Etf Btc Aum

BTC spot-ETF assets under management (reconstructed estimate).

Returns one row: aum_usd_from_flows, btc_held_from_flows, btc_price_usd, cumulative_net_flow_usd, price_appreciation_usd, as_of, since, flow_days, plus method, source, excludes and a caveats list.

The _from_flows suffix is deliberate — GBTC converted holding an existing stake that never appears here as an inflow, so these cover BTC accumulated through flows since launch and understate the complex by roughly that seed. See excludes in the payload.

This 503'd on EVERY call from the 2026-07-24 CoinGlass retirement until 2026-08-22: CoinGlass was the only AUM feed and no free one exists. It is derivable though — AUM is coins held times price, and the daily flow history plus that day's close gives the coins. See FreeMarketCollector._refresh_etf_aum for the derivation and its biases.

cumulative_net_flow_usd is returned alongside deliberately: it is a DIFFERENT quantity from AUM (the gap is price appreciation), and conflating the two is the usual way this number gets misreported.