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Ether funds see $129.4M outflows ahead of Ethereum's Glamsterdam upgrade testnet activation

Reported by Pluang
Oct 21, 2026· 2 min read
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Key Takeaways
  • • U.S. spot Ether (ETH) funds recorded $129.4 million in net outflows over October 19-20, 2026, extending a prior-week outflow streak of $320.1 million.
  • • The withdrawals precede the scheduled activation of the Glamsterdam upgrade on the Hoodi testnet on October 26, 2026; no mainnet date has been set.
  • • Glamsterdam is designed to change block building and validation processes on Ethereum.
  • • Investors are positioning ahead of the Federal Reserve's October 27-28 policy meeting for further market direction.
Summary
U.S. spot Ether funds experienced $129.4 million in net withdrawals over October 19-20, 2026, according to the source article, continuing a trend from the previous week in which outflows totaled $320.1 million. The two-day figure points to sustained institutional selling pressure on ETH exposure heading into a period of protocol and macro catalysts.

The outflows coincide with the scheduled activation of Ethereum's Glamsterdam upgrade on the Hoodi testnet on October 26, 2026. The upgrade aims to change block building and validation processes within the network. The article notes that no date has been set for mainnet activation, meaning the testnet milestone does not yet signal a production rollout timeline.

Macro conditions are also in focus. Market participants are watching the Federal Reserve's policy meeting scheduled for October 27-28, 2026, for guidance that could influence risk appetite across crypto assets.

The source article, published via Pluang, also provided a market snapshot as of October 22, 2026, at 03:51 WIB. Of 50 priced major cryptocurrencies tracked, 41 rose and 8 fell. Notable movers included CRV, up 4.77% over one day, FIL, up 4.60%, and ONE, up 4.00%. These figures reflect short-term price moves and are not a basis for assessing ETH fund flows.

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Sources

1 outlet

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Pluang Ether funds see $129.4M outflows ahead of Ethereum's Glamsterdam upgrade testnet activation