Latest Flagship Pioneering Inc. Stock Portfolio
$1.16Billion | No. of Holdings #5
Flagship Pioneering Inc. Performance
2026 Q1+4.89%
YTD+4.89%
2025+5.21%
About Flagship Pioneering Inc. and 13F Hedge Fund Stock Holdings
On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, Flagship Pioneering, LLC reported an equity portfolio of $1.2 Billions as of 31 Mar, 2026. <br><br> The top stock holdings of Flagship Pioneering, LLC are , MRNA, SANA. The fund has invested 67.4% of it's portfolio in GENERATE BIOMEDICINES INC and 20.3% of portfolio in MODERNA INC. <br><br> Flagship Pioneering, LLC opened new stock positions in GENERATE BIOMEDICINES INC.
Flagship Pioneering Inc. Equity Portfolio Value
Last Reported on: 15 May, 2026
$1.16Billion
as of May 15, 2026Flagship Pioneering Inc. Annual Return Estimates Vs S&P 500
Our best estimate is that Flagship Pioneering, LLC made a return of 4.89% in the last quarter. In trailing 12 months, it's portfolio return was 46.25%.
- Performance
- S&P 500
New Buys
| Ticker | $ Bought |
|---|---|
| generate biomedicines inc | 783,414,000 |
New stocks bought by Flagship Pioneering Inc.
Additions
No additions were made to existing positions by Flagship Pioneering Inc.
Reductions
None of the existing positions were reduced by Flagship Pioneering Inc.
Sold off
None of the stocks were completely sold off by Flagship Pioneering Inc.
Sector Distribution
Flagship Pioneering, LLC has about 67.4% of it's holdings in Others sector.
- Others
- Healthcare
| Sector | % |
|---|---|
| Others | 67.4 |
| Healthcare | 32.6 |
Market Cap. Distribution
Flagship Pioneering, LLC has about 20.3% of it's portfolio invested in the large-cap and mega-cap stocks.
- UNALLOCATED
- LARGE-CAP
- SMALL-CAP
| Category | % |
|---|---|
| UNALLOCATED | 67.4 |
| LARGE-CAP | 20.3 |
| SMALL-CAP | 11.4 |
Stocks belong to which Index?
About 32.6% of the stocks held by Flagship Pioneering, LLC either belong to S&P 500 or RUSSELL 2000 index.
- Others
- S&P 500
- RUSSELL 2000
| Index | % |
|---|---|
| Others | 67.4 |
| S&P 500 | 20.3 |
| RUSSELL 2000 | 12.3 |
Flagship Pioneering Inc. Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of Flagship Pioneering Inc.
Flagship Pioneering, LLC has 5 stocks in it's portfolio. SANA proved to be the most loss making stock for the portfolio. MRNA was the most profitable stock for Flagship Pioneering, LLC last quarter.
$1.16BTotal Value
5.00Positions
15 May, 2026Last Reported
| Expand | Holdingsorted ascending | % Portfolio | Shares Held | $ Value | % Change |
|---|---|---|---|---|---|
 Foghorn Therapeutics Inc Flagship Pioneering Inc.'s holding in Foghorn Therapeutics Inc over time | 5.22% | 12,674,100 | $60.58M 5.22% | 0%unchanged 0 percentunchanged | |
 Seres Therapeutics Inc Flagship Pioneering Inc.'s holding in Seres Therapeutics Inc over time | 0.88% | 1,155,850 | $10.25M 0.88% | 0%unchanged 0 percentunchanged | |
 Moderna Inc Moderna IncMRNA Flagship Pioneering Inc.'s holding in Moderna Inc over time | 20.26% | 4,632,150 | $235.31M 20.26% | 0%unchanged 0 percentunchanged | |
 Sana Biotechnology Inc Flagship Pioneering Inc.'s holding in Sana Biotechnology Inc over time | 6.2% | 25,001,900 | $72.01M 6.2% | 0%unchanged 0 percentunchanged | |
Com Shs Generate Biomedicines IncGenerate Biomedicines Inc | 67.44% | 62,673,100 | $783.41M 67.44% | Newnew position | |