
Altcoins6 min read
ARK Development Report - June 12, 2026
Welcome to our latest Weekly Development Report, where we highlight ongoing progress across our ecosystem. The big story this week is Proof of Possession support landing across the stack: Mai
US spot Bitcoin ETFs broke a nine-day inflow streak on Friday, posting $201.8 million in net outflows. The reversal came as Bitcoin traded below $78,000, with total ETF net assets slipping ba

US spot Bitcoin ETFs broke a nine-day inflow streak on Friday, posting $201.8 million in net outflows. The reversal came as Bitcoin traded below $78,000, with total ETF net assets slipping back under $100 billion after crossing that mark just a day earlier, according to SoSoValue data.
The outflow was led by ARK 21Shares' ARKB, which lost $114.9 million. Bitwise's BITB followed with $49.7 million in withdrawals, and BlackRock's IBIT, still the largest fund in the category, shed $33.4 million. Morgan Stanley's Bitcoin Trust was the only fund in the green, adding $9.3 million, per Farside Investors data.
One red day does not erase the run that preceded it. The nine sessions before Friday brought in more than $3 billion, and August as a whole remains positive at $3.3 billion with one trading day left in the month. That puts the month on track to be one of the stronger stretches of 2026 for the category.
How The Year Got Here
This year's ETF flow story has been anything but smooth. Bitcoin spot ETFs recorded $5.4 billion in net outflows during the first half of 2026, the first negative half-year since the products launched in January 2024. That stretch tested confidence in the vehicles that had, until then, mostly moved in one direction.
Momentum turned in the back half of the year. A seven-session inflow run in July pulled in nearly $1 billion before snapping on July 24 with a single-day outflow of $225.2 million. Buyers came back in the first week of August, and a five-day streak from August 3 to 7 brought in $853.5 million, with IBIT alone responsible for 81% of that total.
Flows stayed choppy through mid-August, dipping negative from August 12 to 14, before another run began on August 17. That stretch fed directly into the nine-day streak that ended Friday, briefly pushing total category assets above $100 billion for the first time.
Bitcoin's own price path tracked this volatility. The coin traded near $62,700 in early August, climbed back above $80,000 by late August on the back of the ETF recovery and a Nvidia earnings beat that lifted risk assets broadly, then slipped after Federal Reserve official Kevin Warsh downplayed softer inflation data. It now sits around $78,100.
IBIT Still Dominates, But Concentration Is A Risk
BlackRock's IBIT remains the dominant force in the category by a wide margin. The fund has pulled in a cumulative net inflow of roughly 782,000 BTC and holds close to $59 billion in assets, dwarfing Fidelity's FBTC in second place. On many of the strongest inflow days this year, IBIT alone has accounted for 60% to 80% of the total category flow.
That concentration cuts both ways. It shows institutional demand still runs deep for the most liquid, most-traded product, and IBIT's depth keeps execution costs low for large orders. But it also means the entire category's mood can hinge on a single fund's daily flow, and a bad day for IBIT can read as a bad day for Bitcoin sentiment overall, even when smaller funds are steady.
Altcoin ETFs Are Not Following Bitcoin Down
The split between Bitcoin and altcoin ETFs on Friday was clear. Ether ETFs added $102.2 million and XRP ETFs added $26.2 million, both continuing streaks that have held since mid-August, according to SoSoValue. Neither category has recorded a down day in roughly two and a half weeks.
Solana ETFs have had an even steadier run. Bloomberg ETF analyst Eric Balchunas noted the category has taken in $1.7 billion in cumulative flows without a sustained losing stretch, a turnaround from what he called a "nightmare downturn" earlier in the year. Bitwise's Solana fund also became the first in its category to cross $1 billion in assets.
This divergence matters for how the current pullback should be read. If Bitcoin ETFs were bleeding alongside Ether, XRP, and Solana funds, it would point to a broad risk-off move across crypto. Instead, the outflow looks concentrated in Bitcoin products, tied more to profit-taking after the nine-day run and price hesitation below $80,000 than to a shift away from crypto exposure generally.
What To Watch Next
One outflow day after nine straight inflow days is not, on its own, a trend reversal. August's $3.3 billion net positive figure, with a day still left to report, shows the month held up despite Friday's pullback. The bigger question is whether Bitcoin can clear $80,000 again and hold it, which would likely determine whether ETF flows resume climbing or stay choppy into September.