Mass General Brigham, Inc - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on January 27, 2026, for the 2025 Q4 period, Mass General Brigham, Inc held in its portfolio 7 assets valued at $809,786,992 (i.e. $809.79M).

The most valuable assets in the portfolio included: ISHARES TR ($652.83M), KARMAN HLDGS INC ($114.30M), and REVOLUTION MEDICINES INC ($27.41M).

The chart below shows the top 7 valuable assets, and the table below shows the top 7 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in Mass General Brigham, Inc Portfolio

ISHARES TR

KARMAN HLDGS INC

REVOLUTION MEDICINES INC

MAZE THERAPEUTICS INC

TANGO THERAPEUTICS INC

MEDLINE INC

RUBRIK INC

Mass General Brigham, Inc - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
ISHARES TR	4613955	652828493	MSCI ACWI ETF
KARMAN HLDGS INC	1562054	114295491	COM
REVOLUTION MEDICINES INC	344091	27406848	COM
MAZE THERAPEUTICS INC	239994	9942951	COM
TANGO THERAPEUTICS INC	354192	3138141	COM
MEDLINE INC	26294	1104348	COM
RUBRIK INC	14000	1070720	COM