{
  "daily_volatility": {
    "AAPL": 0.005651,
    "MSFT": 0.005458,
    "SPY": 0.004426,
    "TSLA": 0.004307
  },
  "mean_daily_return": {
    "AAPL": 0.001237,
    "MSFT": 0.000644,
    "SPY": 0.000588,
    "TSLA": 0.000424
  },
  "sample_end": "2025-12-19",
  "sample_start": "2025-01-02",
  "symbols": [
    "AAPL",
    "MSFT",
    "SPY",
    "TSLA"
  ]
}