Filed: 5/5/2026ACC: 0001214659-26-005558
π What this filing means
MASS GENERAL BRIGHAM, INC filed this quarterly 13FβHR report disclosing 6 equity positions with a total reported market value of $468.92M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
6
Positions
$468.92M
Total AUM (reported)
4.72M
Total Shares
Allocation by class
MSCI ACWI ETF$292.71M62.4%
COM$176.21M37.6%
Portfolio Concentration
Top 3$451.22M96.2%
4β10$17.70M3.8%
Top 3 weight
96.2%
Top 10 weight
100.0%
Voting Authority Distribution
Total shares with voting rights: 0.00
Sole
Full voting authority
0.00
shares
% of voting shares0.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole6
Shared0
Other0
Dominant voting typeNone Β· 0.0% of voting shares
Institutional Holdings6
Rows:
ISHARES TR
SOLEShares2.15M
TypeSH
Market value$292.71M
62.42%
Sole
0.00
Shared
0.00
None
0.00
KARMAN HLDGS INC
SOLEShares1.56M
TypeSH
Market value$125.04M
26.67%
Sole
0.00
Shared
0.00
None
0.00
REVOLUTION MEDICINES INC
SOLEShares344.09K
TypeSH
Market value$33.46M
7.14%
Sole
0.00
Shared
0.00
None
0.00
TANGO THERAPEUTICS INC
SOLEShares354.19K
TypeSH
Market value$7.41M
1.58%
Sole
0.00
Shared
0.00
None
0.00
MAZE THERAPEUTICS INC
SOLEShares239.99K
TypeSH
Market value$7.16M
1.53%
Sole
0.00
Shared
0.00
None
0.00
MEDLINE INC
SOLEShares70.36K
TypeSH
Market value$3.13M
0.67%
Sole
0.00
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting β Sole | Shared | None |
|---|---|---|---|---|---|---|---|
ISHARES TRSOLE | MSCI ACWI ETF | 2.15M | SH | $292.71M 62.42% | 0.00 | 0.00 | 0.00 |
KARMAN HLDGS INCSOLE | COM | 1.56M | SH | $125.04M 26.67% | 0.00 | 0.00 | 0.00 |
REVOLUTION MEDICINES INCSOLE | COM | 344.09K | SH | $33.46M 7.14% | 0.00 | 0.00 | 0.00 |
TANGO THERAPEUTICS INCSOLE | COM | 354.19K | SH | $7.41M 1.58% | 0.00 | 0.00 | 0.00 |
MAZE THERAPEUTICS INCSOLE | COM | 239.99K | SH | $7.16M 1.53% | 0.00 | 0.00 | 0.00 |
MEDLINE INCSOLE | COM | 70.36K | SH | $3.13M 0.67% | 0.00 | 0.00 | 0.00 |