$16.7B Whale Buying Spree Offsets Record ETF Outflows in Bitcoin Market

June marked the weakest month ever for U.S. institutional bitcoin demand, even as large holders stepped in to absorb the selling—an imbalance that has historically appeared near major market bottoms.

Whales accumulated more than 270,000 bitcoin (BTC), worth about $16.7 billion, over the past two weeks, while U.S. institutions exited positions at record levels.

At the same time, U.S. spot bitcoin ETFs recorded $4.06 billion in outflows in June, their worst month since launch and higher than the previous record of $3.56 billion set in February 2025.

Those redemptions pushed ETF flows into negative territory for 2026 for the first time, though the funds still posted a modest $221 million inflow on Thursday.

Bitfinex analysts said large wallet holders moved in the opposite direction, accumulating over 270,000 BTC during the same two-week period. This came while the spot premium stayed negative, indicating that buying pressure was not primarily coming from U.S. spot trading desks.

The divergence between institutional selling and whale accumulation is a pattern often seen near cycle lows, where long-term holders absorb supply ahead of a broader recovery.

Among major assets, Solana has been a standout. SOL has climbed roughly 15% since early June, even as bitcoin briefly touched 21-month lows, supported by protocol upgrades and a surge in on-chain activity tied to tokenized real-world assets, which rose 120% to $8.53 billion.

Bitfinex analysts described the split as a “familiar pattern,” noting that altcoins typically decline earlier in downturns but also tend to recover earlier in the cycle.

However, not all altcoins are following the same trend. Optimism and other Ethereum layer-2 tokens remain near record lows after Base, Coinbase’s network, shifted away from Optimism’s shared technology, removing a key revenue driver.

Looking ahead, markets are focused on upcoming inflation data as the next key macro catalyst. May inflation printed at 4.2%, but recent comments from Warsh at the ECB’s Sintra forum suggesting easing inflation pressures have already supported risk assets. A softer reading could further reshape expectations for Federal Reserve policy, which has weighed on bitcoin throughout the month ahead of the next FOMC meeting.