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BTC ETF Flows (btc.etf-flows)

Spot BTC ETF flow read: net daily flows, aggregate AUM (sourced from per-issuer pages), and per-issuer breakdown across iShares Bitcoin Trust (IBIT), Fidelity Wise Origin Bitcoin Fund (FBTC), Grayscale Bitcoin Trust (GBTC), and other approved spot ETFs

Tier: basic | 8 metrics

Metrics included: bitcoin-price, btc-etf-net-flow, btc-etf-cumulative-flow, btc-etf-aum, btc-etf-ibit-flow, btc-etf-fbtc-flow, btc-etf-gbtc-flow, etf-ibit-intraday-quote

Metrics in this briefing

• Bitcoin Price: Current Bitcoin spot price in US dollars, updated every 2 minutes (CoinGecko or Coinbase; each value names its own) Source: CoinGecko or Coinbase, Every 2 minutes.
• Spot BTC ETF Net Flow (Daily): Daily net inflow/outflow across all US spot Bitcoin ETFs in USD millions (Farside Investors)
• Spot BTC ETF Cumulative Flow: Cumulative net inflows over tracked history in USD millions. NOT inception-to-date: the upstream table is a rolling window, so metadata.coverage_from states the true start and metadata.covers_launch_epoch says whether Jan 2024 is included.
• Spot BTC ETF Total AUM: Aggregate assets under management across all US spot Bitcoin ETFs in USD millions: PreReason's calculation, the sum of each issuer's AUM as stockanalysis.com publishes it
• iShares Bitcoin Trust (IBIT) Daily Flow: Daily net inflow/outflow for iShares Bitcoin Trust (IBIT) in USD millions (Farside Investors)
• Fidelity Wise Origin Bitcoin Fund (FBTC) Daily Flow: Daily net inflow/outflow for Fidelity Wise Origin Bitcoin Fund (FBTC) in USD millions
• Grayscale Bitcoin Trust (GBTC) Daily Flow: Daily net inflow/outflow for Grayscale Bitcoin Trust (GBTC) in USD millions
• etf-ibit-intraday-quote

Correlations

Measured over 30 days:

• Spot BTC ETF Net Flow (Daily) and Bitcoin Price

Questions about the BTC ETF Flows briefing

What is in the BTC ETF Flows briefing?

Spot BTC ETF flow read: net daily flows, aggregate AUM (sourced from per-issuer pages), and per-issuer breakdown across iShares Bitcoin Trust (IBIT), Fidelity Wise Origin Bitcoin Fund (FBTC), Grayscale Bitcoin Trust (GBTC), and other approved spot ETFs. It holds 8 metrics and 1 correlation pair over 30 days, each figure with the date it describes and the source it came from.

Which plan reads the BTC ETF Flows briefing?

The Basic plan reads it, and every plan above Basic.

How does an AI agent read the BTC ETF Flows briefing?

Over MCP, with the get_context tool and the briefing id btc.etf-flows. Over REST, with GET https://api.prereason.com/api/context?briefing=btc.etf-flows and an API key, as Markdown (the default) or JSON (format=json).

Can I read the BTC ETF Flows briefing as of a past date?

Yes, with date=YYYY-MM-DD. A dated read serves only periods released by that date, and each figure says when it was public, or that it may be a later revision. How far back depends on the plan; on the Basic plan: The last 3 years. Higher plans reach further.

Where does the data in the BTC ETF Flows briefing come from?

Each figure names its source and the date it describes. The data sources page (https://www.prereason.com/data-sources) lists every source PreReason reads.

API: GET /api/context?briefing=btc.etf-flows

Format options: ?format=markdown (default) or ?format=json

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