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MGB

Mass General Brigham Portfolio holdings

AUM $361M
This Fund
S&P 500
This Quarter Est. Return
+17.18%
1 Year Est. Return
–
3 Year Est. Return
–
5 Year Est. Return
–
10 Year Est. Return
–
AUM
$361M
AUM Growth
-$108M
Cap. Flow
-$137M
Cap. Flow %
-37.84%
Top 10 Hldgs %
100%
Holding
6
New
–
Increased
–
Reduced
2
Closed
–

Top Buys

No buys this quarter

Top Sells

Rank Stock Value
1
ACWI icon
iShares MSCI ACWI ETF
ACWI
+$137M
2
MDLN
Medline Inc
MDLN
+$78.3K

Sector Composition

Rank Sector Weight
1 Healthcare 23.64%
2 Industrials 21.6%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ACWI icon
1
iShares MSCI ACWI ETF
ACWI
$33.4B
$198M 54.76%
1,259,657
-893,820
-42% -$137M
KRMN
2
Karman Holdings
KRMN
$8.21B
$78M 21.6%
1,562,054
– –
RVMD icon
3
Revolution Medicines
RVMD
$44B
$64.4M 17.85%
344,091
– –
TNGX icon
4
Tango Therapeutics
TNGX
$4.31B
$11.1M 3.07%
354,192
– –
MAZE
5
Maze Therapeutics
MAZE
$1.52B
$7.16M 1.98%
239,994
– –
MDLN
6
Medline Inc
MDLN
$31.1B
$2.7M 0.75%
68,413
-1,944
-3% -$78.3K

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Mass General Brigham's Q2 2026 Portfolio in Review

As of Q2 2026, Mass General Brigham held 6 positions worth $361M, down 23% from $469M the previous quarter. Its ten largest holdings account for 100% of the portfolio.

Mass General Brigham withdrew a net $137M in Q2 2026, reducing 2 holdings. Its largest reduction was iShares MSCI ACWI ETF, cutting an estimated $137M.

By sector, the portfolio is most concentrated in Healthcare at 24% of assets, up from 11% a quarter earlier, followed by Industrials.

  • Mass General Brigham's biggest Q2 2026 reduction was iShares MSCI ACWI ETF, cutting an estimated $137M.
  • Mass General Brigham's ten largest holdings make up 100% of its $361M portfolio in Q2 2026.
  • Mass General Brigham opened 0 new positions and closed 0 in Q2 2026.
  • Mass General Brigham's portfolio value fell 23% quarter-over-quarter to $361M.

Based on Mass General Brigham's 13F filing for Q2 2026, filed 7 Aug 2026.