Open Interest on Hyperliquid has reached levels not seen in nearly eleven months. Data from DefiLlama shows that OI crossed the $14 billion mark on September 4 and now reads at $14.669 billion.
Open interest on the platform bottomed in February this year at around $4.76 billion. That is around a 210% growth in OI over the past seven months. What is also notable is the fact that there wasn’t a period that saw rapid growth as well. When looking at the chart, the growth has been gradual ever since March, indicating that this climb up is structurally different from the quick leverage buildup in October last year.
Coinbase Routing, A CFTC Comment and an $820 Million Unlock
Over the course of the last month there have been separate events that have been beneficial for the plaftorm. On August 19th, Coinbase announced that its Base app would use Hyperliquid-powered perpetual futures, giving users access to 290+ perp markets across crypto, commodities and equities. This effectively opened a massive distribution channel for the platform. Then, a day later, President Trump brought the regulatory debate into focus when he said that the CFTC is actively working on bringing Hyperliquid onshore.
After this was a test on September 6, when 9.92 million $HYPE was unlocked, worth roughly $820 million. This was the one event here that could have wobbled the open interest climb but the market did not budge and OI printed its local high the very next day.
HIP-3 Built the First Leg, Core Perps are Building This One
When we break down what’s driving the open interest within Hyperliquid, the composition here has shifted over the past month as well. Builder-deployed HIP-3 markets carried the open interest growth earlier in the year, growing from 18% of total OI on the platform to more than 34% in August and crossing $4 billion. The trend here has now changed. Total OI added $3.80 billion this past month while data from hyperscreener shows that HIP-3 declined by around $200 million.
That shift changes what the growth is worth. Core markets route about 99% of fees into $HYPE buybacks. Builder markets let deployers keep up to half of what they generate. Growth on the core side feeds the token more directly, and the core side is where the last month of size went.
Hyperliquid now holds about 76% of perp DEX open interest
Artemis data from September 8 puts total open interest across tracked perp DEXs at $19.2 billion, with Hyperliquid at $14.6 billion of it. Aster sits at $2.5 billion, Lighter at $1.1 billion and edgeX at $598.6 million. Everything else on the list is under $210 million.
That spread is the real story here. Through late 2025 the stacked chart looked genuinely competitive, with challengers taking meaningful share during the October peak. A year on, the field has consolidated and Hyperliquid has taken roughly three quarters of it. The size showing up now is size that used to sit on centralized venues.
What the Number Does Not Say
Open interest is the notional value of open positions. It is not capital coming into the platform and it does not point in a direction. A $14.7 billion book can be built by longs, shorts or a balanced mix of both, and higher OI means more positions available to liquidate if price moves hard. October 2025 demonstrated exactly that.
What it does measure is where traders are willing to leave size sitting. On that count, the answer has changed.
