Ethereum and Solana: Recent Gains and Upcoming Changes In September

Ethereum (ETH) and Solana (SOL) both rose last week, up 10.2% and 15.5% respectively, but are still down year-to-date. Solana's Alpenglow upgrade, set for September 28, aims to reduce transaction finality time and improve network reliability. Ethereum's Glamsterdam upgrade has been delayed to Q4 2024. Solana ETFs saw 12 weeks of inflows, while Ethereum funds had $140M outflows in September.

Original reporting
Published Sep 25, 2026, 11:11 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 25, 2026, 11:27 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
Ethereum and Solana: Recent Gains and Upcoming Changes In September — source image
Decision brief

The 30-second read

$SOL-USDBullishMed
01

Why it matters

Solana's imminent Alpenglow upgrade provides a concrete catalyst, while Ethereum's delay removes a near‑term boost, creating divergent short‑term outlooks.

02

Market read

Upgrade news creates immediate trading opportunities for SOL and short‑term risk for ETH.

03

What to watch

Regulatory scrutiny on proof‑of‑stake networks could mute price moves regardless of technical upgrades.

Relevance 7/10Novelty 8/10Timing: Sep 28 upgrade launch for SOL; Q4 timeline for ETH

Background

The article reports recent price gains for SOL and ETH and details upcoming network upgrades that could influence future price action.

Company-level read

Ticker impact

$SOL-USDBullishMedium confidence
Context

Solana's Alpenglow upgrade scheduled for Sep 28 aims to cut finality to 150 ms and raise fault tolerance, a fresh catalyst for price.

Expected impact

Potential short‑term rally ahead of Sep 28, with upside of 5‑10% if upgrade proceeds smoothly.

Evidence & confidence

Historical upgrade rallies and the 15.5% recent gain suggest market optimism; execution risk remains.

$ETH-USDBearishMedium confidence
Context

Ethereum's Glamsterdam upgrade has slipped to Q4, delaying expected network improvements and possibly dampening momentum.

Expected impact

Flat to modest pullback of 2‑4% until new timeline is clearer.

Evidence & confidence

Market had priced in a Q3 rollout; the push to Q4 removes near‑term upside.

Market effects

Both upgrades affect the broader smart‑contract layer‑1 sector, influencing DeFi and NFT activity.

Solana's upgrade may boost activity on US‑based DEXs; Ethereum delay could shift capital to alternative chains.

Crypto markets worldwide will react to the timing shift, especially on exchanges with high SOL/ETH liquidity.

Counterpoint

If the Alpenglow upgrade encounters bugs, SOL could see a sharp correction despite hype.

Key entities

  • Solana

    Layer‑1 blockchain undergoing Alpenglow upgrade.

  • Ethereum

    Layer‑1 blockchain with Glamsterdam upgrade delayed.

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