BlackRock BTC ETF sees $1.3B block sale

TLDR

BlackRocks iShares Bitcoin Trust (IBIT) just saw a roughly $1.3 billion single block trade, highlighting heavy ETF outflows but also surprisingly deep institutional liquidity for Bitcoin.

1. A nearly 29 million share IBIT block worth about $1.3 billion crossed in a dark pool around 10:30 a.m. ET, one of the largest Bitcoin ETF trades ever recorded.
2. Bitcoin and IBIT only moved roughly 1 to 3 percent around the trade, but IBIT still logged about $192 million in net redemptions amid a multi week ETF outflow streak.
3. The key question now is whether more of this block gets redeemed into Bitcoin sales, how long ETF outflows persist, and how macro stress shapes volatility around Bitcoins support levels.

Confidence: high, based on multiple independent reports.

Deep Dive

1. How The $1.3 Billion Trade Worked

Reports show almost 29 to 29.2 million IBIT shares traded off exchange in a single dark pool block at about $43.16 per share, totaling roughly $1.26 to $1.3 billion. Analysts like Alex Thorn and Eric Balchunas flagged it as one of the largest spot Bitcoin ETF block trades seen so far, with size equal to about one third of IBITs daily volume that session.[^1]

This was a secondary market transfer between investors, not necessarily a direct creation or redemption with BlackRock. Dark pools match large buyers and sellers privately, then print the trade later, which helps avoid slamming the public order book.[^2]

2. Price Impact And ETF Flow Signal

Despite the headline size, IBITs share price barely moved on the day and Bitcoin only dipped around 1 to 2 percent during the flow, before stabilizing near the mid 70,000s, showing the market could absorb the size without disorder.[^1][^2]

However, IBIT still saw around $192 million of net redemptions that day and US spot Bitcoin ETFs recorded roughly $334 million in net outflows for the week, following two earlier weeks with over $1 billion withdrawn each.[^2] Other coverage notes an eight day outflow streak and about 1.3 million BTC, roughly 7 percent of supply, still parked in US spot ETFs.[^3]

At the same time, total crypto market cap is down about 3 percent over 24 hours and the Fear and Greed Index sits in Fear, which fits a broader risk off environment rather than panic specific to this one trade.

3. What To Watch Next

The crucial unknown is whether more of this $1.3 billion block gets redeemed. If the buyer simply holds IBIT shares, underlying Bitcoin does not move. If future flow data shows redemptions closer to the full block size, BlackRock would need to sell additional BTC, which could add spot selling pressure.

Some analysis links the later drop below 73,000 to a mix of this ETF block sale plus geopolitical shocks, showing how ETF flows now interact with macro risk rather than drive the market alone.[^4]

Conclusion

A $1.3 billion IBIT block trade is a clear sign that Bitcoin can now change institutional hands in billion dollar chunks with only modest short term price impact. The real story is not the print itself, but whether it coincides with a sustained period of ETF outflows and macro risk that keeps Bitcoin in a choppy, supply heavy regime, or whether a new wave of demand steps in to absorb those shares over time.

[^1]: See the dark pool block description in this CryptoSlate piece. [^2]: Details on timing, dark pool execution, and flows appear in Decrypts IBIT block trade report. [^3]: Broader outflow and holdings context is summarized in this Yahoo Finance analysis. [^4]: The combined impact of the block sale and geopolitical tension is discussed in this CryptoPotato article.