DaveManuel.com · Institutional Ownership · Who Owns It
PTC THERAPEUTICS INC (PTCT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
388
Reporting holders
$8.3B
Reported value
120.5%
Of shares outstanding
0.9%
Calls
0.1%
Puts
+32
Holder change
Institutions report 100,550,709 shares against 83,460,802 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $1.1B | 13,964,554 | 0.02% | 8q | +7.8%+$82.9M |
| RTW INVESTMENTS, LP | $631.9M | 7,746,415 | 5.39% | 31q | HELD |
| Jupiter Topco LLC | $590.2M | 7,236,402 | 0.24% | new | FIRST |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $402.0M | 4,928,111 | 0.02% | 2q | +2.6%+$10.1M |
| STATE STREET CORP | $375.1M | 4,598,952 | 0.01% | 31q | +5.8%+$20.6M |
| WELLINGTON MANAGEMENT GROUP LLP | $336.7M | 4,128,273 | 0.06% | 31q | +4.7%+$15.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $305.0M | 3,739,127 | 0.01% | 2q | +1.7%+$5.1M |
| GEODE CAPITAL MANAGEMENT, LLC | $180.1M | 2,207,376 | 0.01% | 31q | HELD |
| TORONTO DOMINION BANK | $176.7M | 2,165,846 | 0.20% | 7q | -28.4%-$70.2M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $159.6M | 1,956,156 | 0.52% | new | NEW |
| Hood River Capital Management LLC | $141.8M | 1,738,613 | 1.03% | 6q | +4.4%+$6.0M |
| ARMISTICE CAPITAL, LLC | $141.2M incl. $53.8M options CALL | 1,071,395 | 1.73% | 28q | -48.4%-$132.2M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $140.5M | 1,722,688 | 0.42% | new | NEW |
| D. E. Shaw & Co., Inc. | $126.3M | 1,548,919 | 0.06% | 31q | -5.6%-$7.5M |
| TANG CAPITAL MANAGEMENT LLC | $122.4M | 1,500,000 | 5.56% | 11q | HELD |
| BANK OF AMERICA CORP /DE/ | $118.5M | 1,452,277 | 0.01% | 31q | -23.0%-$35.4M |
| Driehaus Capital Management LLC | $117.5M | 1,440,107 | 0.68% | 7q | +41.8%+$34.6M |
| FMR LLC | $114.1M | 1,398,261 | 0.00% | 31q | -8.5%-$10.6M |
| Jefferies Financial Group Inc. | $110.7M | 1,357,042 | 0.73% | 4q | HELD |
| FULLER & THALER ASSET MANAGEMENT, INC. | $94.4M | 1,156,819 | 0.26% | new | NEW |
| Pictet Asset Management Holding SA | $93.6M | 1,147,844 | 0.09% | 12q | -3.0%-$2.9M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $90.9M | 1,114,516 | 0.01% | 31q | +134.6%+$52.2M |
| MORGAN STANLEY | $90.0M | 1,103,675 | 0.00% | 35q | +63.7%+$35.0M |
| Blue Sparrow, LLC /DE | $85.7M | 1,050,700 | 0.83% | 2q | +451.3%+$70.2M |
| FRANKLIN RESOURCES INC | $83.8M | 1,027,327 | 0.02% | 31q | -8.4%-$7.7M |
| Invesco Ltd. | $76.8M | 941,581 | 0.01% | 31q | +8.8%+$6.2M |
| Palo Alto Investors LP | $75.0M | 918,846 | 10.36% | 8q | HELD |
| NORTHERN TRUST CORP | $71.8M | 880,029 | 0.01% | 31q | +9.1%+$6.0M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $64.4M | 790,112 | 0.01% | 31q | +8.0%+$4.8M |
| CITADEL ADVISORS LLC | $62.5M incl. $1.5M options CALL+PUT | 747,822 | 0.01% | 31q | +94.1%+$30.3M |
| RENAISSANCE TECHNOLOGIES LLC | $59.0M | 723,500 | 0.08% | 12q | +35.7%+$15.5M |
