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Join us on DiscordSpot bitcoin ETFs saw net inflows of $5.25B over 21 trading days in May 2025. The largest single-day inflow was +$934.8M on Thursday, May 22, 2025, and the largest outflow was −$616.1M on Friday, May 30, 2025. 17 of the 21 days closed with net inflows and 4 with net outflows. By fund, IBIT led with net inflows of $5.91B, followed by BTC ($129.8M); GBTC had the largest net outflows at $451.1M. April 2025 saw net inflows of $2.97B over 21 trading days, a month-over-month change of +$2.28B.
One row per settled US trade date, in USD millions. Each fund column is that fund's net creation (positive) or redemption (negative); the last column is the net total across every US spot bitcoin ETF. Link to a day with #YYYY-MM-DD, e.g. #2025-05-30.
Settled figures only: a day appears once every fund has reported. Sources: Farside Investors (primary, with the per-fund breakdown) and SoSoValue (backup, net total only).
Each fund's net flow summed over the 21 trading days with a per-fund breakdown, largest inflow first.
GET /api/v1/market-intelligence/etf/btc/flows returns the newest days settled trade dates (up to 1000), oldest first: each row has trade_date, flow_usd (the net total across every fund) and its source. days=380 reaches back to 2025-05-01; keep the rows whose trade_date starts with 2025-05.
curl -H "X-API-Key: cdk_live_yourkey" \ "https://cryptodataapi.com/api/v1/market-intelligence/etf/btc/flows?days=380"
The day still being reported comes back separately as in_progress and is never in flows. Swap btc for eth or sol.
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