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/api/etf/fund/:ticker
GETAvailable

Single ETF detail

Single ETF detail (profile and flow history)

GET/api/etf/fund/:ticker

Request

Query parameters

NameTypeRequiredDefaultAllowed valuesDescription
ticker pathstringRequired——Fund ticker (letters only, upper-cased); 404 if unknown. Example: IBIT

Parameters marked “path” are part of the URL.

Example request

curl -s "https://www.coinboss.com/api/etf/fund/IBIT"

Response fields

The field table is generated from real responses, so it lists exactly what the endpoint returns. Paths use a[] for array items and {*} for objects keyed by a dynamic name such as a coin or an exchange.

FieldTypeUnitDescription
successboolean—true when the request succeeded. On failure the body is `{ success: false, code, error, request_id }`.
tickerstring—Fund ticker.
assetstring—Asset symbol.
issuerstring—Fund issuer.
priceobject—Last price in the quote currency (USD or USDT unless stated).
price.currencystring—Currency / asset symbol.
price.latestobject—Most recent record.
price.latest.datestring—Calendar date (UTC).
price.latest.closenumber—Close price of the period.
price.latest.opennumber—Open price of the period.
price.latest.highnumber—High of the period.
price.latest.lownumber—Low of the period.
price.latest.volumenumber—Volume.
price.change_absnumberUSDLatest daily close of the fund share minus the previous trading day's close.
price.change_pctnumber%Percentage change.
price.week52_highnumberUSDHighest daily high of the fund share over the 365 calendar days up to the latest price date.
price.week52_lownumberUSDLowest daily low of the fund share over the 365 calendar days up to the latest price date.
price.avg_volume_10dnumbersharesAverage daily trading volume of the fund over the last 10 trading days, in shares.
price.countnumber—Number of items.
price.dataarray—Payload.
price.data[]object—Payload.
price.data[].datestring—Calendar date (UTC).
price.data[].opennumber—Open price of the period.
price.data[].highnumber—High of the period.
price.data[].lownumber—Low of the period.
price.data[].closenumber—Close price of the period.
price.data[].volumenumber—Volume.
fundobject—Fund-level snapshot values; each is the last known value and may date from different days (see `aum_as_of`).
fund.aum_usd_millionnumbermillion USDMost recent non-null assets under management of the fund, valid as of `aum_as_of`.
fund.aum_as_ofstring—Trading day (YYYY-MM-DD) that `aum_usd_million` refers to.
fund.estimated_holdingsnumbercoinEstimated coins held by the fund: last known AUM ÷ current spot price of the asset; an estimate, not an issuer-reported holding.
fund.fee_pctnumber%Annual management fee of the fund in percent (0.25 = 0.25 % per year); last known value from a third-party source.
fund.mkt_share_pctnumber%Fund AUM as a percentage of the underlying coin's total market cap (not its share among ETFs); last known third-party value.
fund.volume_usd_millionnumbermillion USDTrading volume of the fund on the last day a third-party source reported it.
fund.cum_inflow_official_millionnumbermillion USDCumulative net inflow since launch as published by a third-party source (last known value); may differ from the summed `flows.latest.cum_total`.
flowsobject—Daily net-flow history of the fund with running total; amounts are in million USD (`unit`).
flows.unitstring—Unit of the values in this object.
flows.latestobject—Most recent record.
flows.latest.datestring—Calendar date (UTC).
flows.latest.flownumber—Net creation / redemption flow of the day.
flows.latest.cum_totalnumber—Cumulative total.
flows.latest.sum_7dnumber—7-day sum.
flows.countnumber—Number of items.
flows.dataarray—Payload.
flows.data[]object—Payload.
flows.data[].datestring—Calendar date (UTC).
flows.data[].flownumber—Net creation / redemption flow of the day.
flows.data[].cumnumber—Cumulative net flow since listing.
premiumobject—Premium (+) or discount (−) of the market price to NAV.
premium.unitstring—Unit of the values in this object.
premium.notestring—Note.
premium.countnumber—Number of items.
premium.dataarray—Payload.
premium.data[]object—Payload.
premium.data[].datestring—Calendar date (UTC).
premium.data[].premiumnumber—Premium (+) or discount (−) of the market price to NAV.