| Boston Partners | $58.6M | 718,574 | 0.05% | 4q | +11.0%+$5.8M |
| JUPITER ASSET MANAGEMENT LTD | $57.7M | 707,450 | 0.29% | 3q | -0.6%-$326.9K |
| MARSHALL WACE, LLP | $57.5M | 704,787 | 0.05% | 6q | +53.0%+$19.9M |
| JPMORGAN CHASE & CO | $56.1M | 684,042 | 0.00% | 31q | +97.7%+$27.7M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $53.4M | 654,382 | 0.02% | 5q | +486.2%+$44.3M |
| DIMENSIONAL FUND ADVISORS LP | $52.0M | 637,704 | 0.01% | 7q | -28.4%-$20.6M |
| GOLDMAN SACHS GROUP INC | $50.4M | 618,247 | 0.00% | 31q | -25.3%-$17.1M |
| SG Americas Securities, LLC | $49.4M | 605,581 | 0.03% | 6q | -31.2%-$22.4M |
| LOOMIS SAYLES & CO L P | $48.2M | 590,374 | 0.06% | 2q | +19.6%+$7.9M |
| LORD, ABBETT & CO. LLC | $48.1M | 590,074 | 0.14% | 5q | -4.4%-$2.2M |
| VANGUARD FIDUCIARY TRUST CO | $48.0M | 587,887 | 0.01% | 2q | +6.2%+$2.8M |
| Nuveen, LLC | $47.6M | 583,829 | 0.01% | 6q | -12.5%-$6.8M |
| Bank of New York Mellon Corp | $45.1M | 553,462 | 0.01% | 31q | +5.9%+$2.5M |
| PRINCIPAL FINANCIAL GROUP INC | $44.2M | 541,635 | 0.02% | 31q | +5.2%+$2.2M |
| VOYA INVESTMENT MANAGEMENT LLC | $44.0M | 539,319 | 0.04% | 31q | +57.4%+$16.0M |
| Ensign Peak Advisors, Inc | $41.4M | 508,056 | 0.07% | 27q | -12.8%-$6.1M |
| AMERICAN CENTURY COMPANIES INC | $40.9M | 500,995 | 0.02% | 20q | +9913.9%+$40.5M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $40.8M incl. $8.5M options CALL+PUT | 395,662 | 0.00% | 31q | +90.3%+$19.4M |
| FEDERATED HERMES, INC. | $39.4M | 483,424 | 0.06% | 7q | +114.0%+$21.0M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $36.1M | 441,957 | 0.03% | 31q | +3.9%+$1.4M |
| Parkman Healthcare Partners LLC | $35.5M | 435,691 | 3.64% | 8q | +1.0%+$353.0K |
| Defilade Capital Management, L.P. | $35.4M | 433,699 | 4.74% | 2q | +15.3%+$4.7M |
| Russell Investments Group, Ltd. | $34.1M | 418,025 | 0.03% | 31q | +24.6%+$6.7M |
| BNP PARIBAS FINANCIAL MARKETS | $30.9M | 378,720 | 0.01% | 31q | -58.9%-$44.2M |
| Legal & General Group Plc | $28.8M | 352,734 | 0.01% | 31q | +2.7%+$763.0K |
| AQR CAPITAL MANAGEMENT LLC | $27.1M | 332,251 | 0.01% | 19q | -2.9%-$803.9K |
| Qube Research & Technologies Ltd | $25.4M | 311,374 | 0.02% | 2q | -39.4%-$16.5M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $24.8M | 303,685 | 0.02% | 31q | -2.6%-$662.8K |
| Rockefeller Capital Management L.P. | $24.7M | 302,393 | 0.04% | 21q | -21.4%-$6.7M |
| DEUTSCHE BANK AG\ | $24.2M | 296,899 | 0.01% | 34q | +24.4%+$4.7M |
| Public Sector Pension Investment Board | $23.2M | 285,023 | 0.06% | 3q | -14.1%-$3.8M |
| SEGALL BRYANT & HAMILL, LLC | $22.2M | 271,735 | 0.26% | 5q | +39.1%+$6.2M |
| UBS Group AG | $21.4M | 262,426 | 0.00% | 31q | -80.8%-$89.9M |
| Allianz Asset Management GmbH | $18.9M | 231,102 | 0.02% | 7q | +3023.0%+$18.2M |
| Boxer Capital Management, LLC | $16.3M | 200,000 | 1.23% | 4q | HELD |
| RHUMBLINE ADVISERS | $15.7M | 192,706 | 0.01% | 31q | -9.3%-$1.6M |
