Latest Period
Q1 2026
Security Snapshot
PTC THERAPEUTICS, INC. - Common Stock, $0.001 par value per share (PTCT) Institutional Ownership
CUSIP: 69366J200
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
348
Shares (Excl. Options)
95,496,110
Price
$68.13
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- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Symbol
- PTCT on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 95,496,110
- Total 13F value
- $6,505,397,980
- Portfolio coverage rank
- 0%
- Share change
- +2,385,214
- Value change
- +$134,943,005
- Number of holders
- 348
- Shares outstanding
- 81,782,297
- SEC-reported price per share
- $73.46
- Insider filing price
- $73.46
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- PTCT - PTC THERAPEUTICS, INC. - Common Stock, $0.001 par value per share is tracked under CUSIP 69366J200.
- 348 institutions reported positions in Q1 2026.
- 9 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 349 to 348 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $7,040,738,182 to $6,505,397,980.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 348 institutions filings for Q1 2026.
Security key
69366J200
Latest holder period
Q1 2026
13F holders
348
13D/G owners
9
CIK / CUSIP context first
Open Q1 2026 holders
PTCT full holder history
PTC THERAPEUTICS, INC. SEC filings
PTC THERAPEUTICS, INC. company facts
PTC THERAPEUTICS, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 69366J200:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
9
Security
PTCT
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | +85% | $892,256,965 | +$421,991,884 | 11,904,696 | +90% | BlackRock, Inc. | 30 Nov 2025 |
| JANUS HENDERSON GROUP PLC | 8.7% | +45% | $494,116,913 | +$160,878,918 | 7,193,433 | +48% | JANUS HENDERSON GROUP PLC | 31 Mar 2026 |
| ARMISTICE CAPITAL, LLC | 6.9% | -18% | $269,133,425 | -$46,705,135 | 5,434,843 | -15% | Armistice Capital, LLC | 31 Mar 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.9% | $331,883,645 | 4,871,329 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $291,899,442 | 4,284,448 | Vanguard Capital Management | 31 Mar 2026 | |||
| STATE STREET CORP | 5.2% | $326,100,949 | 4,206,126 | STATE STREET CORPORATION | 31 Dec 2025 | |||
| WELLINGTON MANAGEMENT GROUP LLP | 4.8% | -23% | $299,837,971 | -$71,307,675 | 3,867,380 | -19% | Wellington Management Group LLP | 31 Dec 2025 |
| Camber Capital Management LP | 4.2% | $158,464,000 | 3,200,000 | Camber Capital Management LP | 31 Dec 2024 | |||
| TORONTO DOMINION BANK | 3.7% | -30% | $207,852,162 | -$76,401,826 | 3,025,945 | -27% | The Toronto-Dominion Bank | 31 Mar 2026 |
As of 31 Mar 2026, 348 institutional investors reported holding 95,496,110 shares of PTC THERAPEUTICS, INC. - Common Stock, $0.001 par value per share (PTCT). This represents 117% of the company’s total 81,782,297 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
86%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 16% | 12,948,717 | +1.3% | 0.02% | $882,196,090 |
| RTW INVESTMENTS, LP | 9.5% | 7,746,415 | 0% | 5.3% | $527,763,254 |
| JANUS HENDERSON GROUP PLC | 8.8% | 7,193,433 | +48% | 0.23% | $489,997,100 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.9% | 4,804,594 | 0% | 0.02% | $327,336,989 |
| STATE STREET CORP | 5.3% | 4,346,519 | +3.3% | 0.01% | $296,128,339 |
