DEX by DEX, part 2 — GMX & Gains: when a vault means becoming the house
On GMX and Gains Network, putting money in a vault doesn't mean following a trader — it means becoming the casino. Here's how the house model works, the risk inversion nobody warns you about, and how it compares to Hyperliquid's HLP.
In part 1 we looked at Drift, the rare venue where a vault means following a trader. Most aren't like that. On GMX and Gains Network — two of the biggest names in on-chain perps — depositing into a "vault" makes you the house. You're not riding a pro. You're the casino the players bet against.
How the house model works
GMX (on Arbitrum) pools depositor money into its liquidity pools (GLP, and the newer GM pools). That pool is the counterparty to every trader on the platform: when traders win, they're paid from the pool; when they lose, the pool keeps it; and the pool collects a slice of all trading fees. Gains Network (gTrade) runs the same idea more cleanly — single-asset gToken vaults like gUSDC, where liquidity providers are the counterparty and earn fees plus traders' net losses, without the impermanent loss of a mixed basket.
The risk inversion nobody mentions
Here's the mental flip that catches people. In a trader vault, you want the manager to win. In a house pool, you want the traders to lose (on net). Most of the time the house edge plus fees produces a steady yield — but a hot streak by traders, or a strong trending market, comes straight out of your deposit. And on GMX's GLP you also hold a basket of assets, so you carry directional price risk on top. It's a real, historically-positive yield — the same reason casinos are profitable — but it is not riskless, and it is the opposite of backing a skilled trader.
Does Hyperliquid have this?
Yes — and that's the key point. Hyperliquid's HLP is itself a house vault: it market-makes and liquidates, and depositors earn from platform activity, exactly like GLP or gUSDC. The difference is that Hyperliquid offers both models — the house pool (HLP) and follow-a-trader user vaults. GMX and Gains only offer the house. So if "be the casino" is what you want, you don't have to leave Hyperliquid to do it.
The verdict
House pools are a legitimate, more-passive way to earn — just be clear-eyed that you're the casino, not a follower of anyone's skill, and that your "steady" yield has a tail that bites when traders win big. If that's the exposure you want, compare GMX's GLP and Gains' gUSDC against Hyperliquid's HLP on yield and depth before deciding — and don't confuse any of them with the follow-a-trader vaults this blog usually reviews.
← Part 1: Drift | Part 3: dYdX MegaVault →
Nothing here is financial advice.