Hyperliquid Open Interest Record Tops $18B, Driven by HIP-3

The Hyperliquid open interest record cleared $18 billion on September 23, 2026, marking the platform’s third all-time high in under a week for outstanding derivatives positions. Data cited by Lookonchain confirmed the figure surpassed the previous peak of $16.36 billion set on September 19, itself a record that had just overtaken the high from September 18, 2025. Outstanding positions have climbed roughly $5 billion since late August, when Hyperliquid was processing around $220 billion in perpetual trading volume per month.

Hyperliquid Open Interest Record Breaks $18 Billion

How Does Bilateral Open Interest Work?

According to Hyperliquid open interest record $18 billion data tracked by HyperIntel on September 23, the figure is bilateral, it counts the combined notional value of both long and short positions active on the platform. Bilateral counting is the stricter measure: both sides of every trade are included, which means the $18 billion is not a function of one-sided positioning. Reaching that level requires broad, sustained demand from traders on multiple sides of each market.

$5 billion. That is how much outstanding positions have grown since the end of August 2026, when DefiLlama Research measured Hyperliquid open interest above $13 billion alongside roughly $220 billion in monthly perpetual volume. Three weeks of trading. A roughly 38% increase. On a live platform handling hundreds of billions in monthly volume, that kind of growth rate does not happen passively, it means capital is actively choosing Hyperliquid over other venues.

The breakdown by asset reflects the platform’s growing breadth. Bitcoin leads at $4.05 billion in open interest, with Ether behind at $3.18 billion and native token HYPE at $2.10 billion, which tells you something about how much capital is positioned around the protocol itself. Zcash sits at roughly $858.6 million and Solana at approximately $763.7 million. These are not thin markets.

What Is Driving the Hyperliquid Open Interest Record?

Hyperliquid’s open interest record is being driven by expanded asset coverage under the HIP-3 framework, growing non-crypto perpetual markets, and product improvements including trailing stops launched on September 21, 2026. Rising demand for perpetual contracts tied to equities, commodities, and event outcomes has pulled capital alongside existing crypto activity.

Non-crypto perpetuals have built real depth. An S&P 500-linked perpetual carried roughly $418.9 million in open interest as of September 23, while gold stood near $301.7 million. Neither figure would look out of place on a traditional futures board. These markets barely existed on Hyperliquid a year ago, the speed of adoption across non-crypto instruments is arguably the more consequential story behind the $18 billion headline.

The trailing stop rollout on September 21 is smaller news on the surface. But order type improvements compound over time. Professional traders care deeply about execution tools, trailing stops let long positions follow the highest mark price after activation and short positions track the lowest before triggering, and that kind of feature pulls accounts that would otherwise stay on centralized venues.

HIP-4 is still in its early innings. Third-party deployment only opened at the end of August 2026, giving event contracts barely three weeks to accumulate positions before this latest open interest reading. If prediction markets on Hyperliquid follow the adoption curve HIP-3 has traced, the current $18 billion figure could look modest in retrospect.

HIP-3 Clears $548 Billion in Cumulative Volume

By early September 2026, Hyperliquid HIP-3 $548 billion cumulative volume had crossed that threshold since the framework launched in October 2025, less than a year of operation. HIP-3 markets accounted for roughly 30% of Hyperliquid’s total trading volume over the preceding 30 days, according to data cited by Lookonchain. Almost a third of the entire platform’s activity now comes from markets that did not exist before last October. That is a product pivot working in real time.

The framework lets developers stake HYPE tokens and deploy perpetual markets on Hyperliquid’s HyperCore infrastructure. Deployers control the oracle used to source prices and set their own use parameters, the market structure is theirs to configure within the platform’s rules. Assets available through HIP-3 now include US equities, major stock indices, gold, crude oil, and private company pre-IPO contracts. SpaceX is among the names represented through those instruments.

TradeXYZ, one of the more active HIP-3 participants, recorded $202.36 billion in trading volume during the second quarter of 2026, up from $112.93 billion the quarter before. Equity perpetual volume reached $58.9 billion across 55 markets, with open interest at $2.96 billion at the end of June. Those are not experimental numbers. A $202 billion-per-quarter venue built on permissionless infrastructure is a proof-of-concept that has already grown into something real.

Hyperliquid has also introduced optional permissioned markets for HIP-3 on testnet, giving deployers the ability to limit access through onchain allowlists. Existing permissionless markets are unaffected, the upgrade adds institutional optionality without dismantling the open architecture that attracted developers in the first place. That design choice is not accidental. It is preparation.

Native lending has arrived alongside the derivatives expansion. Users can now borrow USDC and USDT against supported collateral, which keeps assets working within the Hyperliquid environment rather than moving off-platform. Each product layer deepens the capital pool that ultimately drives open interest.

Could US-Regulated Hyperliquid Perpetuals Come Next?

The most structurally significant development around Hyperliquid’s expansion may not involve a trading volume number. A statement covering Payward Bitnomial Hyperliquid US regulated perpetual futures confirmed that Bitnomial would deploy and administer proposed HIP-3 perpetual markets for eligible US clients through Kraken’s parent company Payward, subject to regulatory approval.

Under the proposed structure, Bitnomial Exchange would serve as the HIP-3 deployer, Bitnomial Clearinghouse would handle clearing and settlement, and NinjaTrader Clearing would carry approved customer accounts. Access would be provided through permissioned HIP-3 markets designed to operate under US derivatives rules. The structure mirrors the onchain allowlist system Hyperliquid already supports on testnet, the regulatory gateway, if approved, plugs into existing infrastructure rather than requiring a separate build.

Hyperliquid has spent years building a trading venue that operates without traditional intermediaries. Now the intermediaries want in, on its terms, using its rails. Whether the platform’s open interest record keeps climbing once US compliance layers start wrapping around it is the more interesting question.

This article is for informational purposes only and does not constitute investment advice. Every investment and trading decision involves risk. Readers should conduct their own research before making any financial decisions.