We're building the most comprehensive crypto data API we can, and it's still growing — there's always a coin, a field or an endpoint we haven't got to yet.
Please tell us about any data you think Crypto Data API should nail but doesn't. We're data nerds who love to geek out about market data, trading bots, AI agents, or how to make your trading stack work in general. Prefer a form? Send feedback.
— Sam and the CDA team
Join us on DiscordOur record of US spot ether ETF flows runs from Tuesday, July 23, 2024 to Friday, October 30, 2026: 28 months and 572 settled trading days, with cumulative net inflows of $12.32B. The strongest month was July 2025 (+$5.43B) and the weakest was October 2026 (−$1.61B). Each month links to its daily table: every fund's flow and the net total for each settled trade date.
| Month | Trading days | Inflow / outflow days | Net flow | Scale |
|---|---|---|---|---|
| October 2026 (latest) | 22 | 3 / 19 | −$1.61B | |
| September 2026 | 21 | 13 / 8 | +$831.3M | |
| August 2026 | 21 | 17 / 3 | +$1.85B | |
| July 2026 | 22 | 17 / 5 | +$367.2M | |
| June 2026 | 21 | 4 / 17 | −$530.2M | |
| May 2026 | 20 | 5 / 15 | −$541.3M | |
| April 2026 | 21 | 12 / 9 | +$356.0M | |
| March 2026 | 22 | 10 / 12 | −$45.8M | |
| February 2026 | 19 | 8 / 10 | −$369.8M | |
| January 2026 | 20 | 10 / 10 | −$342.6M |
| Month | Trading days | Inflow / outflow days | Net flow | Scale |
|---|---|---|---|---|
| December 2025 | 22 | 6 / 16 | −$616.3M | |
| November 2025 | 19 | 6 / 12 | −$1.42B | |
| October 2025 | 23 | 11 / 12 | +$570.1M | |
| September 2025 | 21 | 9 / 12 | +$285.6M | |
| August 2025 | 21 | 14 / 7 | +$3.87B | |
| July 2025 | 22 | 21 / 1 | +$5.43B | |
| June 2025 | 20 | 17 / 3 | +$1.17B | |
| May 2025 | 21 | 15 / 5 | +$564.2M | |
| April 2025 | 21 | 6 / 13 | +$66.1M | |
| March 2025 | 21 | 3 / 17 | −$389.0M | |
| February 2025 | 19 | 9 / 9 | +$60.0M | |
| January 2025 | 20 | 11 / 8 | +$101.5M |
| Month | Trading days | Inflow / outflow days | Net flow | Scale |
|---|---|---|---|---|
| December 2024 | 21 | 18 / 3 | +$2.08B | |
| November 2024 | 20 | 11 / 8 | +$1.06B | |
| October 2024 | 23 | 13 / 8 | +$43.0M | |
| September 2024 | 20 | 7 / 13 | −$46.0M | |
| August 2024 | 22 | 7 / 14 | +$6.2M | |
| July 2024 | 7 | 2 / 5 | −$483.6M |
GET /api/v1/market-intelligence/etf/eth/flows returns up to 1000 settled trade dates, oldest first, each with its trade_date, net flow_usd and source. Group by the first seven characters of trade_date to rebuild this monthly table.
curl -H "X-API-Key: cdk_live_yourkey" \ "https://cryptodataapi.com/api/v1/market-intelligence/etf/eth/flows?days=1000"
Pro unlocks every coin on the quant surfaces — whale positioning, dealer gamma (GEX), short-horizon regime probabilities, L2 order-book depth and full-universe funding — on the same key you already hold.
AI agents: subscribe key-in-hand with no browser and no card —
POST /api/v1/payments/agent-subscribe
(x402 gasless USDC on Base, Ethereum or Solana; call it once for the 402 payment instructions, sign, call again).