Position in MCRB
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$9,119,656
-$1,132,733 QoQ
Shares Held
1,155,850
0.0% QoQ
Ownership
11.6%
of shares outstanding
% of Portfolio
0.59%
of 13F equity value
Holder Rank
#1
of 36 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 100%
None 0%
Common Shares in MCRB Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Flagship Pioneering, LLC holds $1,539,910,714 across 5 Biotechnology names. MCRB ranks #5 (0.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GENB |
Generate Biomedicines, Inc.
|
62,673,117 | $1,057,295,483 | |
| 2 | MRNA |
Moderna, Inc.
|
4,632,149 | $324,389,393 | |
| 3 | SANA |
Sana Biotechnology, Inc.
|
25,001,856 | $87,256,477 | |
| 4 | FHTX |
Foghorn Therapeutics Inc.
|
12,674,120 | $61,849,705 | |
| 5 | MCRB |
Seres Therapeutics, Inc.
This page
|
1,155,850 | $9,119,656 |
All Filings in MCRB
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $9,119,656 | 1,155,850 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $10,252,389 | 1,155,850 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $17,199,047 | 1,155,850 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $22,238,553 | 1,155,850 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $12,841,492 | 1,155,850 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $16,181,931 | 23,117,045 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $19,210,263 | 23,117,045 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $21,868,723 | 23,117,045 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $16,736,740 | 23,117,045 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $17,892,592 | 23,117,045 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $32,363,862 | 23,117,045 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $55,018,566 | 23,117,045 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $110,730,645 | 23,117,045 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $131,073,644 | 23,117,045 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $129,455,451 | 23,117,045 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $148,411,426 | 23,117,045 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $49,319,290 | 14,378,802 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $102,377,069 | 14,378,802 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $119,775,419 | 14,378,802 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $100,076,460 | 14,378,802 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $342,934,426 | 14,378,802 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $302,137,103 | 14,673,973 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $359,512,338 | 14,673,973 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $610,696,638 | 21,571,764 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $102,681,595 | 21,571,764 | Shares | Defined | 2020-08-13 | |
| 2020-03-31 | $77,011,197 | 21,571,764 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||