Flagship Pioneering, LLC
$1.54B
5
$0
100.0%
Holdings
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026 | |||||
 GENB | $1.06B | 68.66% | 48.86% | Not reported | Q1 2026 |
 MRNA | $324M | 21.07% | 1.16% | Not reported | Q4 2018 |
 SANA | $87.3M | 5.67% | 8.35% | Not reported | Q1 2021 |
 FHTX | $61.8M | 4.02% | 21.59% | Not reported | Q4 2020 |
 MCRB | $9.12M | 0.59% | 11.76% | Not reported | Q3 2016 |
| Q1 2026 | |||||
| GENB | $783M | 67.44% | 48.89% | New | Q1 2026 |
| MRNA | $235M | 20.26% | 1.17% | Not reported | Q4 2018 |
| SANA | $72M | 6.20% | 9.27% | Not reported | Q1 2021 |
| FHTX | $60.6M | 5.22% | 21.59% | Not reported | Q4 2020 |
| MCRB | $10.3M | 0.88% | 12.05% | Not reported | Q3 2016 |
| Q3 2025 | |||||
| MRNA | $120M | 40.89% | 1.18% | Not reported | Q4 2018 |
| SANA | $88.8M | 30.33% | 9.53% | Not reported | Q1 2021 |
| FHTX | $62M | 21.18% | 22.42% | Not reported | Q4 2020 |
| MCRB | $22.2M | 7.60% | 13.19% | Not reported | Q3 2016 |
| Q2 2025 | |||||
| MRNA | $128M | 47.60% | 1.19% | Not reported | Q4 2018 |
| SANA | $68.3M | 25.42% | 10.85% | Not reported | Q1 2021 |
| FHTX | $59.6M | 22.19% | 22.71% | Not reported | Q4 2020 |
| MCRB | $12.8M | 4.78% | 13.20% | 0.0% | Q3 2016 |