CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in PTCT — Ptc Therapeutics, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in PTCT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$49,846,769
-$5,978,741 QoQ
Shares Held
731,642
-0.4% QoQ
Ownership
0.882%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 99.98906569059731.ToString("F0")%
Shared 0.ToString("F0")%
None 0.010934309402686014.ToString("F0")%
Common Shares in PTCT Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $6,182,986,350 across 288 Biotechnology names. PTCT ranks #25 (0.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,920,871 | $857,745,736 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
804,508 | $621,595,061 | |
| 3 | MRNA |
Moderna, Inc.
|
4,734,356 | $240,505,284 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
673,356 | $222,793,299 | |
| 5 | INSM |
INSMED Inc
|
1,069,390 | $174,866,652 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
1,735,476 | $168,775,041 | |
| 7 | INCY |
Incyte Corp
|
1,729,102 | $162,743,080 | |
| 8 | BBIO |
BridgeBio Pharma, Inc.
|
1,976,094 | $146,744,740 |
All Filings in PTCT
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $49,846,769 | 731,642 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $55,825,510 | 734,933 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $43,128,258 | 702,758 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $34,564,263 | 707,704 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $33,739,291 | 662,074 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $30,952,904 | 685,709 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $26,219,683 | 706,730 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $20,146,960 | 658,828 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $18,015,233 | 619,293 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $16,836,900 | 610,918 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $13,373,458 | 596,763 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $23,323,228 | 573,475 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $27,044,487 | 558,309 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $21,374,627 | 559,985 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $27,483,897 | 547,488 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $21,173,232 | 528,538 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $19,116,897 | 512,380 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $19,882,299 | 499,179 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $18,181,178 | 488,610 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $20,835,221 | 492,908 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $22,394,892 | 472,965 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $27,524,591 | 451,001 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $20,713,849 | 443,077 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $21,820,483 | 430,045 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $17,092,410 | 383,152 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||