ETFs API

One Grayscale trust's premium or discount to NAV over time

A Grayscale single-coin trust's share price, NAV per share and premium or discount, day by day, by the coin it holds (ETC, BCH, ZEC…; BTC up to its ETF conversion).

GET/api/external/etf/grayscale-trust-premium-history/{symbol}

Get a free API key Try it in the API reference

What it returns

One Grayscale single-coin trust, day by day: the price a trust share traded at, its net asset value per share, and the premium (positive) or discount (negative) between them, in percent. Oldest first, the newest limit days. Before a trust's shares were quoted, the price and premium are null. The history can have gaps of months and can end weeks before today; date says which day each figure is for. Not scoped to any chain. A coin with no trust history 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/grayscale-trust-premium-history/<symbol>"

Parameters
Parameter	Description
`limit` query · integer · optional	How many of the most recent days to return, 1 to 5000. Defaults to 90. Fewer come back when the history is shorter. limit ≤ 300 keeps the answer under 32 KB.
`symbol` path · string · required	The coin the trust holds, e.g. "ETC", "BCH" or "ZEC" — as `grayscale-trusts` lists them; "BTC" gives the bitcoin trust up to its conversion into an ETF. Case-insensitive.

Response fields

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

Response fields of One Grayscale trust's premium or discount to NAV over time
Field	Type	Description
`symbol`	string	The coin the trust holds, upper-cased.
`days`	object[]	Oldest first, one per day.
`days[].date`	string	The trading day, YYYY-MM-DD (UTC).
`days[].at`	integer	The start of that day, unix seconds (UTC).
`days[].marketPriceUsd`	number \| null	The price one trust share traded at, US dollars. null before the shares were quoted.
`days[].navUsd`	number \| null	Net asset value per trust share, US dollars. null when not stated.
`days[].premiumDiscountPct`	number \| null	How far the share price stood above (positive) or below (negative) the net asset value, percent. null before the shares were quoted.

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.

Exchange-traded funds holding a coin: size, premium and holdings
Same inputs: symbol.
Daily money flowing into or out of a coin's ETFs
Same inputs: symbol.
ETF flows brief: a coin's ETF inflows and outflows in total
Same inputs: symbol.
Grayscale trusts: holdings, share price, NAV and premium
List the trusts and the coins they hold first, then read one trust's history.
One ETF's daily price, net asset value and premium over time
The same premium and net asset value series for exchange-traded funds.
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.

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