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 204 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

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	$338.54M 9,125,134 shares	0.01%	+151.36K(+1.70%)Added	SEC filing ↗ Nov 13, 2024	▾
02	BlackRock, Inc. CIK 2012383 · View history	$296.18M 7,983,213 shares	0.01%	—	SEC filing ↗ Nov 13, 2024	▾
03	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$292.82M 7,892,799 shares	0.05%	-315.81K(-3.80%)Reduced	SEC filing ↗ Nov 14, 2024	▾
04	RTW INVESTMENTS, LP CIK 1493215 · View history	$274.29M 7,393,127 shares	3.97%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
05	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$268.41M 7,234,898 shares	7.02%	+272.67K(+3.90%)Added	SEC filing ↗ Nov 14, 2024	▾
06	COWEN AND COMPANY, LLC CIK 48966 · View history	$133.21M 3,590,655 shares	4.60%	-165.81K(-4.40%)Reduced	SEC filing ↗ Nov 12, 2024	▾
07	Camber Capital Management LP CIK 1444043 · View history	$129.85M 3,500,000 shares	5.04%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
08	STATE STREET CORP CIK 93751 · View history	$107.55M 2,899,040 shares	0.00%	+149.70K(+5.40%)Added	SEC filing ↗ Nov 14, 2024	▾
09	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$69.39M 1,870,217 shares	0.04%	-1.11M(-37.30%)Reduced	SEC filing ↗ Nov 14, 2024	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$66.74M 1,798,666 shares	0.01%	+10.89K(+0.60%)Added	SEC filing ↗ Nov 12, 2024	▾
11	FRANKLIN RESOURCES INC CIK 38777 · Amended · View history	$55.15M 1,409,014 shares	0.02%	-61.34K(-4.20%)Reduced	SEC filing ↗ Nov 27, 2024	▾
12	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$55.14M 1,486,297 shares	0.21%	-229.49K(-13.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
13	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$52.66M 1,419,539 shares	0.07%	+61.90K(+4.60%)Added	SEC filing ↗ Nov 14, 2024	▾
14	MORGAN STANLEY CIK 895421 · Amended · View history	$42.96M 1,158,054 shares	0.00%	-358.70K(-23.60%)Reduced	SEC filing ↗ May 14, 2025	▾
15	Blackstone Inc. CIK 1393818 · View history	$40.64M 1,095,290 shares	0.18%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
16	FMR LLC CIK 315066 · View history	$39.22M 1,057,182 shares	0.00%	-46.92K(-4.20%)Reduced	SEC filing ↗ Nov 13, 2024	▾
17	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$30.51M 822,441 shares	0.01%	+31.28K(+4.00%)Added	SEC filing ↗ Nov 14, 2024	▾
18	Nuveen Asset Management, LLC CIK 1521019 · View history	$29.83M 804,156 shares	0.01%	+117.63K(+17.10%)Added	SEC filing ↗ Nov 14, 2024	▾
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$26.22M 706,730 shares	0.01%	+47.90K(+7.30%)Added	SEC filing ↗ Nov 12, 2024	▾
20	TANG CAPITAL MANAGEMENT LLC CIK 1232621 · View history	$25.97M 700,000 shares	1.86%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾

Showing 20 / 204 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

204

Cancelled or null records excluded

Disclosed shares

78,809,094

Not deduplicated across managers

Disclosed value

$2.93B

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 2024

Explore all 204 reporting institutions.

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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.