Crypto Index Weekly: The Rally Broadened but Altseason Has Not Arrived

Weekly view. Crypto benchmarks posted a broadly positive week as Bitcoin moved above $86,000 and capital began spreading into large and mid-cap assets. Institutional benchmarks gained more than 11%, sentiment moved close to extreme greed, and the Altcoin Season Index rose sharply — but the market has not yet crossed into a confirmed altseason.

Index performance

Institutional benchmarks led. The Nasdaq CME Crypto Index gained 11.61%, narrowly ahead of CCi30 at 11.12%. The close result suggests the rally was not confined to Bitcoin and Ethereum.

Breadth improved. CMC 100 gained 3.80%, compared with 3.63% for CMC 20. The difference is small, but broader exposure marginally outperformed the concentrated top-20 basket.

Index data: CMC 100 · CMC 20 · CCi30 · Nasdaq CME Crypto Index

CryptoIndex.ai benchmarks

CI100 and CI10 have not yet accumulated a persistent seven-day series under their current live calculation. Their displayed 7D figures still match the current 24-hour window and should not be published as genuine weekly returns.

• CI100: +4.16% over the latest daily window.
• CI10 Blue Chip: +3.48% over the latest daily window.

CI100’s strongest latest-session contributors were ONDO, Litecoin and Plasma, while Akedo, Hyperliquid and Bitway reduced the result. The difference between CI100 and CI10 indicates that participation extended beyond the ten largest eligible assets.

Live pages: CI100 · CI10 Blue Chip

Market regime

The Altcoin Season Index moved to 58, meaning more large-cap altcoins are outperforming Bitcoin over the trailing 90 days. It remains below the 75 threshold required for a confirmed altcoin season.

Bitcoin dominance declined only slightly to 58.5%. Capital is spreading into other assets, but there has not been a decisive rotation away from Bitcoin. Fear and Greed reached 71, close to the extreme-greed boundary of 75. Sentiment therefore moved faster than the underlying market structure.

Market gauges: Altcoin Season Index · Fear and Greed Index · Bitcoin Dominance

What moved the market

Bitcoin breakout. Bitcoin climbed above $86,000, reaching its highest level in eight months. The move was supported by stronger US spot Bitcoin ETF inflows, short covering and renewed regulatory optimism.

Macro resilience. Investors largely looked through the Federal Reserve’s rate increase and the failure of the Clarity Act to advance in the Senate. Falling oil prices reduced part of the inflation pressure that had previously pushed Treasury yields higher, although the rally remains sensitive to renewed increases in yields or weaker ETF demand.

Reporting: Wall Street Journal

Rebalancing and composition

No major scheduled reconstitutions were identified for CCi30 or the Nasdaq CME Crypto Index during the week.

• CI100 refreshes its selection and factor weights dynamically.
• CI10 remains equally weighted across ten eligible large-cap assets.
• CCi30 follows its monthly rebalance schedule.
• Nasdaq CME Crypto Index reconstitutes quarterly.

Because CI100 updates dynamically, changes in its contributors do not necessarily represent a formal scheduled rebalance.

Key takeaways

1. This was a broad rally. Nasdaq CME Crypto Index and CCi30 both gained more than 11%.
2. Altcoin participation improved materially. The Altcoin Season Index rose approximately 16 points to 58.
3. It is still not altseason. Bitcoin dominance remains elevated at 58.5%, and the altseason score remains below 75.
4. Sentiment is becoming crowded. Fear and Greed reached 71, leaving relatively little distance to extreme greed.
5. House weekly history is still incomplete. CI100 and CI10 currently surface a 24-hour window where a seven-day return would normally sit — useful for session context, not for week-over-week ranking.

CryptoIndex.ai research · Data cutoff: 25 September 2026