> For the complete documentation index, see [llms.txt](https://teragon.gitbook.io/teragon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teragon.gitbook.io/teragon/teragons-three-pillars/vectors/chain-ecosystem-indices-ceis.md).

# Chain Ecosystem Indices (CEIs)

### What are Chain Ecosystem Indexes (CEIs)?

This is a sub-category of Indices that track >80% market cap of tokens for a given blockchain ecosystem. It consists of tokens native to that chain.

### Which CEIs does Teragon provide?

* Avalanche Ecosystem Index (avaxCEI)
* BSC Ecosystem Index (bscCEI)

### What is the in-depth methodology behind CEIs

{% embed url="<https://docs.google.com/document/d/1FiPbkRaioPJZnk634lcS2a2FkqowThdF24l9f9etjJo/edit>" %}