Hyperliquid Open Interest Hit a Q3 Record of $18.1 Billion

Hyperliquid's perpetual futures open interest reached a record $18.1 billion on Sept. 22, and the platform closed the third quarter holding 11.7% of combined open interest across itself and eight centralized exchanges. The figures, drawn from on-platform market data, mark the strongest quarterly position growth the venue has posted this year.

Open interest stood at $16.7 billion on Sept. 30, roughly 80% above the $9.31 billion recorded on June 30. Average open interest for the quarter came in at $12.7 billion, a 46.4% increase from Q2. That pace of accumulation — adding nearly $7.4 billion in outstanding positions over three months — signals capital moving onto the venue at a rate practitioners cannot ignore.

The comparison set matters for interpretation. Hyperliquid's share of combined open interest across the platform and eight centralized exchanges rose from 9.6% at the end of June to 11.7% at the end of September. In plain terms, roughly one dollar in nine of outstanding derivatives positions across those venues now sits on a decentralized exchange rather than a centralized one.

Open interest counts contracts that remain open and includes both sides of those contracts. The measure shows the amount of outstanding positions but does not by itself indicate whether traders expect prices to rise or fall. A record figure therefore reflects balance-sheet commitment, not directional conviction.

What does the volume data show?

Matched trading volume totaled $730.6 billion in Q3, up 9.3% from the previous quarter but down 30.5% from a year earlier. The platform averaged 65,161 daily traders during the quarter, a 20% increase from Q2.

The divergence between the two trend lines is the analytical point. Positions grew sharply while turnover remained well below its year-earlier level, which suggests capital holding longer-dated exposure rather than churning intraday flow.

What happened to HIP-3 markets?

HIP-3 markets, which support perpetual futures tied to other asset classes, recorded $262 billion in Q3 volume. That was up 23% from Q2 and equal to 35.9% of Hyperliquid's matched volume.

The composition shifted within the quarter. HIP-3's share of the platform's perpetual activity declined from 51.1% in July to 24.5% in September as native-market volume rebounded 72% from its July low. Activity migrated back toward Hyperliquid's native perpetual contracts over the quarter's back half, even as the broader asset-class markets continued to grow in absolute terms.

For market makers and liquidity providers, that shift changes where the flow is. Half the venue's activity ran through HIP-3 venues in July; barely a quarter did by September. Capital that calibrated spreads and inventory for builder-coded markets had to reweight toward native markets as the quarter progressed.

For derivatives desks more broadly, the question is what an 11.7% share changes. It changes the calculus for venue selection, collateral efficiency and execution benchmarks: a decentralized venue now carries a double-digit share of outstanding positions in a comparison set that includes eight major centralized exchanges. Infrastructure that was marginal to institutional flow two quarters ago is now a line item in market-structure analysis.

The forward question is whether the Q3 rate of position growth holds. A repeat of the quarter's roughly 80% end-to-end gain in open interest would push the venue's combined share materially higher into year-end, while the 30.5% year-over-year decline in matched volume remains the metric to watch for whether the position build translates into sustained trading activity.