Hyperliquid's $78B Open Interest Is a Memecoin Story
The largest open interest positions on Hyperliquid are memecoins, not BTC or ETH. PUMP alone holds $39.9B in open interest, more than a thousand times BTC's. This concentration creates structural risk that every perps trader should understand.
On 10 October 2026, the total open interest across all perpetual futures on Hyperliquid stood at $78,284,703,854, according to the Hyperliquid API. That number sounds like a mature derivatives market. The composition tells a different story.
The divergence #
BTC and ETH dominate trading volume. The two assets together account for roughly 63% of all 24-hour notional volume on the venue. Open interest tells the opposite story. BTC carries $38,174 in open interest. ETH carries $1,120,395. Combined, they represent 0.0% of the total.
The largest open interest position is PUMP, a memecoin, at $39,919,999,980. That single market holds more open interest than the next nine assets combined. It is more than a thousand times BTC's open interest.
The top ten by open interest are PUMP, HMSTR, kPEPE, BOME, kBONK, MON, PENGU, DOGE, LINEA, and MEME. Nine of the ten are memecoins or low-liquidity tokens. The tenth, LINEA, is a layer-2 token with 3x maximum leverage and $1,051,128,498 in open interest.
Across the venue, memecoins account for $64,757,441,616 in open interest. That is 82.7% of the total.
Why this matters #
Open interest is the sum of all outstanding derivative contracts. It represents real capital at risk, not speculative attention. When 82.7% of that capital sits in memecoins, the venue's risk profile changes.
Memecoin order books are thin. A $10 million market order on PUMP moves the price more than a $10 million order on BTC. The Castle Labs study of live order books across 10 venues, published 1 October 2026, found that Hyperliquid held $54.5 million in resting size within 10 bps of the mid on BTC. On Solana, it held $4.7 million. On smaller assets, the depth drops further.
Thin books mean liquidations cascade faster. When a memecoin position is liquidated, the resulting market order pushes the price, which triggers the next liquidation, which pushes the price further. The cascade is not theoretical. It is a structural property of concentrated open interest in shallow markets.
The leverage multiplier #
Hyperliquid tiers maximum leverage by asset. BTC allows 40x. ETH allows 25x. PUMP allows 10x. HMSTR allows 3x. BOME allows 3x.
The leverage cap is not a suggestion. It is a hard limit on position size. A trader with $10,000 in collateral can control a $100,000 PUMP position. If PUMP moves 10% against them, the position is liquidated.
The leverage tier exists because the venue understands the risk. A 3x cap on HMSTR is the venue saying: this asset is too volatile for higher leverage. But 3x on an asset that can move 30% in a day still allows a full liquidation from a normal price swing.
The funding signal #
Funding rates on the largest open interest positions are elevated. PUMP's funding rate on 10 October 2026 was 0.0013% per hour, which annualises to roughly 11.4%. HMSTR's funding was the same. kPEPE's funding was the same.
That rate is not unusual for memecoins. It reflects the perpetual imbalance between longs and shorts. Most traders are long memecoins. The funding rate is the cost of holding that position. When funding is positive, longs pay shorts. When it is negative, shorts pay longs.
The most negative funding rate on the venue was MINA at -0.0341% per hour. The most positive was GRIFFAIN at 0.0137% per hour. These are not memecoins, but they illustrate the range of funding conditions across the venue.
What this means for traders #
First, understand where your capital sits. If you trade perps on Hyperliquid, the venue's risk profile is increasingly a memecoin risk profile. The liquidation cascades that affect PUMP will affect the venue's insurance fund, which affects every trader.
Second, respect the leverage cap. The venue sets maximum leverage for a reason. A 3x cap on HMSTR is not a limitation. It is a boundary the venue has drawn based on observed volatility. Trading at the maximum leverage on a 3x asset means a 33% move against you wipes out your position.
Third, watch open interest as a signal. When open interest concentrates in a small number of assets, the venue becomes more vulnerable to a single large liquidation. The $39.9B in PUMP open interest is not just a number. It is a measure of how much capital would need to exit in a disorderly way to destabilise the venue.
Fourth, use the data. The Hyperliquid API is open and free. The metaAndAssetCtxs endpoint returns open interest, funding, and volume for every asset. A trader can query it directly and see the concentration for themselves. JW3.ai integrates this data so you can see open interest alongside price and volume in the same interface.
The structural risk #
The concentration of open interest in memecoins is not a bug in Hyperliquid. It is a reflection of where speculative capital flows in crypto. Memecoins offer the asymmetric returns that traders seek. The venue lists them because there is demand.
But the concentration creates a feedback loop. More open interest in memecoins means more liquidation risk. More liquidation risk means the venue must hold more capital in its insurance fund. A larger insurance fund means the venue can list more memecoins, which attracts more open interest.
The loop breaks when a large liquidation cascade exhausts the insurance fund. That is the scenario every perps trader should understand. It is not a question of if, but when.
The $78 billion in open interest on Hyperliquid is real capital. The $39.9 billion of it in PUMP is real capital at risk. The 82.7% in memecoins is a measure of how concentrated that risk has become. Every trader on the venue should know these numbers before they open a position.
Cryptocurrency trading, leveraged perpetual futures, and automated algorithmic strategies carry significant risk of rapid and total financial loss. Never risk funds you cannot afford to lose completely.