CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in MCRB — Seres Therapeutics, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in MCRB
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$244,976
-$35,582 QoQ
Shares Held
31,049
-1.8% QoQ
Ownership
0.312%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#11
of 36 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MCRB Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $7,346,663,053 across 299 Biotechnology names. MCRB ranks #282 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
2,041,282 | $1,013,966,007 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
846,306 | $527,705,642 | |
| 3 | RVMD |
Revolution Medicines, Inc.
|
1,917,025 | $359,020,441 | |
| 4 | MRNA |
Moderna, Inc.
|
4,838,884 | $338,867,045 | |
| 5 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
755,377 | $227,391,137 | |
| 6 | INCY |
Incyte Corp
|
1,692,439 | $191,854,884 | |
| 7 | RPRX |
Royalty Pharma plc
|
3,083,528 | $172,893,414 | |
| 8 | CYTK |
Cytokinetics Inc
|
1,565,781 | $133,388,883 |
All Filings in MCRB
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $244,976 | 31,049 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $280,558 | 31,630 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $466,770 | 31,369 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $604,193 | 31,403 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $387,472 | 34,876 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $583,874 | 834,107 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $719,500 | 865,825 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $708,287 | 748,718 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $380,785 | 525,947 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $578,424 | 747,318 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $946,941 | 676,387 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $1,800,629 | 756,567 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $3,421,348 | 714,269 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $3,594,037 | 633,869 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $3,566,628 | 636,898 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $4,000,045 | 623,060 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $1,616,860 | 471,388 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $3,433,107 | 482,178 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $3,917,532 | 470,292 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $3,242,545 | 465,883 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $10,020,935 | 420,165 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $7,873,142 | 382,377 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $9,121,546 | 372,308 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $9,701,638 | 342,693 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $1,979,626 | 415,888 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $1,390,397 | 389,467 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||