{"account":{"slug":"vio-bank-cornerstone-money-market","bank":"Vio Bank (MidFirst Bank)","name":"Cornerstone Money Market Savings"},"status":"recent","lastVerified":"2026-11-02","officialSource":"https://www.viobank.com/cornerstone-money-market-savings","history":[{"date":"2026-11-02","apy":"3.40% (as of November 2026, cut from 3.45%)","monthlyFee":"$0 with e-statements ($5 paper statement fee otherwise)","minimumOpen":"$100","note":"Freshness-rotation reconfirmation: Vio Bank's product page still shows 3.40% APY. No change.","sourceUrl":"https://www.viobank.com/cornerstone-money-market-savings/","sourceLabel":"Vio Bank Cornerstone Money Market Savings page, checked November 2, 2026"}],"verificationEvents":[],"methodology":"https://creditcompound.com/how-we-rate#verification"}