Ethereum Glamsterdam Upgrade Fuels DeFi Perps Momentum in September 2026

Summary

• Glamsterdam upgrade targets improved user experience and data handling on Ethereum.
• Hyperliquid records over $180 billion in 30-day perpetuals volume.
• Fusaka upgrade introduces measures to stabilize blob fees amid scaling efforts.

Ethereum launches its Glamsterdam Sepolia testnet on October 6. This timing coincides with sharp volume gains for DeFi perps platforms in September 2026. Hyperliquid cleared more than $180 billion in 30-day perpetuals volume alone.

The upgrades tackle old limits on scalability and user experience. Glamsterdam improves data discoverability and supports larger messages to avoid sync issues. Fusaka sets a floor on blob base fees tied to the L1 base fee.

Context

Ethereum rolls out upgrades to handle rising demand from on-chain apps. Glamsterdam refines transaction handling and data access. These changes arrive as derivatives trading moves to efficient on-chain venues.

Hyperliquid holds the largest share of on-chain perpetuals volume. Its independent L1 design limits direct effects from ethereum upgrades. Broader ecosystem momentum still supports platform expansion.

Details

Glamsterdam targets three main areas. It refines user experience, boosts data discoverability, and prevents sync failures from growing message sizes. Fusaka stops blob prices from collapsing by linking a lower bound on the blob base fee to a fraction of the L1 base fee. These steps improve cost predictability for data-heavy applications.

Hyperliquid leads on-chain perpetuals activity. Its 30-day volume topped $180 billion recently. The platform dominates even as other ethereum-linked DeFi perps venues chase similar traction.

"Glamsterdam aims to improve the user experience, enhance data discoverability, and handle rising message sizes to prevent sync failures."

, ethereum.org (https://ethereum.org/roadmap/glamsterdam/)

Outlook

The Glamsterdam testnet on October 6 gives developers and operators their next checkpoint. They validate changes before mainnet deployment. Observers will track how these adjustments affect fee stability and throughput for DeFi perps activity across the ethereum stack.