Company · Ownership research

PTC THERAPEUTICS, INC. PTCT

CIK 0001070081 · CUSIP 69366J200

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 69366J200 (PTCT), not CUSIP 69366J900 (PTCT), CUSIP 69366J950 (PTCT), and does not merge CUSIPs.

This page lists the top 20 of 295 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$508.70M 8,288,999 shares	0.01%	-558.47K(-6.30%)Reduced	SEC filing ↗ Nov 7, 2025	▾
02	RTW INVESTMENTS, LP CIK 1493215 · View history	$475.40M 7,746,415 shares	5.86%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
03	BlackRock, Inc. CIK 2012383 · View history	$437.62M 7,130,807 shares	0.01%	-349.63K(-4.70%)Reduced	SEC filing ↗ Nov 12, 2025	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$301.86M 4,918,619 shares	0.05%	+224.48K(+4.80%)Added	SEC filing ↗ Nov 14, 2025	▾
05	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$231.69M 3,773,556 shares	0.11%	+598.54K(+18.90%)Added	SEC filing ↗ Nov 14, 2025	▾
06	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$201.13M 3,277,272 shares	6.31%	-1.46M(-30.80%)Reduced	SEC filing ↗ Nov 17, 2025	▾
07	TORONTO DOMINION BANK CIK 947263 · View history	$199.24M 3,246,525 shares	0.39%	+800.57K(+32.70%)Added	SEC filing ↗ Nov 14, 2025	▾
08	STATE STREET CORP CIK 93751 · View history	$192.38M 3,134,783 shares	0.01%	+138.33K(+4.60%)Added	SEC filing ↗ Nov 14, 2025	▾
09	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$133.46M 2,174,608 shares	0.11%	-263.09K(-10.80%)Reduced	SEC filing ↗ Nov 14, 2025	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$119.74M 1,950,878 shares	0.01%	+16.29K(+0.80%)Added	SEC filing ↗ Nov 12, 2025	▾
11	CITADEL ADVISORS LLC CIK 1423053 · View history	$106.23M 1,731,025 shares	0.09%	+810.53K(+88.10%)Added	SEC filing ↗ Nov 14, 2025	▾
12	FMR LLC CIK 315066 · View history	$98.91M 1,611,775 shares	0.01%	-106.51K(-6.20%)Reduced	SEC filing ↗ Nov 13, 2025	▾
13	Jefferies Financial Group Inc. CIK 96223 · View history	$97.25M 1,584,678 shares	0.89%	+1.58MNew	SEC filing ↗ Nov 13, 2025	▾
14	BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history	$93.10M 1,517,036 shares	0.01%	+135.63K(+9.80%)Added	SEC filing ↗ Feb 3, 2026	▾
15	TANG CAPITAL MANAGEMENT LLC CIK 1232621 · View history	$92.06M 1,500,000 shares	3.54%	+400.00K(+36.40%)Added	SEC filing ↗ Nov 14, 2025	▾
16	Pictet Asset Management Holding SA CIK 1993888 · View history	$86.21M 1,407,974 shares	0.08%	+366.54K(+35.20%)Added	SEC filing ↗ Nov 18, 2025	▾
17	Point72 Asset Management, L.P. CIK 1603466 · View history	$74.91M 1,220,642 shares	0.16%	+1.22MNew	SEC filing ↗ Nov 14, 2025	▾
18	FRANKLIN RESOURCES INC CIK 38777 · View history	$71.01M 1,157,034 shares	0.02%	-117.73K(-9.20%)Reduced	SEC filing ↗ Nov 13, 2025	▾
19	Driehaus Capital Management LLC CIK 938206 · View history	$69.46M 1,131,749 shares	0.50%	+72.72K(+6.90%)Added	SEC filing ↗ Nov 14, 2025	▾
20	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$64.84M 1,056,481 shares	0.05%	+672.08K(+174.80%)Added	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 295 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

295

Cancelled or null records excluded

Disclosed shares

82,682,610

Not deduplicated across managers

Disclosed value

$5.07B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

PTC THERAPEUTICS, INC. · Q3 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.