| PRUDENTIAL FINANCIAL INC | $15.2M | 185,820 | 0.02% | 8q | +12.9%+$1.7M |
| AMERIPRISE FINANCIAL INC | $14.0M | 171,874 | 0.00% | 18q | +3.1%+$425.4K |
| Rock Springs Capital Management LP | $13.2M | 162,298 | 0.65% | 3q | HELD |
| Hudson Bay Capital Management LP | $13.0M | 159,778 | 0.04% | 2q | +4253.6%+$12.7M |
| Schonfeld Strategic Advisors LLC | $12.0M | 147,425 | 0.04% | 2q | -53.7%-$13.9M |
| Swiss National Bank | $11.5M | 141,465 | 0.01% | 31q | -1.0%-$114.2K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $11.1M | 135,633 | 0.02% | 7q | +4.6%+$485.4K |
| HSBC HOLDINGS PLC | $10.8M | 131,389 | 0.00% | 24q | -42.1%-$7.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $10.3M | 126,011 | 0.00% | 31q | -0.7%-$77.7K |
| SEI INVESTMENTS CO | $10.2M | 125,434 | 0.01% | 7q | -3.7%-$389.1K |
| CITIGROUP INC | $9.7M | 118,656 | 0.00% | 31q | +435.8%+$7.9M |
| FIRST TRUST ADVISORS LP | $9.2M | 113,354 | 0.01% | 10q | -16.7%-$1.8M |
| Longaeva Partners L.P. | $9.1M | 111,803 | 0.20% | new | NEW |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $8.3M | 101,429 | 0.01% | 4q | -24.8%-$2.7M |
| SECTOR GAMMA AS | $8.2M | 100,000 | 1.77% | 7q | +33.3%+$2.0M |
| WCM INVESTMENT MANAGEMENT, LLC | $7.7M | 93,799 | 0.01% | 4q | -0.9%-$72.4K |
| PANAGORA ASSET MANAGEMENT INC | $7.3M | 88,956 | 0.02% | 31q | -74.7%-$21.4M |
| ALLIANCEBERNSTEIN L.P. | $7.2M | 105,937 | 0.00% | 31q | -30.4%-$3.2M |
| BESSEMER GROUP INC | $6.9M | 85,056 | 0.01% | 8q | +61.1%+$2.6M |
| Aquatic Capital Management LLC | $6.8M | 83,470 | 0.23% | 2q | +318.9%+$5.2M |
| WELLS FARGO & COMPANY/MN | $6.8M | 83,071 | 0.00% | 31q | +173.9%+$4.3M |
| XTX Topco Ltd | $6.7M | 81,923 | 0.09% | 2q | +422.7%+$5.4M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $6.7M | 81,733 | 0.01% | 31q | -3.1%-$211.0K |
| Empowered Funds, LLC | $6.6M | 81,271 | 0.03% | 6q | +40.3%+$1.9M |
| MOORE CAPITAL MANAGEMENT, LP | $6.2M | 75,588 | 0.09% | 2q | +69.1%+$2.5M |
| PINNACLE ASSOCIATES LTD | $5.7M | 70,435 | 0.06% | 31q | -6.0%-$368.8K |
| RAYMOND JAMES FINANCIAL INC | $5.7M | 69,660 | 0.00% | 7q | +32.8%+$1.4M |
| VANGUARD ASSET MANAGEMENT, Ltd | $5.6M | 68,828 | 0.00% | 2q | +5.6%+$295.9K |
| CANADA LIFE ASSURANCE Co | $5.2M | 64,112 | 0.01% | 27q | -1.9%-$103.2K |
| Capricorn Fund Managers Ltd | $5.2M | 63,900 | 0.41% | new | NEW |
| Caption Management, LLC | $4.9M CALL+PUT | options only | 0.02% | 5q | OPTIONS |
| BARCLAYS PLC | $4.8M | 58,370 | 0.00% | 31q | +10.0%+$431.6K |
| INTECH INVESTMENT MANAGEMENT LLC | $4.7M | 57,581 | 0.04% | 8q | +2.9%+$133.1K |
Showing the largest 100 of 388 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-08-28 | 2026-08-25 | Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-07 | Almstead Neil Gregory | CHIEF TECHNICAL OPS OFFICER | Sold | 24,613 | $2.2M ×3 |
| 2026-06-22 | Almstead Neil Gregory | CHIEF TECHNICAL OPS OFFICER | Sold | 23,749 | $1.9M ×2 |
