Mass General Brigham, Inc

All Holdings — 2025 Q4

Portfolio Concentration Analytics: 7.6
Risk-based ENB:
Total Positions
10
Quarter
2025 Q4
Top Holding
ACWI (80.6%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-10 of 10
Stock History Sector / Type Port % Prev % Rank / Prev Conviction Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
ACWI
ISHARES TR
ETF 80.62% #1
Prev: #—
10.0 4,613,955 no change
NEW
4,613,955 $652,828,493 2016 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
KRMN
KARMAN HLDGS IN...
Industrials 14.11% #2
Prev: #—
7.6 1,562,054 no change
NEW
1,562,054 $114,295,491 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
RVMD
REVOLUTION MEDI...
Healthcare 3.38% 35.15% #3 1
Prev: #2
3.4 5,900 1.7%
P
S
344,091 $27,406,848 2022 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
MAZE
MAZE THERAPEUTI...
Healthcare 1.23% #4
Prev: #—
2.5 239,994 no change
NEW
239,994 $9,942,951 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
TNGX
TANGO THERAPEUT...
Healthcare 0.39% 6.25% #5 1
Prev: #4
0.2 no change no change
P
S
354,192 $3,138,141 2024 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
MDLN
MEDLINE INC
Healthcare 0.14% #6
Prev: #—
2.1 26,294 no change
NEW
26,294 $1,104,348 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
RBRK
RUBRIK INC
Technology 0.13% #7
Prev: #—
2.1 14,000 no change
NEW
14,000 $1,070,720 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
IOT
SAMSARA INC
Technology 0.00% 49.50%
Sold All 😨
(Was: #1)
0.3 -448,753 -100.0%
CLOSED
$— 2023 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
PLRX
PLIANT THERAPEU...
Healthcare 0.00% 7.42%
Sold All 😨
(Was: #3)
0.3 -288,690 -100.0%
CLOSED
$— 2024 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
FULC
FULCRUM THERAPE...
Healthcare 0.00% 1.68%
Sold All 😨
(Was: #5)
0.3 -205,356 -100.0%
CLOSED
$— 2021 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
Showing 1-10 of 10 holdings

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