Security record · archived quarter
PTCT
PTC Therapeutics, Inc. · Healthcare · Biotechnology
17Tracked holders
0Δ holders
34.63MShares held
$1.69BReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -1.0% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 115 | +8 | 58.79M | $4.78B | +13 | −5 |
| Q1 2026 | 110 | -8 | 65.31M | $4.45B | +9 | −18 |
| Q4 2025 | 117 | 0 | 67.93M | $5.16B | +1 | — |
| Q3 2025 | 22 | +2 | 38.04M | $2.33B | +2 | — |
| Q2 2025 | 17 | 0 | 34.63M | $1.69B | +1 | −1 |
| Q1 2025 | 14 | +2 | 16.93M | $862.87M | +2 | — |
| Q4 2024 | 12 | 0 | 14.84M | $670.12M | — | — |
| Q3 2024 | 11 | -2 | 14.00M | $519.42M | — | −2 |
| Q2 2024 | 13 | — | 14.28M | $436.54M | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 8.85M | — | $432.11M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 8.85M | — | $432.11M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 8.85M | — | $432.11M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 8.85M | — | $432.11M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 8.85M | — | $432.11M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 7.48M | — | $365.34M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 25 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 26 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 27 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 28 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 29 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 30 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 31 | Wellington Management ✦ | 4.69M | -13.4% | $229.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 32 | State Street Global Advisors ✦ (passive) | 3.00M | +22.1% | $146.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 33 | D. E. Shaw & Co. ✦ | 2.44M | +68.7% | $119.06M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 34 | D. E. Shaw & Co. ✦ | 2.44M | +68.7% | $119.06M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 35 | D. E. Shaw & Co. ✦ | 2.44M | +68.7% | $119.06M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 36 | Geode Capital Management ✦ (passive) | 1.93M | +3.2% | $94.50M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 37 | Geode Capital Management ✦ (passive) | 1.93M | +3.2% | $94.50M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 38 | Fidelity (FMR) ✦ | 1.72M | — | $83.92M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Fidelity (FMR) ✦ | 1.72M | — | $83.92M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Fidelity (FMR) ✦ | 1.72M | — | $83.92M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Fidelity (FMR) ✦ | 1.72M | — | $83.92M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Fidelity (FMR) ✦ | 1.72M | — | $83.92M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Renaissance Technologies ✦ | 963.30K | +43.7% | $47.05M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 44 | Citadel Advisors ✦ | 920.49K | -21.2% | $44.96M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | Adage Capital Partners ✦ | 605.90K | +1.8% | $29.59M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 46 | Marshall Wace ✦ | 537.78K | -27.4% | $26.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Marshall Wace ✦ | 537.78K | -27.4% | $26.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Marshall Wace ✦ | 537.78K | -27.4% | $26.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 49 | AQR Capital Management ✦ | 537.12K | +30.1% | $26.23M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 50 | AQR Capital Management ✦ | 537.12K | +30.1% | $26.23M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 51 | AQR Capital Management ✦ | 537.12K | +30.1% | $26.23M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 52 | AQR Capital Management ✦ | 537.12K | +30.1% | $26.23M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 53 | AQR Capital Management ✦ | 537.12K | +30.1% | $26.23M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 54 | T. Rowe Price ✦ | 453.60K | -3.2% | $22.16M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 55 | T. Rowe Price ✦ | 453.60K | -3.2% | $22.16M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 56 | Millennium Management ✦ | 384.40K | +71.0% | $18.77M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 57 | Millennium Management ✦ | 384.40K | +71.0% | $18.77M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 58 | Two Sigma Investments ✦ | 50.85K | -36.5% | $2.48M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 59 | Gotham Asset Management ✦ | 35.63K | +642.3% | $1.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 60 | Arrowstreet Capital ✦ | 34.00K | New | $1.66M | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $1.66M | 0.0% |
Exited
| Point72 Asset Management | $70.00M | was 0.2% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 4.16M shares, $5.53M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 20
SCHMERTZLER MICHAEL
Director · 2.39K sh · $171,793
Aug 20
SCHMERTZLER MICHAEL
Director · 691 sh · $50,388
Aug 20
SCHMERTZLER MICHAEL
Director · 9.42K sh · $666,677
Aug 19
SCHMERTZLER MICHAEL
Director · 7.17K sh · $527,846
Aug 19
SCHMERTZLER MICHAEL
Director · 5.33K sh · $388,708
Aug 17
Boulding Mark Elliott
Officer · 969 sh · $70,640
Aug 17
Boulding Mark Elliott
Officer · 1.84K sh · $133,487
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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