In today’s Bitcoin ETF news, Tuesday, May 26, someone sold 29 million shares of BlackRock’s iShares Bitcoin Trust in a single transaction worth approximately $1.29 billion, the largest block transaction in IBIT’s fifteen-month history. Since then, Bitcoin has fallen almost -5% before stabilizing between $73,000 and $74,000.
Here’s the central tension this article uncovers: If a $1.3 billion sale of a Bitcoin ETF can’t crash Bitcoin, what does that tell you about the current market situation?
“It dwarfs every other transaction of the day and maybe ever,” said Alex Thorn of Galaxy Digital, commenting on the IBIT sale via X on May 26, 2026. The price of Bitcoin remained essentially unchanged that day.
Thorn’s framing is important. The analyst did not report any danger; it signaled something far more significant: evidence that the institutional Bitcoin market infrastructure has grown enough to absorb shocks that would have caused a 20-30% wipeout in a previous cycle.
$BTC shows a slight recovery here.
The key level here is $74,500, which needs to be reclaimed for any strong rally.
If Bitcoin fails to reclaim this area, the next target would be $70,000. pic.twitter.com/d1iI658q2o
— Ted (@TedPillows) May 29, 2026
Bitcoin ETF News: What the $1.3 Billion Number Really Tells You
A dark pool may sound ominous, but it functions as a private auction house for institutional transactions, executed off-exchange to avoid affecting public prices. Recently, a $1.29 billion Bitcoin block trade took place before the market opened, preventing a potential market crash that could have occurred with a direct market sale.
The discretion of this transaction was crucial: if it had hit the public order book, it could have triggered stop-losses and liquidations, leading to a chaotic decline in prices. Instead, the depth of the existing market absorbed trading without disruption, indicating market maturity rather than crisis.
BlackRock’s IBIT ETF, whose assets now exceed $50 billion, illustrates this institutional activity. The identity of the seller remains unknown, with speculation ranging from a hedge fund to a sovereign wealth fund to a family office, all suggesting a sophisticated strategy to exit quietly without triggering panic.
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Can Bitcoin Reclaim $80,000 After BlackRock’s IBIT Shock?
Bitcoin price was under pressure before the recent event, dropping from around $82,500 on May 6, 2026 to $73,200 on May 28. The 50-day EMA acts as immediate support at $73,150, while the 200-day EMA at $78,500 acts as resistance.
The $73,000 to $73,500 zone is crucial, with Swissblock data indicating that a drop below this level could trigger a decline towards $70,500, close to the previous support at $70,740 from April 12, 2026.
Additionally, BTC spot ETFs faced significant outflows, with $1.039 billion flowing out for the week of May 11-15, ending a six-week inflow streak. Since May 14, $2.26 billion has been withdrawn from U.S. spot Bitcoin ETFs, and net accumulation for 2026 has fallen to just 4,500 BTC, erasing much of the previous buying momentum.
- Case of the bull: Bitcoin holds $73,000 through the close of the week. ETF flow data stabilizes and reverses. The dark pool trade is absorbed as a one-time rebalancing event and BTC USD begins to rebuild towards the $80,000 level. Cumulative institutional demand remains structurally intact.
- Base case: Bitcoin consolidates in the $73,000-$75,000 range for one to two weeks while the market digests overlapping pressures, ETF outflows, post-CLARITY Act regulatory uncertainty, and broader macroeconomic positioning. No clear directional break in either direction.
- Bear case: A decisive close below $73,000 triggers a liquidation cascade towards the mid-$60,000s. Leveraged long positions, already numerous, as evidenced by the $700 million in long liquidations on May 28 alone, amplify the downward movement. The fear and greed index, already at 25/100, sinks even further into extreme fear territory.
Are ETF Flows Critical to Future Cryptocurrency Price Actions?
(SOURCE: CoinGlass)
In other Bitcoin ETF news, monitor weekly ETF flow data from CoinGlass and SoSoValue as your primary futures signal. These numbers will confirm or contradict everything the price chart seems to say.
One additional data point to keep in perspective: Despite the current streak of capital outflows, BlackRock’s revenue from its Bitcoin ETF now exceeds that generated by some of its flagship stock index funds.
The company also filed an iShares Bitcoin Premium Income ETF, seeking to overlay yield strategies on BTC holdings. BlackRock is not withdrawing from Bitcoin. It builds a deeper product stack around it, which changes the way you should read short-term feed data.
Analyzing Bitcoin using ETF flow data alone, what analysts at Swissblock and elsewhere call the core methodology for analyzing Bitcoin in the institutional era, is to follow the most transparent signal of conviction of large sums of money. At present, this signal calls for caution. It is not said to go out.
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The article Bitcoin ETF News: BlackRock IBIT Dark Pool Selling $1.3 Billion – Why Didn’t BTC Crash? appeared first on 99Bitcoins.
