PTC THERAPEUTICS INC (PTCT): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in PTCT · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
24
13F filers
Aggregate Value
$547.1M
Across holders
Last Price
$71.06
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity13 increased10 reduced1 exited
Full exits: Woodline Partners LP
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 1.55M | $126.3M | 23.1% | 0.1% | Reduced | $-16.1M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 748K | $61.0M | 11.1% | 0.0% | Added | +$58.2M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 724K | $59.0M | 10.8% | 0.1% | Added | +$15.5M | Q2 2026 |
| JUPITER ASSET MANAGEMENT LTD CIK 0001215838 | Hedge Fund | 707K | $57.7M | 10.5% | 0.3% | Reduced | $-40.5M | Q2 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 705K | $57.5M | 10.5% | 0.0% | Added | $-17.7M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 654K | $53.4M | 9.8% | 0.0% | Added | +$44.3M | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 332K | $27.1M | 5.0% | 0.0% | Reduced | +$27.1M | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 311K | $25.4M | 4.6% | 0.0% | Reduced | $-16.5M | Q2 2026 |
| Rockefeller Capital Management L.P. CIK 0001739439 | Hedge Fund | 302K | $24.7M | 4.5% | 0.0% | Reduced | $-68.9M | Q2 2026 |
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 160K | $13.0M | 2.4% | 0.0% | Added | +$12.7M | Q2 2026 |
Reduced
Hedge Fund
$126.3M· 23.1% of total· 0.1% port· 1.55M sh· $-16.1M QoQ· Q2 2026
Added
Hedge Fund
$61.0M· 11.1% of total· 0.0% port· 748K sh· +$58.2M QoQ· Q2 2026
Added
Hedge Fund
$59.0M· 10.8% of total· 0.1% port· 724K sh· +$15.5M QoQ· Q2 2026
Reduced
Hedge Fund
$57.7M· 10.5% of total· 0.3% port· 707K sh· $-40.5M QoQ· Q2 2026
Added
Hedge Fund
$57.5M· 10.5% of total· 0.0% port· 705K sh· $-17.7M QoQ· Q2 2026
Added
Hedge Fund
$53.4M· 9.8% of total· 0.0% port· 654K sh· +$44.3M QoQ· Q2 2026
Reduced
Hedge Fund
$27.1M· 5.0% of total· 0.0% port· 332K sh· +$27.1M QoQ· Q2 2026
Reduced
Hedge Fund
$25.4M· 4.6% of total· 0.0% port· 311K sh· $-16.5M QoQ· Q2 2026
Reduced
Hedge Fund
$24.7M· 4.5% of total· 0.0% port· 302K sh· $-68.9M QoQ· Q2 2026
Added
Hedge Fund
$13.0M· 2.4% of total· 0.0% port· 160K sh· +$12.7M QoQ· Q2 2026
Reduced
Hedge Fund
$12.0M· 2.2% of total· 0.0% port· 147K sh· $-13.9M QoQ· Q2 2026
Added
Hedge Fund
$6.2M· 1.1% of total· 0.1% port· 76K sh· +$2.5M QoQ· Q2 2026
Added
Hedge Fund
$4.7M· 0.9% of total· 0.0% port· 57K sh· — QoQ· Q2 2026
Unchanged
Hedge Fund
$4.0M· 0.7% of total· 0.1% port· 49K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$3.8M· 0.7% of total· 0.0% port· 46K sh· — QoQ· Q2 2026
Reduced
Institutional Manager
$3.3M· 0.6% of total· 0.0% port· 41K sh· $-312K QoQ· Q2 2026
Reduced
Hedge Fund
$1.7M· 0.3% of total· 0.0% port· 21K sh· $-35.9M QoQ· Q2 2026
Added
Hedge Fund
$1.6M· 0.3% of total· 0.0% port· 20K sh· — QoQ· Q2 2026
Added
Hedge Fund
$1.2M· 0.2% of total· 0.0% port· 15K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$1.1M· 0.2% of total· 0.0% port· 14K sh· $-2.3M QoQ· Q2 2026
Added
Hedge Fund
$914K· 0.2% of total· 0.0% port· 11K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$869K· 0.2% of total· 0.0% port· 11K sh· $-1.3M QoQ· Q2 2026
Added
Hedge Fund
$480K· 0.1% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
Added
Hedge Fund
$104K· 0.0% of total· 0.0% port· 1K sh· — QoQ· Q2 2026
1–10 of 24
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