[
  {
    "date": "2025-02-20",
    "summary": "Market showed slight gains today.",
    "details": {
      "sp500": "+0.2%",
      "dow": "+0.1%"
    }
  },
  {
    "date": "2025-02-19",
    "summary": "Market declined due to tech sell-off.",
    "details": {
      "nasdaq": "-1.5%"
    }
  }
]