Bitcoin spot ETFs recorded a net outflow of $51.0 million on August 19, 2026, according to verified flow data. Gross outflows across all tracked funds reached $57.0 million, while gross inflows totaled just $6.0 million — leaving the session firmly in negative territory.
BlackRock’s IBIT was responsible for $55.0 million of the day’s exits, representing 96.5% of total gross outflows — a concentration figure calculated by CoinsProbe from fund-level data. That single fund’s redemptions dwarfed activity across every other product combined.
ARK Invest’s ARKB was the only other fund to post outflows, contributing $2.0 million to the negative side of the ledger. Together, two funds accounted for all outflow activity, while zero funds finished the session neutral.
Fidelity’s FBTC was the sole fund to attract net new capital, pulling in $6.0 million in inflows. That figure partially offset IBIT’s and ARKB’s combined exits, resulting in the $51.0 million net outflow for the day.
Across the three tracked funds, the ratio of outflow funds to inflow funds stood at 2-to-1, with one fund posting positive flows, two posting negative flows, and none registering a flat session. The $6.0 million inflow from FBTC covered approximately 10.5% of the day’s total gross outflows.
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