5月27日、ブラックロックのビットコインETF「IBIT」において、2920万株（約12億6000万ドル相当）のブロック取引が43.16ドルで成立した。この取引によるETFおよびビットコイン自体の価格変動はほぼ見られなかった。市場参加者は、組織的な流動性チャネルを通じてこの売り注文を吸収し、無秩序な価格修正を回避した。
この取引は東部標準時午前10時30分にダークプールで実行され、同日のIBITの取引高の約35%を占めた。IBITの終値は0.09%高の42.99ドルとなり、ビットコインは1.73%安の75,911ドル近辺で推移した。ビットコインは取引成立直後に一時1%下落したものの、すぐに回復した。
ユーザーの間では、13億ドル規模のIBITダークプール取引がほとんど価格に影響を与えずに吸収されたことから、市場の流動性の高さが注目された。一方で、継続的なETFからの流出を指摘し、機関投資家によるリスク低減や資産の入れ替えである可能性を推測する声も上がった。
$1.29 BILLION dark pool sell hit BlackRock’s IBIT Bitcoin ETF yesterday (Tuesday).One whale dumped ~29 million shares in a single block at ~$43.16. Biggest single trade in IBIT history. Not BlackRock selling — a big client exiting. Market absorbed it… for now #Bitcoin #IBIT pic.twitter.com/XWb7enQuGi
— WealthSyndicate $₿ (@Coachcody91) 2026年5月27日
✦ Bitcoin $BTC price remains stable despite $1.3B block sale by BlackRock ETF:
— ZoneCrypto (@_ZoneCrypto_) 2026年5月27日
Bitcoin $BTC's value held steady even after a significant $1.3 billion block sale by an unidentified holder of BlackRock's iShares Bitcoin $BTC Trust (IBIT), which analysts interpreted as a signal of…
Someone just dumped $1,290,000,000 of BlackRock's Bitcoin ETF in ONE trade.
— Valerii (@ValeriiXV) 2026年5月27日
Dark pool. Anonymous. 10:30am.
Here's everything you need to know 🧵👇
━━━━━━━━━━━━━
1/ The numbers are insane.
29.2 million IBIT shares sold in a single dark pool block trade.
22x… pic.twitter.com/M8vU0mCVAM
Bitcoin shrugs off $1.3B IBIT block trade with minimal price impact. A massive BlackRock iShares Bitcoin Trust print was absorbed smoothly, highlighting deep liquidity and steady demand even at scale. #Bitcoin #IBIT #ETF #Crypto #CryptoNews
— Green Candle Gazette (@GCandleGazette) 2026年5月27日
A single investor sold $1.29B of #BlackRock's #IBIT in a dark pool trade Tuesday, the largest IBIT block trade on record. US spot #Bitcoin ETFs have seen $2.26B in outflows over the past two weeks. BTC trading near $75K. #ETF
— Ridgeway Financial Services (@Ridgeway_fs) 2026年5月27日
AIによるレポート AIによって生成された画像
Bitcoin briefly climbed to just under $78,000 on Tuesday before retreating below $76,000 following a reported $1.289 billion block sale of BlackRock's IBIT shares. The move occurred as US stock indexes posted gains amid optimism over a potential Middle East agreement announced by President Trump. Bitcoin traded near $76,000 after the reversal.
Bitcoin dropped below $73,000 on Thursday, reaching a six-week low, as renewed US military strikes on Iran escalated geopolitical risks and triggered heavy selling across crypto markets. Spot Bitcoin ETFs saw sharp outflows, with BlackRock's IBIT alone shedding $528 million in a single day. The move coincided with nearly $1 billion in liquidations across derivatives platforms.
AIによるレポート
BlackRock’s digital assets ETFs, managing nearly $60.7 billion in assets, produced $42 million in fees during the first quarter of 2026. This figure represented 1.75% of the firm’s total ETF fees, despite comprising just 1.11% of ETF assets under management. The revenue highlights crypto’s higher fee rates but also its vulnerability to market swings.
Following a mid-week rally above $68,000, Bitcoin retreated toward $70,000 by early March 6, 2026, erasing $110 billion in market capitalization amid worsening Iran conflict, rising oil prices, and a strengthening U.S. dollar. The pullback occurs despite ongoing institutional adoption, with $2.6 billion in Bitcoin options set to expire, heightening volatility risks.
AIによるレポート
U.S. spot bitcoin ETFs have seen nine straight days of net outflows, the longest such streak since the funds launched in January 2024. Investors withdrew about $2.8 billion over the period, with $1.3 billion exiting this week alone.
Bitcoin surged above $68,000 on March 2, 2026, as cryptocurrency markets rebounded amid a muted global reaction to escalating tensions in the Middle East. The rally followed strong U.S. manufacturing data, with the ISM PMI rising to 52.4 in February, signaling economic expansion. Ether and other major coins also gained, adding over $100 billion to the total market capitalization in under an hour.
AIによるレポート
Bitcoin's price has fallen below $68,000 as escalating US-Iran conflicts drive volatility in cryptocurrency markets. The drop follows a US-Israel attack on Iran and recent statements from leaders on both sides, compounded by weak US jobs data. Other major coins like Ethereum and XRP have also declined.