Spot Bitcoin ETFs suffer $1 billion weekly outflow for week ending May 15, extending losses after $630M dip on May 15

- U.S. spot Bitcoin ETFs recorded about $1.02 billion in net weekly outflows for May 12-15, 2026, ending a six-week inflow streak, flow trackers showed. (farside.co.uk) - The sharpest single-day move came on May 13, when investors pulled $630.4 million, followed by another $290.4 million of net outflows on May 15. (farside.co.uk) - SoSoValue and Farside Investors publish updated daily fund-flow tables for IBIT, FBTC, GBTC and other U.S. spot Bitcoin ETFs. (sosovalue.com)

U.S. spot Bitcoin exchange-traded funds posted roughly $1.02 billion in net outflows across the four disclosed trading days from May 12 through May 15, according to fund-flow tables published by Farside Investors and SoSoValue. (farside.co.uk) The reversal ended a six-week stretch of net inflows that had drawn money back into the category after a stronger April, according to Crypto Times, which cited SoSoValue data. Friday’s move extended the week’s losses after a $630.4 million withdrawal on May 13 and a further $290.4 million on May 15, Farside’s table showed. Bitcoin changed hands near $79,000 late on May 15, according to CoinDesk and CoinGecko price pages, after closing at about $81,052 on May 14 and $79,069 on May 15 in CoinGecko’s historical data. (sosovalue.com) The price action overlapped with the ETF withdrawals, though neither tracker assigns a cause to the flows. ### How large was the week’s withdrawal, and over what period was it recorded? Farside Investors’ daily table showed net withdrawals of $233.2 million on May 12, $630.4 million on May 13, inflows of $131.3 million on May 14, and outflows of $290.4 million on May 15. Added together, those four sessions amount to about $1.02 billion leaving U.S. spot Bitcoin ETFs. (farside.co.uk) Crypto Times described the move as the end of a six-week inflow streak and said the prior run had brought in about $3.4 billion. Its report cited SoSoValue data for the week ending May 15. (coindesk.com) ### Which funds saw the biggest redemptions on May 15? BlackRock’s iShares Bitcoin Trust, trading as IBIT, recorded the largest May 15 outflow at $136.2 million, according to Farside Investors. Grayscale’s GBTC lost $43.6 million, Fidelity’s FBTC lost $39.6 million, and ARK 21Shares’ ARKB shed $52.5 million, the same table showed. (farside.co.uk) SoSoValue’s dashboard listed IBIT as the largest U.S. spot Bitcoin ETF by net assets, at $66.74 billion, with FBTC at $15.18 billion and GBTC at $12.16 billion on the latest displayed update. BlackRock’s own product page for IBIT showed a May 14 net asset value of $46.19 and a sponsor fee of 0.25%. (cryptotimes.io) ### Was the selling concentrated in one day? May 13 accounted for the biggest single-day withdrawal of the week, with $630.4 million in net outflows across the products, according to Farside Investors. Crypto news sites including Decrypt and CoinDesk also described that move as the largest daily exit since January. (farside.co.uk) May 14 briefly interrupted the slide with $131.3 million of net inflows, Farside’s table showed, before the group returned to net redemptions on May 15. That sequence left the week negative even before any later updates from issuers or data vendors. (sosovalue.com) ### Did Bitcoin’s price fall at the same time? CoinGecko’s historical table showed Bitcoin closing at $80,481 on May 12, $79,278 on May 13, $81,052 on May 14 and $79,069 on May 15. That left the token lower on two of the final three sessions covered by the ETF flow data. (farside.co.uk) CoinDesk reported on May 15 that bitcoin fell below $79,000 as rising bond yields and inflation worries hit risk assets. That explanation came from CoinDesk’s market report, not from ETF issuers or the flow trackers themselves. (farside.co.uk) ### Where do these numbers come from, and what should readers watch next? SoSoValue and Farside Investors both publish daily tables for U.S. spot Bitcoin ETF subscriptions and redemptions, broken out by fund. Their pages list products including IBIT, FBTC, GBTC, Bitwise’s BITB, VanEck’s HODL and others, with updates appearing after issuer disclosures are compiled. (coingecko.com) The next concrete data point will be the next daily ETF flow update from SoSoValue and Farside Investors for U.S. trading after May 15. BlackRock, Fidelity, Grayscale, ARK 21Shares and other issuers will remain the named participants to watch in those tables, alongside Bitcoin’s spot price around the $79,000 to $81,000 range seen on May 14 and May 15. (coindesk.com) (sosovalue.com)

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