Mass General Brigham, Inc

Institutional manager·CIK 0001678378

Annual return

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SPY

—

Alpha

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Invested

$937.8M

Holdings

Trades YTD

Performance · Fund vs SPY

Cumulative return · quarterly snapshots

In development

Quarterly performance not yet computed for this fund.

The metrics pipeline computes return / SPY benchmark / alpha per quarter from this fund's 13F holdings and the SPY adj-close. It hasn't produced enough quarters here yet — the chart fills in automatically once at least two are on record.

Top holdings · current snapshot

Source: 13F-HR

$ACWI

ISHARES TR

Q4 2025: New position (4.61M shares)

62.4%

$KRMN

KARMAN HLDGS INC

Q4 2025: New position (1.56M shares)

26.7%

$RVMD

REVOLUTION MEDICINES INC

Q4 2025: New position (344.1k shares)

7.1%

$TNGX

TANGO THERAPEUTICS INC

Q4 2025: New position (354.2k shares)

1.6%

$MAZE

MAZE THERAPEUTICS INC

Q4 2025: New position (240.0k shares)

1.5%

$MDLN

MEDLINE INC

Q4 2025: New position (26.3k shares)

0.7%

See all 6 holdings · Pro →

Recent trades · Last 90 days

No Form 4 / 13D / 13G trade events on file in the recent window. 13F filers report position snapshots quarterly rather than per-trade events, so this section is most useful for managers who also file Form 4 or 13D/G.

Source data: SEC EDGAR · 13F-HR filings · Last refreshed 08:40 UTC.