Generated 2026-11-11 23:00 UTC from 1 real responses.

Example response

/api/etf/fund/IBIT · Real response captured 2026-11-13 03:58:19 UTC. Long arrays and maps are shortened for display: flows.data had 712 items; price.data had 713 items; premium.data had 64 items.

  • {
    • "success": true,
    • "ticker": "IBIT",
    • "asset": "BTC",
    • "issuer": "BlackRock",
    • "price": {
      • "currency": "USD",
      • "latest": { … 6 },
      • "change_abs": -1.88,
      • "change_pct": -4.4508,
      • "week52_high": 59.56,
      • "week52_low": 32.84,
      • "avg_volume_10d": 52099530,
      • "count": 713,
      • "data": [ … 2 ]
      },
    • "fund": {
      • "aum_usd_million": 62297.756,
      • "aum_as_of": "2026-11-11",
      • "estimated_holdings": 905689.4173,
      • "fee_pct": 0.25,
      • "mkt_share_pct": 3.995,
      • "volume_usd_million": 2604.817,
      • "cum_inflow_official_million": 65711.051
      },
    • "flows": {
      • "unit": "million_usd",
      • "latest": { … 4 },
      • "count": 712,
      • "data": [ … 2 ]
      },
    • "premium": {
      • "unit": "pct",
      • "note": "sparse_snapshot",
      • "count": 64,
      • "data": [ … 2 ]
      }
    }

Details

Authentication
None. Public endpoint.
Rate limit
1200 requests per minute per IP
Server cache
5m
Edge micro-cache
10s
Update frequency
hourly (prices at minute 20, flows at minute 15); daily bars
Window
stored daily price and flow history; 52-week high/low and 10-day average volume
Data sources
Single-fund page data: daily fund prices from a public market-data site, flows from a public ETF flow tracker.
Exchange coverage
36 tracked US spot ETF tickers (404 for unknown tickers).
Sorting
date ascending
Units
USD (fund price), million USD (flows, AUM), percent (premium, fee), coins (estimated holdings)
Method
estimated_holdings = fund AUM in USD / latest coin price (an estimate, not issuer-reported holdings).
Timestamps
Unix epoch milliseconds (UTC) unless the field description says otherwise
Response format
json
Stability
Stable

Live status

AvailableChecked 2026-11-13 03:58:19 UTCHTTP 20015 msSchema matchesNewest data point 28h old

Availability, last 30 days

100% of 410 checks passed

Errors

Failed calls share one shape on every endpoint. The full list is on the errors page. Errors and rate limits →

CodeHTTPMeaningWhat to do
INVALID_PARAM400A required parameter is missing or a value is not accepted. `param` names the parameter when it is known.Do not retry unchanged; fix the request.
UNAUTHORIZED401The `CB-API-KEY` header was sent but the key is unknown or revoked. Public data needs no key — drop the header or use a valid key.Do not retry unchanged.
FORBIDDEN403The route is not part of the public API (internal or account-only).Do not retry.
NOT_FOUND404Unknown route, or the requested coin / exchange / fund does not exist.Do not retry; check the path and identifiers against the catalog.
RATE_LIMITED429More requests than the per-minute limit. `Retry-After` gives the seconds to wait.Wait for `Retry-After`, then retry with backoff.
INTERNAL500Unexpected server error. The message is generic by design; quote `request_id` when reporting it.Retry once after a few seconds; report it with the request id if it persists.
UPSTREAM_FAILED503The data source behind this endpoint did not answer in time. No stale or substitute numbers are returned in its place.Retry with backoff; check the status page.
UNAVAILABLE501 / 503The dataset is temporarily not ready (cache warming) or the endpoint has no lawful public source yet.Retry later; the catalog marks endpoints that are unavailable by design.
REQUEST_FAILED200Some older endpoints answer HTTP 200 with `success: false`. Always check `success`, not only the HTTP status.Depends on the message; treat as a failed request.

Try it

GET/api/etf/fund/:tickerAvailable
Parameters

string — Fund ticker (letters only, upper-cased); 404 if unknown.

Request URLhttps://www.coinboss.com/api/etf/fund/IBIT
Choose an endpoint and press “Send request”. The response, headers and timing will appear here.