CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in IRON — Disc Medicine, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in IRON
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$18,824,919
+$2,763,511 QoQ
Shares Held
257,382
+2.5% QoQ
Ownership
0.670%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#37
of 216 holders
Holding Since
Mar 2021
18 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IRON 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. IRON ranks #73 (0.3% 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 IRON
Export CSV
18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $18,824,919 | 257,382 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $16,061,408 | 251,195 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $19,617,366 | 247,039 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $14,977,362 | 226,655 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $10,816,603 | 204,241 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $9,666,149 | 194,725 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $10,465,564 | 165,072 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $7,889,623 | 160,554 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $6,361,765 | 141,153 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $5,733,710 | 92,093 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $5,182,516 | 89,725 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $3,955,716 | 84,200 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $912,686 | 20,556 | Shares | Sole | 2023-08-10 | |
| 2022-03-31 GMTX | — | 46,453 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 GMTX | — | 57,736 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 GMTX | — | 57,736 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 GMTX | — | 187,123 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 GMTX | — | 143,852 | Shares | Sole | 2021-05-17 | |
| No filing history on record for this holder in this stock. | ||||||