Mass General Brigham, Inc — 13F Holdings

2026 Q3  ·  10 Positions

2026 Q3 Portfolio Activity

In 2026 Q3, Mass General Brigham, Inc maintained a portfolio of 10 distinct positions. The most significant new addition was VANGUARD INTL EQUITY INDEX F, now representing 65.85% of the total fund value. Conversely, Mass General Brigham, Inc completely exited their position in ISHARES TR.
Position History hover any row below to update
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Mass General Brigham, Inc Boston, MA Health System / Institutional Investor AUM $456M
PCA Score Concentration Risk
Risk ENB
Total Positions
10
Quarter
2026 Q3
Top Holding
VT (65.8%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-10 of 10

Mass General Brigham, Inc Full Holdings List — 2026 Q3

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
VT
VANGUARD INTL E...
ETF 65.85% — #1
Prev: #—
9.5
—
1,898,645 —
NEW
1,898,645 $300,465,571
$157.85 -1.7%
$157.85 -1.7%
2026 Q3 13F Filing 2026-09-30 2026-11-03
RVMD
REVOLUTION MEDI...
Healthcare 15.48% 17.85% #2 1
Prev: #3
6.5
—
no change no change
P
S
344,091 $70,628,119 2022 Q4 13F Filing 2026-09-30 2026-11-03
SPCX
SPACE EXPLORATI...
ETF 7.74% — #3
Prev: #—
7.6
—
234,140 —
NEW
234,140 $35,322,360 2026 Q3 13F Filing 2026-09-30 2026-11-03
LYNX
LYNTRIS INC
Industrials 5.17% — #4
Prev: #—
6.1
—
1,916,964 —
NEW
1,916,964 $23,597,827 2026 Q3 13F Filing 2026-09-30 2026-11-03
TNGX
TANGO THERAPEUT...
Healthcare 1.94% 3.07% #5 1
Prev: #4
2.3
—
no change no change
P
S
354,192 $8,837,090 2024 Q1 13F Filing 2026-09-30 2026-11-03
MAZE
MAZE THERAPEUTI...
Healthcare 1.49% 1.98% #6 1
Prev: #5
1.1
—
9,642 4.0%
P
S
249,636 $6,785,106 2025 Q4 13F Filing 2026-09-30 2026-11-03
KRMN
KARMAN HLDGS IN...
Industrials 1.49% 21.60% #7 5
Prev: #2
0.6
—
-1,352,793 -86.6%
P
S
209,261 $6,784,242 2025 Q4 13F Filing 2026-09-30 2026-11-03
MDLN
MEDLINE INC
Healthcare 0.52% 0.75% #8 2
Prev: #6
1.2
—
no change no change
P
S
68,413 $2,373,931 2025 Q4 13F Filing 2026-09-30 2026-11-03
IOT
SAMSARA INC
Technology 0.33% — #9
Prev: #—
3.6
—
39,772 —
NEW
39,772 $1,516,506 2023 Q2 13F Filing 2026-09-30 2026-11-03
ACWI
ISHARES TR
ETF 0.00% 54.76%
Sold All 😨
(Was: #1)
0.0
—
-1,259,657 -100.0%
CLOSED
— $— 2016 Q2 13F Filing 2026-09-30 2026-11-03
Showing 1-10 of 10 holdings

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