> ## Documentation Index
> Fetch the complete documentation index at: https://docs.useretina.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# EVM wallets and positions

> How Retina uses Zerion to read EVM wallet balances, protocol positions, staking, LPs, and vaults across every chain Zerion supports.

**Zerion** is the data provider for EVM wallets across every chain Zerion supports. Pasting an EVM address in [setup](/getting-started/quickstart) (or adding one later) causes Retina to call Zerion for that address and normalize the result into the [position model](/concepts/position-model).

What Zerion surfaces, and Retina ingests:

* Spot token balances per chain
* Protocol positions (staking, LPs, vaults, deposits)
* Position metadata used downstream for APY, maturity, and asset class

When Zerion does not return an APY for a position, Retina falls back to DeFiLlama. See [Yield data](/data-sources/yield).