API Reference / Indicators

ETF flows

Daily net flows of US spot Bitcoin, Ether and Solana ETFs, per fund.

GEThttps://api.coinmico.com/v1/etf-flows/{asset}updates every 60 min

Daily net flow in USD for each listed fund and the total, with 5-day and 30-day windows. Sourced from fund disclosures (reference data, not measured by us) and updated each US trading day.

Path parameters

assetstringrequired

ETF underlying.One of: btcethsol

Query parameters

This endpoint takes no query parameters.

Response

key · symbol · namestring

Underlying asset.

funds[]object[]

ticker, issuer, flows per day.

days[] · gridobject

Trading days and per-fund matrix.

latest · last5 · last30object · number

Most recent day and window totals.

Every response also carries x-ratelimit-limit, x-ratelimit-remaining, x-ratelimit-reset and x-request-id. See Rate limits.

Errors

401missing_key

No x-api-key header or bearer token on the request.

401invalid_key

The key is unknown or has been revoked.

429quota_exceeded

More than 600 requests this hour. Wait for x-ratelimit-reset seconds.

404not_found

asset must be btc, eth or sol.

All errors share one shape: { error: { code, message, status } }. See Errors.

← ETF flows (all assets)Liquidations →

{ "key": "btc", "slug": "bitcoin", "symbol": "BTC", "name": "Bitcoin", "logo": "https://cdn.coinmico.com/coins/bitcoin-3af4e627853c.png", "days": [ { "day": "2024-01-11", "net": 655300000, "aum": null, "price": null, "cap": null }, { "day": "2024-01-12", "net": 203000000, "aum": null, "price": null, "cap": null } ], "funds": [ { "ticker": "IBIT", "issuer": "BlackRock", "fee": 0.0025, "netAssets": 66304480000, "traded": 1108802757, "premium": -0.001609, "day1": 22380000, "day5": 1017520, "day30": 1685788640, "cumulative": 65733430983.66 }, { "ticker": "FBTC", "issuer": "Fidelity", "fee": 0.0025, "netAssets": 14669567740.62, "traded": 130994973, "premium": -0.000978, "day1": -3580502.45, "day5": -380362571.18, "day30": 199720323.33, "cumulative": 10515270521.75 } ], "grid": [ { "day": "2026-10-09", "total": 21128078.55, "values": { "IBIT": 22380000, "FBTC": -3580502.45, "GBTC": 0, "BTC": 0, "BITB": 0, "ARKB": 0, "HODL": 2328581, "MSBT": 0, "BRRR": 0, "EZBC": 0, "BTCO": 0, "BTCW": 0 } }, { "day": "2026-10-08", "total": -244125629.17, "values": { "IBIT": -5544360, "FBTC": -197086985.17, "GBTC": -8203897, "BTC": 0, "BITB": -17713432.4, "ARKB": -20291277, "HODL": 0, "MSBT": 0, "BRRR": 0, "EZBC": 4714322.4, "BTCO": 0, "BTCW": 0 } } ], "latest": { "day": "2026-10-09", "net": 21128078.55 }, "windows": { "week": -681100293.25, "month": 1656147510.89, "quarter": 5830137406.18, "best": { "month": "2026-08", "net": 3522793683.76 }, "worst": { "month": "2026-06", "net": -4510447515.44 } }, "last5": -681100293.25, "last5Positive": 2, "last30": 1656147510.89, "last30Days": 22, "cumulative": 57106714665.87, "netAssets": 105844422150.6, "traded": 1440037593.9, "holdings": 1282351.44, "firstDay": "2024-01-11", "streak": { "sign": 1, "days": 1 }, "asOf": "2026-10-09", "updatedAt": "2026-10-10T22:00:27.820Z" }