2026 Q2 Portfolio Activity
In 2026 Q2, Flagship Pioneering, LLC maintained a portfolio of 5 distinct positions.
Position History
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Total Positions
5
Quarter
2026 Q2
Top Holding
N/A (68.7%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-5 of 5
Flagship Pioneering, LLC Full Holdings List — 2026 Q2
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
N/A
GENERATE BIOMED...
|
|
Unknown | 68.66% | 67.44% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
62,673,117 | $1,057,295,483 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
MRNA
MODERNA INC
|
Healthcare | 21.07% | 20.26% |
#2
Prev: #2
|
6.5 |
—
|
no change | no change |
P
S
|
4,632,149 | $324,389,395 | 2018 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
SANA
SANA BIOTECHNOL...
|
Healthcare | 5.67% | 6.20% |
#3
Prev: #3
|
4.3 |
—
|
no change | no change |
P
S
|
25,001,856 | $87,256,477 | 2021 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
FHTX
FOGHORN THERAPE...
|
Healthcare | 4.02% | 5.22% |
#4
Prev: #4
|
3.1 |
—
|
no change | no change |
P
S
|
12,674,120 | $61,849,706 | 2020 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
MCRB
SERES THERAPEUT...
|
Healthcare | 0.59% | 0.88% |
#5
Prev: #5
|
1.7 |
—
|
no change | no change |
P
S
|
1,155,850 | $9,119,658 | 2025 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 |
Showing 1-5 of 5 holdings