Institutional Fund
Flagship Pioneering, LLC
Cambridge, MACIK 14002405 filings on record
Portfolio Value
$1.16B
Q1 2026
Holdings
5
Reported positions
New Buys
1
Opened this quarter
QoQ Change
+258.5%
from $324.04M
Portfolio Value Trend
Reported 13F value by quarter
Portfolio value trend — upgrade to see history
UpgradeTop Allocations
Largest positions by weight
- Generate Biomedicines Inc67.4%
- Moderna Inc20.3%
- Sana Biotechnology Inc6.2%
- Foghorn Therapeutics Inc5.2%
- Seres Therapeutics Inc0.9%
Portfolio Holdings
5 positions · Q1 2026
| # | Security | Shares | Value | % Port. | Δ Shares | Activity |
|---|---|---|---|---|---|---|
| 1 | Generate Biomedicines Inc | 62.67M | $783.41M | 67.4% | +62.67M | New |
| 2 | Moderna Inc | 4.63M | $235.31M | 20.3% | 0 | Held |
| 3 | Sana Biotechnology Inc | 25.00M | $72.01M | 6.2% | 0 | Held |
| 4 | Foghorn Therapeutics Inc | 12.67M | $60.58M | 5.2% | 0 | Held |
| 5 | Seres Therapeutics Inc | 1.16M | $10.25M | 0.9% | 0 | Held |