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PTC Therapeutics (PTCT)
NASDAQ
$70.22+$0.40 (+0.58%)
Price as of Aug 21, 2026 7:32 PM EDT- $5.8BMarket Cap
- 38.07%1-Year Change
- BiotechnologyIndustry
PTC Therapeutics (PTCT)
$70.22+$0.40 (+0.58%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 16.73% | 14.0M | +1.0M (+7.27%) | Jun 30, 2026 |
VANGUARD GROUP INC | 10.55% | 8.8M | +514,204 (+5.84%) | Dec 31, 2025 |
WELLINGTON MANAGEMENT CO LLP | 9.77% | 8.2M | -611,780 (-7.50%) | Dec 31, 2021 |
BLACKROCK FUNDING, INC. /DE | 9.46% | 7.9M | -84,412 (-1.07%) | Dec 31, 2024 |
BLACKROCK INC. | 9.31% | 7.8M | +207,054 (+2.66%) | Jun 30, 2024 |
RTW INVESTMENTS, LP | 9.28% | 7.7M | 0 (0.00%) | Jun 30, 2026 |
N/A | 8.67% | 7.2M | +7.2M (+100.00%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
Franklin Investors Securities Trust | 57.51% | 48.0M | 0 (0.00%) | Apr 30, 2026 |
AQR Funds | 9.41% | 7.8M | 0 (0.00%) | Mar 31, 2026 |
Virtus Strategy Trust | 8.18% | 6.8M | 0 (0.00%) | Sep 30, 2025 |
VANGUARD INDEX FUNDS | 7.80% | 6.5M | +282,456 (+4.34%) | Mar 31, 2026 |
LORD ABBETT INVESTMENT TRUST | 4.01% | 3.3M | 0 (0.00%) | May 31, 2026 |
RUSSELL INVESTMENT CO | 3.86% | 3.2M | 0 (0.00%) | Apr 30, 2026 |
SPDR SERIES TRUST | 2.95% | 2.5M | 0 (0.00%) | Apr 30, 2026 |
Current Ownership Distribution
- Institutions1.6B (58.63%)
- Mutual Funds1.1B (41.14%)
- Insiders6.0M (0.23%)
- Other0 (0.00%)
Insider Transactions
- 0.23% (6.0M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 14Number of InsiderSelling (last 12 months)
- $1.6BAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
SCHMERTZLER MICHAEL | Sell | Aug 20, 2026 | $666,676.82 | 9,419 | $70.78 | 1.4M |
SCHMERTZLER MICHAEL | Sell | Aug 20, 2026 | $171,793.20 | 2,390 | $71.88 | 1.4M |
SCHMERTZLER MICHAEL | Sell | Aug 20, 2026 | $50,387.72 | 691 | $72.92 | 1.4M |
SCHMERTZLER MICHAEL | Sell | Aug 19, 2026 | $388,708.10 | 5,335 | $72.86 | 1.4M |
SCHMERTZLER MICHAEL | Sell | Aug 19, 2026 | $527,845.55 | 7,165 | $73.67 | 1.4M |
Boulding Mark Elliott EXEC. VP AND CLO | Exempt | Aug 17, 2026 | $0.00 | 2,813 | $0.00 | 16,876 |
Boulding Mark Elliott EXEC. VP AND CLO | Exempt | Aug 17, 2026 | $72,265.97 | 2,813 | $25.69 | 108,085 |
Boulding Mark Elliott EXEC. VP AND CLO | Sell | Aug 17, 2026 | $133,487.16 | 1,844 | $72.39 | 106,241 |
Boulding Mark Elliott EXEC. VP AND CLO | Sell | Aug 17, 2026 | $70,640.10 | 969 | $72.90 | 105,272 |
Klein Matthew B. CHIEF EXECUTIVE OFFICER | Sell | Aug 04, 2026 | $705,722.44 | 10,292 | $68.57 | 383,868 |
Sollie-Zetlmayer Hege Elisabeth | Award | Jul 28, 2026 | $0.00 | 3,475 | $0.00 | 3,475 |
Sollie-Zetlmayer Hege Elisabeth | Award | Jul 28, 2026 | $0.00 | 1,738 | $0.00 | 1,738 |
Sollie-Zetlmayer Hege Elisabeth | Award | Jul 28, 2026 | $0.00 | 4,000 | $0.00 | 50,526 |
Sollie-Zetlmayer Hege Elisabeth | Award | Jul 28, 2026 | $0.00 | 2,000 | $0.00 | 52,526 |
Gravier Pierre CHIEF FINANCIAL OFFICER | Sell | Jul 14, 2026 | $280,742.90 | 3,494 | $80.35 | 83,986 |
Smith Mary L. | Exempt | Jul 09, 2026 | $0.00 | 10,000 | $0.00 | 0 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Exempt | Jul 09, 2026 | $0.00 | 2,464 | $0.00 | 45,036 |
Smith Mary L. | Exempt | Jul 09, 2026 | $0.00 | 5,834 | $0.00 | 0 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Exempt | Jul 09, 2026 | $114,674.56 | 2,464 | $46.54 | 62,763 |
Smith Mary L. | Exempt | Jul 09, 2026 | $429,500.00 | 10,000 | $42.95 | 31,813 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Sell | Jul 09, 2026 | $222,376.00 | 2,464 | $90.25 | 60,299 |
Smith Mary L. | Sell | Jul 09, 2026 | $900,000.00 | 10,000 | $90.00 | 21,813 |
Smith Mary L. | Exempt | Jul 09, 2026 | $250,570.30 | 5,834 | $42.95 | 27,647 |
Smith Mary L. | Sell | Jul 09, 2026 | $525,060.00 | 5,834 | $90.00 | 21,813 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Exempt | Jul 07, 2026 | $0.00 | 24,613 | $0.00 | 9,063 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Exempt | Jul 07, 2026 | $970,244.46 | 24,613 | $39.42 | 84,912 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Sell | Jul 07, 2026 | $344,844.52 | 3,956 | $87.17 | 80,956 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Sell | Jul 07, 2026 | $1.0M | 11,369 | $89.03 | 69,587 |
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER | Sell | Jul 07, 2026 | $830,718.72 | 9,288 | $89.44 | 60,299 |
Boulding Mark Elliott EXEC. VP AND CLO | Exempt | Jul 06, 2026 | $0.00 | 2,226 | $0.00 | 4,532 |