Fasanara Capital, a London-based quantitative asset manager, is holding a roughly $67 million ETH short on Hyperliquid through an on-chain wallet labeled "BobbyBigSize" and linked to the firm by Arkham Intelligence and Nansen. The position sits on a fully on-chain perpetuals venue, visible through Hyperliquid's on-chain explorer at 0x7fda..17d1, alongside additional ETH and cross-asset exposure that brings reported Hyperliquid activity attributed to the fund past $11 billion in cumulative trading volume.
The instinctive read, that a large ETH short is a bearish directional call, does not survive how systematic funds actually operate. A short of this size can be a hedge against spot ETH holdings, an offset against an options book, one leg of a basis trade, or part of a market-neutral spread. Fasanara runs multi-strategy books where funding, basis, and volatility relationships matter more than a clean up-or-down call on Ether, and the firm reportedly holds a concurrent BTC long opened near $75,950 alongside shorts in TON, AVAX, and DOGE.
Why it matters
The trade matters less for its direction than for its venue. A fund managing multi-billion-dollar mandates is comfortable running nine-figure notional exposure natively on a decentralized perpetuals book, executing a cross-asset relative-value strategy in full public view. Hyperliquid's order book depth, matching speed, and familiar perpetuals interface have closed the execution gap with centralized exchanges far enough that institutional derivatives flow is now routing on-chain rather than treating DeFi venues as peripheral experiments.
Market impact
That shift creates a new class of market signal. Centralized exchange positioning has historically been inferred indirectly through funding, open interest, and exchange-reported metrics; on Hyperliquid, wallet-level positioning is directly observable. Analysts can watch when Fasanara adds or trims, monitor collateral changes, and read the wallet as a live institutional tape, transparency at scale is exactly what decentralized finance was supposed to produce, and it is now arriving through a venue most serious traders take seriously.
Frequently asked questions
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Who is holding the $67M ETH short on Hyperliquid?
Fasanara Capital, a London-based quantitative asset manager, is linked by Arkham Intelligence and Nansen to the on-chain wallet "BobbyBigSize" (0x7fda..17d1) holding the short.
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Is a $67M ETH short on Hyperliquid bearish for Ethereum?
Not necessarily. Systematic funds use shorts as hedges, basis-trade legs, or offsets against options books. The same wallet reportedly carries a BTC long and shorts in TON, AVAX, and DOGE, a cross-asset relative-value book, not a clean directional bet.
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Why is Hyperliquid attracting institutional capital?
Hyperliquid offers centralized-exchange-grade order book depth, matching speed, and a familiar perpetuals interface on-chain. That execution quality is what has drawn serious derivatives flow away from treating DeFi venues as peripheral.
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Can traders watch Fasanara's position move in real time?
Yes. The position sits on Hyperliquid's on-chain explorer at 0x7fda..17d1, so any adds, trims, or collateral changes are visible directly, unlike centralized exchange positioning, which is inferred from funding, open interest, and reported metrics.
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How large is Fasanara's reported Hyperliquid activity?
Attribution from Arkham-backed sources puts cumulative Hyperliquid trading tied to the firm across ETH, BTC, AVAX, HYPE, and other tokens at roughly $11 billion, a profile consistent with a high-frequency systematic book.
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