| 2026-07-06 | Almstead Neil Gregory | CHIEF TECHNICAL OPS OFFICER | Sold | 22,161 | $1.9M ×5 |
| 2026-06-25 | Almstead Neil Gregory | CHIEF TECHNICAL OPS OFFICER | Sold | 20,960 | $1.8M ×5 |
| 2026-06-10 | Pauwels Eric | CHIEF BUSINESS OFFICER | Sold | 21,277 | $1.6M ×2 |
| 2026-06-17 | Utter Christine Marie | SVP, CHIEF ACCOUNTING OFFICER | Sold | 19,686 | $1.5M |
| 2026-07-09 | Smith Mary L. | Director | Sold | 15,834 | $1.4M ×2 |
| 2026-05-14 | Klein Matthew B. | CHIEF EXECUTIVE OFFICER | Sold | 12,572 | $917.2K ×4 |
| 2026-08-19 | SCHMERTZLER MICHAEL | Director | Sold | 12,500 | $916.6K ×2 |
| 2026-08-26 | SCHMERTZLER MICHAEL | Director | Sold | 12,500 | $911.7K ×2 |
| 2026-08-27 | SCHMERTZLER MICHAEL | Director | Sold | 12,500 | $894.8K ×2 |
| 2026-08-20 | SCHMERTZLER MICHAEL | Director | Sold | 12,500 | $888.9K ×3 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 78 | $35.4M | 546,354 | 13 | 21 | 25 | 0.0% |
| Q2 2026 | 388 | $8.3B | 100,550,709 | 73 | 141 | 112 | 1.0% |
| Q1 2026 | 356 | $6.6B | 95,550,913 | 54 | 140 | 97 | 1.1% |
| Q4 2025 | 356 | $7.1B | 92,750,723 | 85 | 124 | 94 | 0.6% |
| Q3 2025 | 297 | $5.2B | 83,173,896 | 54 | 96 | 103 | 1.2% |
| Q2 2025 | 285 | $4.0B | 80,652,501 | 59 | 108 | 78 | 0.5% |
| Q1 2025 | 261 | $4.1B | 78,877,478 | 47 | 84 | 88 | 0.7% |
| Q4 2024 | 242 | $3.5B | 77,765,358 | 51 | 74 | 75 | 1.1% |
| Q3 2024 | 204 | $3.0B | 79,371,847 | 30 | 67 | 68 | 0.3% |
| Q2 2024 | 201 | $2.5B | 80,516,095 | 43 | 75 | 60 | 0.5% |
| Q1 2024 | 186 | $2.6B | 90,013,941 | 31 | 51 | 64 | 0.9% |
| Q4 2023 | 176 | $2.4B | 86,573,676 | 20 | 70 | 53 | 0.6% |
| Q3 2023 | 183 | $1.9B | 81,705,504 | 22 | 77 | 56 | 1.0% |
| Q2 2023 | 207 | $3.3B | 81,086,664 | 30 | 80 | 65 | 0.7% |
| Q1 2023 | 206 | $4.3B | 88,087,577 | 32 | 76 | 70 | 0.6% |
| Q4 2022 | 204 | $3.0B | 76,881,328 | 33 | 60 | 79 | 0.7% |
| Q3 2022 | 204 | $6.6B | 129,902,251 | 44 | 66 | 56 | 0.3% |
| Q2 2022 | 179 | $5.1B | 125,864,151 | 28 | 53 | 65 | 0.3% |
| Q1 2022 | 174 | $4.7B | 126,119,637 | 29 | 58 | 50 | 0.1% |
| Q4 2021 | 172 | $5.4B | 134,881,843 | 18 | 50 | 56 | 0.1% |
| Q3 2021 | 181 | $5.1B | 136,252,389 | 18 | 60 | 49 | 0.2% |
| Q2 2021 | 183 | $5.7B | 135,183,793 | 18 | 74 | 52 | 0.3% |
| Q1 2021 | 205 | $6.4B | 134,365,349 | 28 | 74 | 71 | 0.2% |
| Q4 2020 | 213 | $5.7B | 92,660,345 | 34 | 63 | 77 | 0.3% |
| Q3 2020 | 195 | $7.2B | 151,903,912 | 21 | 62 | 72 | 0.4% |
| Q2 2020 | 203 | $7.5B | 147,156,669 | 28 | 86 | 59 | 0.7% |
| Q1 2020 | 200 | $5.0B | 109,888,118 | 31 | 80 | 66 | 1.4% |
| Q4 2019 | 208 | $8.2B | 168,425,852 | 45 | 65 | 60 | 1.2% |
| Q3 2019 | 187 | $5.7B | 164,711,026 | 34 | 64 | 56 | 1.2% |
| Q2 2019 | 176 | $9.1B | 205,332,631 | 28 | 61 | 56 | 0.5% |
| Q1 2019 | 177 | $6.6B | 175,931,065 | 31 | 73 | 39 | 0.3% |
| Q4 2018 | 164 | $2.2B | 64,204,582 | 1 | 4 | 1 | 1.2% |