Bitcoin (BTC) has once again come under significant selling pressure, dropping by more than US$15,000 within a week, from US$82,400 to US$65,856.

This sharp decline triggered massive liquidations across the derivatives market. Over the past 48 hours, more than US$2.41 billion worth of crypto positions were wiped out, including approximately US$93 million liquidated within a single hour. Most of these losses came from long traders who were caught on the wrong side of the market.

The latest Bitcoin downturn has been linked to three major developments affecting market sentiment.

1. BlackRock ETF Outflows

BlackRock’s Bitcoin ETF (IBIT), the largest Bitcoin ETF globally, recorded nine consecutive trading sessions of net outflows throughout May 2026. In total, around US$2.43 billion exited the fund during the month.

According to Bitcoin Archive, BlackRock’s IBIT experienced nine straight sessions of capital outflows, with approximately US$2.43 billion leaving the fund during May 2026.

One of the most notable transactions was a US$1.26 billion dark-pool sale executed on May 26.

A dark pool is a trading venue designed for large transactions that are not immediately visible to the public market. The transaction sparked speculation regarding the identity of the seller and the motivation behind the sale, although no official explanation has been provided. This activity suggests institutional selling pressure that has negatively influenced overall market sentiment.

2. Bitcoin Sale by Strategy

Strategy CEO Michael Saylor disclosed the company’s first Bitcoin sale since December 2022. The firm sold 32 BTC, valued at approximately US$2.5 million, to fund preferred stock dividend payments.

Although the amount sold represents only a tiny fraction of Strategy’s total holdings of 843,706 BTC, the symbolic significance of the move was substantial.

For years, the market viewed Strategy as an unlimited Bitcoin buyer. As a result, the sale introduced uncertainty and affected investor confidence.

3. Mt. Gox Wallet Activity

Mt. Gox, the Bitcoin exchange that collapsed in 2014, returned to the spotlight after transferring 10,422 BTC worth roughly US$739 million on June 2.

With creditor repayments scheduled through October 2026, every major wallet movement from Mt. Gox fuels speculation that creditors may soon liquidate their holdings. This expectation creates additional selling pressure on Bitcoin in the spot market.

Altcoins Are Showing Different Behavior

Despite Bitcoin’s sharp decline, altcoins have not followed the traditional pattern typically seen during major BTC selloffs. Historically, a 10% drop in Bitcoin often leads to declines of 20% to 40% among altcoins.

Recent data indicates that:

• Ethereum fell 5% but remains above US$1,824.
• Solana declined by 5.14%.
• BNB dropped 5.62%.
• Hyperliquid surged nearly 20% over the past week.

According to CoinPedia, Bitcoin is currently trading within 10% of its 200-week moving average while testing a strong monthly support zone. In addition, the daily RSI has fallen below 25, a level that has historically signaled the possibility of a short-term market bottom.

These conditions may create opportunities for altcoins to outperform and could potentially mark the beginning of an “altcoin summer.”

Conclusion

Bitcoin’s decline over the past week has been driven by a combination of institutional pressure, Strategy’s symbolic sale of BTC, and ongoing speculation surrounding Mt. Gox wallet movements.

At the same time, the relative stability of altcoins suggests that the cryptocurrency market continues to exhibit unique dynamics that investors may leverage for strategic opportunities.

Although volatility remains a significant risk, closely monitoring ETF flows, institutional wallet activity, and derivatives liquidations remains essential for understanding short-term market direction.

FAQ

Why can Bitcoin fall dramatically in a short period?
Bitcoin price declines are often caused by a combination of large-scale liquidations, institutional activity, and market psychology. ETF flows, corporate selling, and institutional wallet movements are frequently key catalysts.

What is a dark pool and how does it affect Bitcoin prices?
A dark pool is a private trading venue where large transactions occur without immediate public visibility. Significant sales executed through dark pools can create uncertainty and downward price pressure even when the seller’s identity remains unknown.

How does Strategy’s Bitcoin sale affect the market?
Strategy is widely recognized as a long-term Bitcoin accumulator. Therefore, even a relatively small sale carries symbolic importance because it challenges the perception that the company only buys Bitcoin.

What impact do Mt. Gox wallet movements have on Bitcoin?
Large transfers from Mt. Gox wallets often trigger speculation that creditors may sell their assets, increasing potential selling pressure across the market.

Why didn’t altcoins crash alongside Bitcoin?
Altcoins occasionally display weaker correlation with Bitcoin, especially when fresh accumulation occurs or investors seek diversification opportunities. This can allow altcoins to remain resilient even while BTC weakens.

Could this be the beginning of an altcoin summer?
When Bitcoin approaches a strong support level while altcoins remain relatively stable, the probability of an altcoin rally increases. However, elevated volatility remains a risk, requiring investors to stay cautious.

How can investors monitor short-term market pressure?
Tracking ETF flows, institutional wallet activity, and derivatives liquidation data can provide valuable insight into short-term pressure and directional trends within the Bitcoin market.