CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in KRRO — Korro Bio, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in KRRO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$317,769
+$166,149 QoQ
Shares Held
24,110
+80.0% QoQ
Ownership
0.164%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#46
of 106 holders
Holding Since
Mar 2024
9 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in KRRO 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. KRRO ranks #275 (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 KRRO
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $317,769 | 24,110 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $151,620 | 13,394 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $130,795 | 16,329 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $1,106,306 | 23,101 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $222,022 | 17,776 | Shares | Sole | 2025-08-12 | |
| 2024-12-31 | $666,148 | 17,498 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $587,089 | 17,567 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $594,994 | 17,567 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $283,230 | 3,147 | Shares | Sole | 2024-05-09 | |
| No filing history on record for this holder in this stock. | ||||||