{
 "company": "Spdr S&P Midcap 400 Etf Trust",
 "ticker": "MDY",
 "page": "https://www.moatshark.com/s/mdy",
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holders": [
  {
   "manager": "Matrix Asset Advisors",
   "moatshark_slug": "matrix-asset-advisors",
   "period": "2026-09-30",
   "portfolio_pct": 0.31,
   "value_usd": 3801035,
   "change": "REDUCE",
   "share_change_pct": -2.3,
   "quarters_held": 23
  },
  {
   "manager": "Mairs & Power",
   "moatshark_slug": "mairs-power",
   "period": "2026-06-30",
   "portfolio_pct": 0.01,
   "value_usd": 561353,
   "change": "REDUCE",
   "share_change_pct": -2.6,
   "quarters_held": 2
  }
 ]
}