Latest Partners HealthCare System, Inc Stock Portfolio
$468Million– No. of Holdings #6
Partners HealthCare System, Inc Performance:
2026 Q1: -0.05%YTD: -0.05%
Performance for 2026 Q1 is -0.05%, and YTD is -0.05%.
About Partners HealthCare System, Inc and 13F Hedge Fund Stock Holdings
On 2026-05-05, the fund reported it's updated stock portfolio. In the 13F Holdings report, Mass General Brigham, Inc reported an equity portfolio of $468.9 Millions as of 31 Mar, 2026.
The top stock holdings of Mass General Brigham, Inc are AAXJ, , RVMD. The fund has invested 62.4% of it's portfolio in ISHARES TR and 26.7% of portfolio in KARMAN HLDGS INC.
The fund managers got completely rid off RUBRIK INC stocks. They significantly reduced their stock positions in ISHARES TR (AAXJ). The fund showed a lot of confidence in some stocks as they added substantially to MEDLINE INC.
The top stock holdings of Mass General Brigham, Inc are AAXJ, , RVMD. The fund has invested 62.4% of it's portfolio in ISHARES TR and 26.7% of portfolio in KARMAN HLDGS INC.
The fund managers got completely rid off RUBRIK INC stocks. They significantly reduced their stock positions in ISHARES TR (AAXJ). The fund showed a lot of confidence in some stocks as they added substantially to MEDLINE INC.
Partners HealthCare System, Inc Equity Portfolio Value
Last Reported on: 05 May, 2026
Partners HealthCare System, Inc Annual Return Estimates Vs S&P 500
Our best estimate is that Mass General Brigham, Inc made a return of -0.05% in the last quarter. In trailing 12 months, it's portfolio return was NA%.
- Performance
- S&P 500
New Buys
Additions
| Ticker | % Inc. |
|---|---|
| medline inc | 167 |
Additions to existing portfolio by Partners HealthCare System, Inc
Reductions
| Ticker | % Reduced |
|---|---|
| ishares tr | -53.33 |
Partners HealthCare System, Inc reduced stake in above stock
Sold off
| Ticker | $ Sold |
|---|---|
| rubrik inc | -1,070,720 |
Partners HealthCare System, Inc got rid off the above stocks
Sector Distribution
Mass General Brigham, Inc has about 91.3% of it's holdings in Others sector.
- Others
- Healthcare
| Sector | % |
|---|---|
| Others | 91.3 |
| Healthcare | 8.7 |
Market Cap. Distribution
Mass General Brigham, Inc has about 7.1% of it's portfolio invested in the large-cap and mega-cap stocks.
- UNALLOCATED
- LARGE-CAP
- SMALL-CAP
| Category | % |
|---|---|
| UNALLOCATED | 91.3 |
| LARGE-CAP | 7.1 |
| SMALL-CAP | 1.6 |
Stocks belong to which Index?
About 8.7% of the stocks held by Mass General Brigham, Inc either belong to S&P 500 or RUSSELL 2000 index.
- Others
- RUSSELL 2000
| Index | % |
|---|---|
| Others | 91.3 |
| RUSSELL 2000 | 8.7 |
Partners HealthCare System, Inc Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of Partners HealthCare System, Inc
Mass General Brigham, Inc has 6 stocks in it's portfolio. AAXJ proved to be the most loss making stock for the portfolio. was the most profitable stock for Mass General Brigham, Inc last quarter.
Last Reported on: 05 May, 2026| Ticker | Namesorted ascending | % Portfolio | Shares Held | $ Value | Type | % Change | Options | |
|---|---|---|---|---|---|---|---|---|
| AAXJ | ishares tr | 62.42 | 2,153,480 | 292,711,000 | reduced | -53.33 | ||
| RVMD | revolution medicines inc | 7.14 | 344,091 | 33,462,800 | unchanged | 0.00 | ||
| TNGX | tango therapeutics inc | 1.58 | 354,192 | 7,409,700 | unchanged | 0.00 | ||
| karman hldgs inc | 26.67 | 1,562,050 | 125,042,000 | unchanged | 0.00 | |||
| maze therapeutics inc | 1.53 | 239,994 | 7,163,820 | unchanged | 0.00 | |||
| medline inc | 0.67 | 70,357 | 3,130,890 | added | 167 | |||
| rubrik inc | 0.00 | 0.00 | 0.00 | sold off | -100 | |||