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Machi Big Brother, the Hyperliquid trader who reportedly grew $56,000 into $12.25 million in four months, has seen the account collapse to about $21,800, according to blockchain analytics firm Lookonchain. He then reportedly opened a new 25x leveraged Ethereum long, as Bitcoin fell below $81,000.
The reported losses mark a dramatic reversal for Machi Big Brother, whose trading performance had transformed a comparatively small starting balance into a multimillion-dollar account within months.
According to Lookonchain, the trader accumulated approximately $12.25 million from an initial investment of $56,000 over four months. That represents a substantial increase in account value, although the reported peak does not necessarily mean the trader withdrew or realised those gains.
The subsequent liquidation reduced the account balance to just $21,787.78. Compared with the reported peak, the remaining balance represents less than 0.2% of its former value.
The distinction between account value and realised profit is important in leveraged trading. An account can show substantial gains while positions remain open, but those gains can disappear when prices move against the trader. Until profits are realised or withdrawn, they remain exposed to market volatility.
Machi Big Brother traded perpetual futures on Hyperliquid, a decentralised trading platform that supports derivatives positions without a fixed expiry date. Such products allow traders to speculate on cryptocurrency prices using leverage, increasing both potential returns and potential losses.
The reported collapse illustrates the danger of relying on leveraged positions to sustain rapid account growth, particularly during periods of heightened volatility.
Machi Big Brother’s reported losses coincided with a broader cryptocurrency market downturn that pushed Bitcoin below $81,000 and brought Ethereum close to $2,380.
The decline followed a period of substantial liquidations across cryptocurrency derivatives markets. When leveraged positions move beyond the losses their collateral can support, exchanges may automatically close them to limit further exposure. During widespread selloffs, these forced closures can add to selling pressure and intensify price movements.
Crypto.news reported on October 14 that approximately $811 million in leveraged positions had been liquidated during another market shakeout. Open interest remained near $140.9 billion after that selloff, according to Bitget Research, indicating that substantial derivatives exposure remained in the market.
Bitcoin had also fallen below $82,000 following hotter-than-expected US inflation data. Annual inflation reportedly reached 3.7% in September, exceeding the market forecast of 3.6%.
The inflation figures added to uncertainty over the economic outlook and the potential direction of US monetary policy. Higher-than-expected inflation can influence expectations for interest rates, affecting demand for risk-sensitive assets such as cryptocurrencies. However, the available information does not establish inflation as the sole cause of the wider market decline.
Selling pressure had already intensified in the preceding week. Reports cited in the original account put cryptocurrency liquidations at approximately $1.09 billion in the 24 hours leading up to October 9, with long positions accounting for about $1.05 billion.
Ethereum also faced pressure from investment flows. US spot Ether exchange-traded funds recorded $542.2 million in weekly outflows during the week ending October 9, according to the figures cited in the report.
Together, these developments provide context for the difficult trading environment in which the Hyperliquid liquidation occurred.
Despite the reported account collapse, Machi Big Brother was said to have returned to the market shortly afterwards, opening another leveraged long position on Ethereum using 25x leverage.
A long position generally profits when the underlying asset rises in price and loses value when it falls. At 25x leverage, a trader can control a position worth roughly 25 times the margin committed, subject to the platform’s margin rules and other trading costs.
That leverage magnifies exposure to relatively small price movements. A 1% move in the underlying asset corresponds to roughly a 25% change in the position’s value before fees, funding payments and other adjustments, assuming the position size and margin remain unchanged. Liquidation can occur before a loss reaches the full initial margin, depending on the platform’s requirements and the trader’s account structure.
The reported decision to reopen an Ethereum long position therefore leaves the trader exposed to further volatility after an already severe loss. The available report does not independently establish the new position’s size, entry price or subsequent performance.
For traders watching the episode, the central lesson is the difference between building a large account balance and preserving capital through volatile market conditions. Rapid gains can attract attention, but leverage can also accelerate losses when market direction changes unexpectedly.
Machi Big Brother’s reported experience highlights how quickly a successful trading run can reverse when positions carry substantial exposure. With Bitcoin and Ethereum facing renewed selling pressure, the episode serves as a reminder that leverage can magnify market risk as readily as it amplifies potential returns.
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