the coin's funds' combined net assets that day, US dollars. null when not stated.
`days[].changeUsd`	number \| null	That day's net flow into (positive) or out of (negative) the funds, US dollars. null when not stated.

Price per call

Every call: 6 credits

Charged only when the call succeeds. Prices as of 2026-10-30; the current ones are always in the API reference.

ETF flows brief: a coin's ETF inflows and outflows in total
Same inputs: symbol.
One ETF's daily price, net asset value and premium over time
Same inputs: symbol.
Daily money flowing into or out of a coin's ETFs
The same daily flow broken down fund by fund.
Exchange-traded funds holding a coin: size, premium and holdings
Each fund's own net assets now.
One ETF's share price candles with shares traded
OHLC share price candles with shares traded for one crypto ETF such as IBIT or ETHA, per minute (last three sessions), hour (about a week) or day (whole history).
Grayscale trusts: holdings, share price, NAV and premium
Every Grayscale single-coin trust (ETC, BCH, LTC, ZEC, ...) with the coins it holds, its share price, its net asset value per share and the premium or discount, dated by market close.

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