Hyperliquid’s daily HIP-4 outcome-market volume almost tripled within three days of the protocol opening deployment to outside venues on 29 August, according to research published on 3 September.
Reported daily volume rose from an August average of about $545,000 to $1.97m on 31 August, before the trailing daily figure reached approximately $2.75m, according to the Hyperliquid Research Collective.
The early growth was led overwhelmingly by Outcome, which accounted for about 85% of HIP-4 volume. The venue launched a $1m rebate programme offering traders roughly one cent for every dollar traded.
A second outside venue, Skew, generated about 1% of the reported activity. The remaining volume came from markets deployed by Hyperliquid validators.
Both Outcome and Skew posted 500,000 HYPE bonds to gain access to HIP-4’s deployment system. The bonds must remain in place for at least six months and can be slashed if validators decide that an operator created an invalid market, settled it incorrectly or failed to settle within the permitted period.
The 29 August upgrade made market deployment permissionless at protocol level, although operators must still use one of seven templates approved by Hyperliquid validators. Builders can launch markets that comply with those formats without obtaining separate approval for every individual contract.
That distinction leaves outside operators responsible for individual listings, while validators retain control over the categories and settlement structures supported by the network.
How HIP-4 works
HIP-4 provides fully collateralised outcome contracts, which generally settle at zero or one when a specified event occurs or does not occur. Prices are intended to reflect the market’s assessment of the likelihood of an outcome.
Unlike perpetual futures, the contracts do not use leverage, funding payments or liquidations. Traders must supply the full collateral required for their positions.
The first HIP-4 products reached mainnet in May, alongside Hyperliquid’s builder-deployed perpetual markets, but were initially controlled by validators and selected operators. Hyperliquid had announced plans to allow permissionless deployment in July, with outside builders expected to commit substantial HYPE holdings and face potential slashing.
The 500,000 HYPE requirement provides an economic penalty for misconduct, but also represents a significant barrier to entry. Direct deployment is therefore largely limited to operators that control or can borrow sizeable HYPE positions.
The research found no verified evidence that the permissionless launch alone produced a distinct change in the price of HYPE. The token’s value is also affected by wider cryptocurrency-market conditions and other activity on Hyperliquid.
Rebates behind early increase
The concentration of activity in Outcome means the initial rise cannot yet be regarded as proof of lasting demand for HIP-4 markets.
Rebate schemes can encourage users to trade more frequently or complete transactions that would not otherwise be attractive. Although the volume represents genuine trading activity, its durability will become clearer once the incentives are reduced or withdrawn.
The early figures also provide a test of whether HIP-4’s permissionless model can develop into a broader competitive market. Two external operators have posted bonds, but one currently controls most of the new activity. More builders, market templates and sources of liquidity would be needed to establish greater competition.
HIP-4 contracts use settlement prices published by Hyperliquid validators every three seconds, according to the collective’s analysis. Positions operate within the same account environment as Hyperliquid’s perpetual markets.
That structure could allow traders to hedge a binary outcome contract with a perpetual contract linked to the same mark price. For example, a contract paying $1 if Bitcoin closes above a specified level could be paired with a Bitcoin perpetual position. Both instruments would respond to a common Hyperliquid mark rather than separate indexes or settlement times.
The arrangement may reduce basis differences between the two instruments, but it does not remove liquidity, execution or settlement risks. It also places significant operational responsibility on Hyperliquid’s validators and trading systems.
The collective said Kalshi and Polymarket cannot offer an identical hedge because their event contracts do not share Hyperliquid’s perpetual account and mark-price system. That is a comparison of technical market structure, rather than liquidity, regulatory protection or overall platform risk.
Kalshi operates as a regulated US designated contract market, while Polymarket uses blockchain settlement and external resolution systems. Hyperliquid keeps matching, collateral and validator-directed settlement within its own network.
US access remains unresolved
Permissionless deployment does not automatically give HIP-4 operators permission to serve US customers or offer every type of event contract.
The current templates reportedly do not cover sports, elections or other markets commonly involved in federal disputes over event contracts. Existing listings instead focus on prices, economic data and other objectively measurable outcomes.
Avoiding sports markets would not, by itself, make HIP-4 lawful for US users. A platform offering commodity derivatives to people in the United States would generally need an appropriate regulatory framework, even if its software allows permissionless deployment.
The Commodity Exchange Act permits registered entities to submit new contracts to the Commodity Futures Trading Commission (CFTC). Federal law also allows the CFTC to review event contracts involving gaming, terrorism, assassination, war, unlawful activity or similar subjects considered contrary to the public interest.
CFTC rules provide a review process for contracts involving those categories, and the regulator can request a trading suspension during a 90-day review before accepting or rejecting a contract.
Sports markets could therefore bring an additional legal issue. The research collective found that sport accounted for 91% of HIP-4’s largest historical trading session. Introducing third-party sports markets could increase demand, but might also lead to closer examination under the gaming provision.
The collective described regulatory “permission” as the remaining constraint. However, no regulator has confirmed that registration alone would authorise every HIP-4 structure or market category.
The legal position could also depend on which party operates the interface, controls market parameters, receives fees and makes the platform available to US users. Hyperliquid’s decentralised architecture does not automatically resolve those questions.
The next major test will be whether volume stays above the August average after Outcome’s rebate campaign ends. Activity will also need to spread beyond one operator if the rollout is to demonstrate durable competition.
Further builders may enter after posting the required HYPE bonds, while Hyperliquid validators could approve more templates covering a wider range of economic, cryptocurrency and financial outcomes.
Any operator seeking US customers would need a separate compliance route and would have to establish whether its contracts require CFTC registration, submission or other authorisation. Sports markets would face an additional question because federal law specifically identifies gaming as an event-contract category that may be examined under the public-interest standard.
