October 10, 2025, will be remembered as one of the most brutal days in crypto history. Over $19 billion in positions were wiped out within hours, sending the total market cap collapsing by more than $400 billion. Bitcoin dropped 16% from $122K to $102K, while many altcoins and memecoins saw 50–90% crashes.

Mirrorly Traders that Gained From It#

While most traders (including many of the top performers we’ve tracked in recent months) were caught off guard, a select few managed to capitalize on the event. The top three Mirrorly traders, ranked by realized PnL from closed positions between October 6 and October 13 recorded total profits ranging from +$4.4 million to +$1.6 million (excluding fees and funding). Currently, 0x8bf and 0xbfc are sitting on unrealized losses of $254K and $401K respectively, while HummusXBT holds an unrealized gain of $684K.

Let’s take a closer look at the top 3 of this list.

Trader 0x8bf#

During the crash week, 0x8bf closed 36 positions, realizing a total profit of $4.4M. These included both longs and shorts, though the standout trade was a $HYPE short closed the day after the crash, netting $4.2M alone.

Currently, his portfolio runs at 2.5x leverage, with $19M in open positions against $7.5M in Perp Equity. His exposure is fully short-biased across $SOL, $HYPE, and $AVAX, with unrealized losses totaling $254K.

Trader 0xbfc#

Between October 6 and 12, trader 0xbfc closed 55 positions for a total realized profit of $3.7M. Like 0x8bf, his closed trades included both longs and shorts, with shorts contributing the bulk of his gains. The largest win came from a $SOL short opened in late September, yielding $502K on a $2.4M notional size.

Currently, his portfolio is running at 2.3x leverage, with $7.8M in open positions against a $3.5M Perp balance. His exposure is skewed to the short side, with 68% shorts and 32% longs. The most profitable open trades are three shorts initiated in the last week of September: $STBL (+$155K), $APEX (+$154K), and $HEMI (+$62K). However, most of his recent positions, opened after October 10, are underperforming, leaving him with total unrealized losses of $400K.

HummusXBT#

Finally, since Mirrorly enables users to track traders not only on Hyperliquid but also on other exchanges such as Binance  and Bybit, the third trader on our list is @hummusXBT, who is active on both platforms. Known for running a balanced long/short book, he was among the few who managed to profit from the October 10 market crash, recording a combined realized PnL of approximately $1.6 million across both exchanges.

During this period, he closed 42 positions, most of which had been opened before the drop. The most impressive trade was a long on $WLD, initiated just hours before the crash at 17:42 UTC when the token was trading around $1.17. 

As $WLD dropped to a low of $0.2625, HummusXBT increased his exposure and averaged down his entry to $0.388, bringing his total notional to just over $1.5 million. He eventually exited the position on the morning of October 11, realizing a $1.17 million profit.

As of now, his Binance portfolio holds $6.2 million in notional exposure, 80% allocated to longs and partially hedged with 39% shorts on $ETH and $SOL. He currently sits on $543K in unrealized gains.

On Bybit, he maintains a $1M long on $MNT, currently up $141K in UPnL.

Conclusion#

Making money in financial markets is difficult, and even more so in crypto, where volatility can erase months of gains in minutes. The October 10 liquidation event was a reminder of how unpredictable markets can be. Many of the top-performing traders of recent months were caught off guard and lost millions, some giving back nearly all their previous profits in a single day.

Yet, as the data shows, others benefited by being positioned differently. Market conditions constantly shift, and traders who excel in one environment may struggle in another. Mirrorly’s goal is to curate a diverse leaderboard of skilled traders with distinct strategies and risk profiles, giving users the opportunity to allocate capital across varying styles and remain better covered during extreme market events like this one.

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