Institutional shares held 80.1 Million
255K calls
151K puts
Total value of holdings $4.2B
$13.4M calls
$7.91M puts
Market Cap $4.15B
71,541,000 Shares Out.
Institutional ownership 111.97%
# of Institutions 308


Latest Institutional Activity in PTCT

Top Purchases

Q2 2025
D. E. Shaw & Co., Inc. Shares Held: 2.44M ($141M)
Q2 2025
Bank Of America Corp Shares Held: 1.38M ($80.1M)
Q2 2025
Pacer Advisors, Inc. Shares Held: 741K ($43M)
Q2 2025
Hood River Capital Management LLC Shares Held: 637K ($36.9M)
Q2 2025
State Street Corp Shares Held: 3M ($174M)

Top Sells

Q2 2025
Wellington Management Group LLP Shares Held: 4.69M ($272M)
Q2 2025
Armistice Capital, LLC Shares Held: 4.74M ($275M)
Q2 2025
Ubs Group Ag Shares Held: 579K ($33.6M)
Q2 2025
Driehaus Capital Management LLC Shares Held: 1.06M ($61.4M)
Q2 2025
Citadel Advisors LLC Shares Held: 920K ($53.4M)

About PTCT

PTC Therapeutics, Inc., a biopharmaceutical company, focuses on the discovery, development, and commercialization of medicines to patients with rare disorders. Its portfolio pipeline includes commercial products and product candidates in various stages of development, including clinical, pre-clinical and research and discovery stages, focuses on the development of treatments for multiple therapeutic areas, such as rare diseases. The company offers Translarna and Emflaza for the treatment of Duchenne muscular dystrophy in the European Economic Area and the United States, as well as to treat nonsense mutation Duchenne muscular dystrophy in Brazil and Russia; commercializes Tegsedi and Waylivra for the treatment of rare diseases in Latin America and the Caribbean; and markets Evrysdi for the treatment of spinal muscular atrophy in adults and children two months and older in Brazil. The company's splicing platform includes PTC518, which is being developed for the treatment of Huntington's disease. PTC Therapeutics, Inc. has collaborations with F. Hoffman-La Roche Ltd and Hoffman-La Roche Inc., as well as the Spinal Muscular Atrophy Foundation to advance drug discovery and development research in regenerative medicine; and Akcea Therapeutics, Inc. to commercialize Tegsedi and Waylivra for the treatment of rare diseases in Latin America and the Caribbean. PTC Therapeutics, Inc. was incorporated in 1998 and is headquartered in South Plainfield, New Jersey.


Insider Transactions at PTCT

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
607K Shares
From 20 Insiders
Grant, award, or other acquisition 301K shares
Exercise of conversion of derivative security 306K shares
Sell / Disposition
392K Shares
From 10 Insiders
Open market or private sale 392K shares

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