{
  "source_url": "https://suninsightlab.com/api/prices?symbols=sp500,nvda,tsla,pltr&from=2010-01-01&to=2025-12-31",
  "retrieved_at": "2026-09-07T18:29:28+00:00",
  "sha256": "8bc1081a46b57d783635b579d109146ec9b304d1a83bb9b67fa9a738c607cbd3",
  "rows": {
    "sp500": 192,
    "nvda": 192,
    "tsla": 187,
    "pltr": 64
  },
  "upstream": "Yahoo Finance via site ingestion into Cloudflare D1",
  "sampling": "First available trading-day close each month; stock adjusted-close field; sp500 price index",
  "scope": "Frozen published simulator observations, not independently verified vendor prices; no 2026 observations."
}