Glamsterdam reached Sepolia on October 6: What it means for the Ethereum price

Published on 10/21/2026 at 13:00 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Hoodi is scheduled for October 26 at 17:42:48 UTC. The Ethereum price is 2,439.13 USD as of October 21, 2026, up 1.87 percent.

Ethereum upgrade and ETF flows

On October 6, 2026, Glamsterdam activated on Ethereum's Sepolia testnet as its first public network trial.
Spot Ether ETFs recorded 26.13 million USD in net outflows on October 20, 2026.
The Ethereum price stands at 2,439.13 USD as of October 21, 2026, 1.87 percent above the UTC daily close of October 20, 2026.
The upgrade combines ePBS with block-level access lists under EIP-7732 and EIP-7928.

Ethereum, XCCRYPTOETH3, Illustration mit AI erstellt.

Ethereum (ETH) completed the Sepolia testnet activation of the Glamsterdam upgrade on October 6, 2026, marking the first public network trial for a package of protocol changes. The Ethereum Foundation describes the upgrade as a step toward higher Layer 1 capacity through changes to block production, access lists and gas pricing. The Ethereum price stands at 2,439.13 USD as of October 21, 2026, up 1.87 percent compared with the UTC daily close of October 20, 2026, according to Investing.com.

Glamsterdam tests 200 million gas on Sepolia

Glamsterdam combines enshrined proposer-builder separation, which places the handoff between block proposers and block builders in Ethereum's protocol, with block-level access lists that identify the account and storage locations a block will use. The Ethereum.org roadmap lists October 6, 2026, as the Sepolia milestone for the upgrade.

The Ethereum Foundation also scheduled the Hoodi testnet activation for October 26, 2026, at 17:42:48 UTC, with the gas limit set to 200 million at the same epoch. A gas limit caps the computational work that can fit into one block. The Foundation said the mainnet activation date remains undecided, separating the testnet schedule from a production-network launch.

Ether ETFs lose 26.13 million USD on October 20

U.S. spot Ether ETFs recorded 26.13 million USD in net outflows on October 20, 2026, extending the withdrawal streak to five sessions, according to TokenPost, citing SoSoValue data. BlackRock's ETHA accounted for 33.02 million USD of outflows, while Fidelity's FETH and Grayscale's ETH recorded inflows of 3.63 million USD and 3.25 million USD, respectively.

The same report put total net assets in the spot Ether ETF group at 14.98 billion USD on October 20, 2026. ETF flow figures track net creations and redemptions of fund shares, while the network upgrade concerns Ethereum's software and testnet operations. These are separate measurements of ETH market activity and protocol development.

Market data on October 21, 2026

According to Investing.com, ETH trades at 2,439.13 USD as of October 21, 2026, up 1.87 percent compared with the UTC daily close of October 20, 2026. The daily high is 2,477.00 USD and the daily low is 2,375.26 USD. Market capitalization is 297.09 billion USD, ranking ETH second, while 24-hour volume is 10.13 billion USD. Circulating supply is 122.15 million ETH.