PTCTPTC Therapeutics, Inc.

$72.72

Who owns PTCT

343 institutions reported holding PTCT for 2026Q1, together 116% of the company, fewer than the 344 a quarter earlier.

343

Institutions reporting a position · as of 2026Q1 · down from 344 the quarter before

Shares held by institutions
95.3M

Shares held by institutions · 116% of the company · long US equity positions only, as reported on Form 13F

Reported value
$6.51B

Reported value · at 2026-03-31 prices, not today's

Opened vs closed
53 / 58

Opened vs closed · new positions against positions exited in the latest quarter

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
53
Positions exited
58
Added to
136
Reduced
90
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q134395.3M$6.51B
2025Q434492.4M$7.02B
2025Q328982.5M$5.07B
2025Q228079.8M$3.90B
2025Q125878.6M$4.02B
2024Q423777.6M$3.50B
2024Q320078.7M$2.92B
2024Q219679.7M$2.44B
2024Q118183.8M$2.44B
2023Q417284.6M$2.34B
2023Q317781.1M$1.82B
2023Q220181.0M$3.30B
2023Q119878.3M$3.79B
2022Q420076.6M$2.93B
2022Q321076.2M$3.83B
2022Q217874.1M$2.97B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.12.9Mn/a$882M
VANGUARD GROUP INC9.2Mn/a$624M
RTW INVESTMENTS, LP7.7Mn/a$528M
HENDERSON GROUP PLC7.2Mn/a$490M
STATE STREET CORP4.3Mn/a$296M
WELLINGTON MANAGEMENT GROUP LLP3.9Mn/a$269M
TORONTO DOMINION BANK3.0Mn/a$206M
GEODE CAPITAL MANAGEMENT LLC2.2Mn/a$151M
ARMISTICE CAPITAL, LLC2.1Mn/a$141M
BANK OF AMERICA CORP /DE/1.9Mn/a$129M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

reading the register…