Crypto

Spot BTC and ETH ETF flows and holdings

From the issuers' own daily holdings files: iShares, Bitwise and ARK 21Shares for bitcoin, iShares and Bitwise for ether. History from 20 August 2026. Docs: https://xoomar.com/markets/api/etf-flows

get/api/markets/etf-flows

Request

  • Base URL: https://xoomar.com
  • URL: https://xoomar.com/api/markets/etf-flows
  • Auth: one of:
    • none
    • API key in header x-api-key

Query parameters

asset'btc' | 'eth'

Asset

daysinteger

Window in days (default 90, max 730)

Response

OK

updatedAtstring date-time

When the response was built; a few dated feeds give the date of their newest row instead

source'xoomar.com'
docsstring
licensestring

Data terms

attributionstring
canonicalUrlstring uri

The matching page on xoomar.com

Changes

No recorded changes to this operation across all 1 revision of this API.