Token balances in your Slingshot 2.0 account are displayed below the Trending section of the app, under Tokens. If you have USDC, it will be displayed below the Total Balance section, besides the green $ symbol:

The account in the example above has $5.57 worth of ETH, SOL and other tokens, and $0 USDC left.

Clicking on a token will load that token’s chart and select it for the swap form.

Slingshot 2.0's interface aggregates same-token balances across networks. For example, if you have 4 USDC on Optimism and 6 USDC on Arbitrum, the interface will show a USDC balance of 10. When you swap USDC for any other token on any other chain, the balances on both networks will be used.