Major Trader Maintains $38M Bitcoin Short on Hyperliquid — Should Markets Take Notice?
An institutional whale on Hyperliquid maintains substantial short positions targeting Bitcoin and multiple altcoins. Can this positioning offer insights into where crypto markets are headed next?
Key takeaways:
- An institutional whale believed to be connected with Fasanara Capital maintains a $38 million short position across crypto assets, raising questions about potential Bitcoin price impact.
- Unusual bearish positioning demand is evidenced by negative futures funding rates on Binance and Bybit, despite BTC's recent upward momentum.
On Friday, Bitcoin (BTC) encountered difficulty maintaining price levels above $78,000, though the broader technical configuration continues to favor bulls. Since reaching its yearly bottom of $60,100 on Feb. 6, BTC has surged 29%, with numerous market analysts suggesting a potential long-term breakout is imminent. Meanwhile, on the Hyperliquid exchange, a bearish Bitcoin whale continues to hold a substantial short position. This particular whale has accumulated $159 million in trading profits throughout the last seven months. The question remains: does this whale's market positioning offer meaningful insights that traders should heed?
The trading entity operating under address 0x7fda…c517d1 (alternatively identified as BobbyBigSize) on the Hyperliquid exchange demonstrated exceptional performance during the market downturn spanning October through November 2025 through leveraged short positions on Ether (ETH), Hyperliquid (HYPE), Avalanche (AVAX), and Fartcoin, alongside other digital assets. This account has struggled to preserve its accumulated profits, recording a $561,000 decline within the last 30-day period.
Whale demonstrates ETH optimism while shorting BTC and alternative coins
Through algorithmic trading methodologies, this whale has previously initiated short-duration long positions across Bitcoin and Solana (SOL), generating an impressive $11 billion in total trading volume on the Hyperliquid exchange. At present, BobbyBigSize maintains $19.4 million in deposited assets on the platform. With 63% of executed trades yielding positive returns, this performance metric is regarded as remarkably successful.
At this time, BobbyBigSize maintains a $38 million short position targeting BTC alongside numerous altcoins. Additionally, the trader established a $21 million leveraged long position in ETH during the previous week, demonstrating near-term bullish conviction. Overall, the portfolio's positioning skews bearish, implying anticipation of an approaching short-term market correction.
Data from Hyperdash indicates that BobbyBigSize's average trade duration has been marginally above two weeks, whereas the median position tenure has remained below four days. Arkham data has previously established a connection between this address and Fasanara Capital, an institutional asset management firm based in London. Reports suggest the company oversees assets exceeding $5 billion.
Per Fasanara Digital's official website, the division commenced operations in 2018 and currently oversees $400 million distributed between market-neutral strategies and venture capital investments. Simultaneously, a quantitative multi-manager methodology across diverse liquid markets administers $150 million. That said, the fund's specific strategic approach toward cryptocurrency investments remains somewhat ambiguous based on available information.
On Hyperliquid, funding rates for BTC and ETH registered marginally positive, reflecting modest demand for leveraged long positions. In neutral market conditions, long position holders typically pay between 6% to 12% in annualized rates to sustain their positions. Presently, funding rates have turned negative on both Binance and Bybit, suggesting abnormally elevated demand for bearish leverage positioning.
Algorithmic trading entities exhibit erratic and unpredictable behavior patterns, with the recent losses sustained by "BobbyBigSize" during the past several months serving as evidence that no individual trading methodology remains effective indefinitely. Nevertheless, this whale's bearish positioning corresponds with elevated demand for leveraged short positions across exchanges; consequently, Bitcoin traders would be prudent not to dismiss the potential for a price retest of the $75,000 support level.