| WELLINGTON MANAGEMENT GROUP LLP | 4.8% | 3,942,610 | +1.9% | 0.05% | $268,610,018 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 3,676,256 | 0% | 0.01% | $250,463,321 |
| TORONTO DOMINION BANK | 3.7% | 3,025,963 | -27% | 0.4% | $206,158,859 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7% | 2,209,954 | +9.6% | 0.01% | $150,589,658 |
| ARMISTICE CAPITAL, LLC | 2.5% | 2,074,449 | -26% | 4.7% | $141,332,210 |
| BANK OF AMERICA CORP /DE/ | 2.3% | 1,886,841 | +32% | 0.01% | $128,550,476 |
| Hood River Capital Management LLC | 2% | 1,664,559 | +66% | 1.1% | $113,406,405 |
| D. E. Shaw & Co., Inc. | 2% | 1,640,381 | -6% | 0.09% | $111,759,157 |
| FMR LLC | 1.9% | 1,528,362 | -9.1% | 0.01% | $104,127,329 |
| TANG CAPITAL MANAGEMENT LLC | 1.8% | 1,500,000 | 0% | 5.2% | $102,195,000 |
| UBS Group AG | 1.7% | 1,364,768 | +41% | 0.02% | $92,981,644 |
| Jefferies Financial Group Inc. | 1.7% | 1,354,459 | -18% | 1.1% | $92,279,292 |
| Pictet Asset Management Holding SA | 1.4% | 1,183,720 | +21% | 0.08% | $80,063,048 |
| FRANKLIN RESOURCES INC | 1.4% | 1,121,388 | -13% | 0.02% | $76,400,144 |
| Driehaus Capital Management LLC | 1.2% | 1,015,772 | -11% | 0.51% | $69,204,546 |
| Palo Alto Investors LP | 1.1% | 921,607 | +2% | 9.6% | $62,789,085 |
| BNP PARIBAS FINANCIAL MARKETS | 1.1% | 920,476 | 0% | 0.04% | $62,712,030 |
| DIMENSIONAL FUND ADVISORS LP | 1.1% | 890,715 | +42% | 0.01% | $60,674,282 |
| SG Americas Securities, LLC | 1.1% | 879,701 | -1.7% | 0.07% | $59,934,000 |
| Invesco Ltd. | 1.1% | 865,451 | +99% | 0.01% | $58,963,177 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 95,496,110 | $6,505,397,980 | +$134,943,005 | $68.13 | 348 |
| 2025 Q4 | 92,686,358 | $7,040,738,182 | +$724,074,706 | $75.96 | 349 |
| 2025 Q3 | 82,678,571 | $5,073,764,701 | +$181,615,186 | $61.37 | 290 |
| 2025 Q2 | 79,911,059 | $3,903,121,530 | +$46,553,598 | $48.84 | 281 |
| 2025 Q1 | 78,779,105 | $4,025,030,193 | +$67,568,904 | $50.96 | 260 |
| 2024 Q4 | 77,719,633 | $3,508,291,455 | -$16,690,343 | $45.14 | 237 |
| 2024 Q3 | 78,808,939 | $2,925,502,301 | -$38,880,960 | $37.10 | 199 |
| 2024 Q2 | 79,829,985 | $2,441,610,603 | -$156,636,791 | $30.58 | 196 |
| 2024 Q1 | 85,061,593 | $2,474,579,740 | +$22,339,643 | $29.09 | 179 |
| 2023 Q4 | 84,601,340 | $2,331,624,240 | +$83,990,908 | $27.56 | 169 |
| 2023 Q3 | 81,614,706 | $1,828,981,040 | -$51,055,249 | $22.41 | 175 |
| 2023 Q2 | 81,025,132 | $3,295,908,701 | +$98,098,293 | $40.67 | 201 |
| 2023 Q1 | 78,433,463 | $3,798,260,033 | +$90,684,481 | $48.44 | 198 |
| 2022 Q4 | 76,981,862 | $2,938,237,687 | +$13,606,355 | $38.17 | 196 |
| 2022 Q3 | 76,313,271 | $3,830,944,634 | +$86,495,993 | $50.20 | 199 |
| 2022 Q2 | 74,083,474 | $2,967,960,851 | +$15,896,836 | $40.06 | 171 |
| 2022 Q1 | 73,730,204 | $2,750,879,876 | -$34,162,193 | $37.31 | 170 |
| 2021 Q4 | 75,095,879 | $2,991,389,896 | +$33,191,074 | $39.83 | 166 |
| 2021 Q3 | 74,270,018 | $2,763,598,375 | +$31,311,987 | $37.21 | 174 |
| 2021 Q2 | 73,830,496 | $3,120,577,918 | +$3,824,478 | $42.27 | 174 |
| 2021 Q1 | 73,197,638 | $3,466,689,095 | +$45,849,603 | $47.35 | 196 |
| 2020 Q4 | 72,827,805 | $4,447,644,286 | +$100,239,157 | $61.03 | 205 |
| 2020 Q3 | 71,012,920 | $3,320,619,406 | +$114,326,210 | $46.75 | 189 |
| 2020 Q2 | 68,359,820 | $3,451,278,985 | +$259,126,213 | $50.74 | 198 |
| 2020 Q1 | 64,213,019 | $2,865,901,646 | +$125,294,621 | $44.61 | 197 |