Hyperliquid Open Interest Hits $18B, Four Days After $16.36B

Open interest on Hyperliquid reached $18 billion on Wednesday, a record for the decentralized venue. Open interest is the value of positions still held, and a perpetual future is a futures contract with no expiry date. The previous high was $16.36 billion, set on Saturday. Five outlets carried Wednesday's figure and all five agree, which is less reassuring than it sounds: all five are relaying the same announcement from Hyperliquid. The fastest-growing part of the venue has no crypto in it at all.

Where the positions sit

crypto.news published the fullest breakdown on Wednesday morning and puts bitcoin at about $4.05 billion of the total, ether at about $3.18 billion and HYPE, the venue's own token, at roughly $2.10 billion. Those three come to $9.33 billion, a little over half. The non-crypto markets are smaller but no longer marginal: S&P 500 perpetuals hold about $418.9 million and gold about $301.7 million. No other outlet published a breakdown. The split rests on one report.

Markets built by outsiders

The growth traces to HIP-3, the framework that lets a third party deploy its own perpetual market on Hyperliquid's execution layer, covering equities, commodities, indices and private companies. crypto.news dates it to October 2025 and CoinGecko's explainer puts the mainnet activation at 13 October 2025, which is the same event told two ways. A deployer has to stake 500,000 HYPE as a bond. CoinGecko valued that near $25 million at the prices it used, on a date it does not give.

How much of the venue's volume those markets take is where the accounts split. crypto.news says about 30% on a 30-day basis, with cumulative HIP-3 volume above $548 billion by early September. CoinGecko's explainer says over 35%, and adds that 23 of the 30 busiest pairs are tokenized stocks or commodities. Neither states a cut-off date, and the two figures do not reconcile. The pull toward equities shows up elsewhere in the market, most recently when Coinbase filed for more than 50 single-stock perpetuals with the CFTC.

One number, two ways to count it

A KuCoin flash on Wednesday adds something none of the other reports mention. It says Hyperliquid clarified that the $18 billion is two-sided open interest, meaning every long and every short added together, and that the single-sided figure sits nearer $9 billion. Counting both sides is ordinary practice on derivatives venues and is not a trick. It does double the headline. crypto.news, Crypto Briefing, PANews and Phemex all carried $18 billion with no note on method, and we could not establish which convention the per-asset breakdown uses. That is not a small gap: bitcoin's $4.05 billion reads very differently against a $9 billion base than against an $18 billion one.

Growth without a stated cause

Outstanding positions stood above $13 billion at the end of August, so roughly $5 billion has been added in three weeks, on crypto.news's numbers. Hyperliquid also reported about 283,200 daily active users on Monday, another record; PANews and Phemex both carried it and both trace to the same post, so that is one source counted twice. Nothing published on Wednesday says how much of the $18 billion is leverage and how much is hedging, or how much of it sits with a handful of HIP-3 deployers. Positions on the venue have drawn official attention before, as they did when two former Robinhood engineers were charged over Hyperliquid trades earlier this month. The announcement answers neither question.