Partners HealthCare System

Latest statistics and disclosures from Mass General Brigham's latest quarterly 13F-HR filing:

  • Top 5 stock holdings are ACWI, KRMN, RVMD, TNGX, MAZE, and represent 99.33% of Mass General Brigham's stock portfolio.
  • Added to shares of these 1 stock: MDLN.
  • Reduced shares in these 2 stocks: ACWI (-$334M), RBRK.
  • Sold out of its position in RBRK.
  • Mass General Brigham was a net seller of stock by $-334M.
  • Mass General Brigham has $469M in assets under management (AUM), dropping by -42.09%.
  • Central Index Key (CIK): 0001678378

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Portfolio Holdings for Mass General Brigham

Mass General Brigham holds 6 positions in its portfolio as reported in the March 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Ishares Tr Msci Acwi Etf (ACWI) 62.4 $293M -53% 2.2M 135.92
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Karman Hldgs (KRMN) 26.7 $125M 1.6M 80.05
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Revolution Medicines (RVMD) 7.1 $34M 344k 97.25
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Tango Therapeutics (TNGX) 1.6 $7.4M 354k 20.92
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Maze Therapeatics (MAZE) 1.5 $7.2M 240k 29.85
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Medline (MDLN) 0.7 $3.1M +167% 70k 44.50
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Past Filings by Mass General Brigham

SEC 13F filings are viewable for Mass General Brigham going back to 2015

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