PTC Therapeutics Ownership | Who Owns PTC Therapeutics?

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PTC Therapeutics Ownership Summary

PTC Therapeutics is owned by 14.23% institutional investors, 2.42% insiders, and 83.35% retail investors. Vanguard group is the largest institutional shareholder, holding 11.93% of PTCT shares. Vanguard Health Care Inv is the top mutual fund, with 4.17% of its assets in PTC Therapeutics shares.

PTCT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PTC Therapeutics	14.23%	2.42%	83.35%
Sector	Healthcare Stocks	279.18%	10.62%	-189.80%
Industry	Biotech Stocks	63.96%	10.74%	25.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	9.18M	11.93%	$414.33M
Blackrock funding, inc. /de	7.90M	10.27%	$356.55M
Blackrock	7.77M	10.16%	$237.67M
Rtw investments, lp	7.48M	9.58%	$381.34M
Armistice capital	6.38M	8.29%	$287.90M
Wellington management group llp	4.79M	6.22%	$216.09M
Cowen and company	3.76M	4.91%	$114.87M
Toronto dominion bank	3.29M	4.27%	$148.36M
Camber capital management lp	3.20M	4.16%	$144.45M
State street	2.75M	3.59%	$84.07M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Rtw investments, lp	7.48M	5.83%	$381.34M
Armistice capital	6.38M	3.93%	$287.90M
Palo alto investors lp	404.20K	3.92%	$20.60M
Bioimpact capital	439.98K	3.85%	$22.42M
Camber capital management lp	3.20M	3.34%	$144.45M
Cowen and company	3.76M	3.16%	$114.87M
Tang capital management	700.00K	2.09%	$31.60M
Sofinnova investments	579.34K	1.93%	$29.52M
Parkman healthcare partners	177.37K	1.07%	$8.01M
Sector gamma as	65.25K	1.01%	$2.95M

Top Buyers

Holder	Shares	% Assets	Change
Toronto dominion bank	3.29M	0.23%	3.29M
Ubs group	1.07M	0.01%	905.98K
Point72 asset management	1.44M	0.14%	867.50K
Sofinnova investments	579.34K	1.93%	579.34K
Driehaus capital management	1.51M	0.74%	471.59K

Top Sellers

Holder	Shares	% Assets	Change
Wellington management group llp	4.79M	0.04%	-3.11M
State street	2.75M	0.00%	-1.36M
Blackstone	-	-	-1.06M
Armistice capital	6.38M	3.93%	-856.90K
Morgan stanley	1.52M	0.00%	-546.28K

New Positions

Holder	Shares	% Assets	Change	Value
Toronto dominion bank	3.29M	0.23%	3.29M	$148.36M
Sofinnova investments	579.34K	1.93%	579.34K	$29.52M
Dimensional fund advisors lp	105.05K	0.00%	105.05K	$4.74M
Integral health asset management	100.00K	0.54%	100.00K	$5.10M
Hood river capital management	84.37K	0.07%	84.37K	$4.30M

Sold Out

Holder	Change
Elequin securities	-2.00
Nelson, van denburg & campbell wealth management group	-14.00
Ronald blue trust	-17.00
Byrne asset management	-25.00
Federation des caisses desjardins du quebec	-30.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	15	-93.90%	11,112,579	-85.70%	14	0.14%	11	-91.91%	2	-97.33%
Dec 31, 2024	111	-47.39%	31,159,665	-60.47%	40	0.39%	60	-38.14%	33	-54.79%
Sep 30, 2024	211	3.43%	78,815,809	-1.28%	102	0.94%	97	-21.77%	73	19.67%
Jun 30, 2024	204	6.81%	79,836,937	-6.22%	104	0.84%	124	45.88%	61	-11.59%
Mar 31, 2024	191	6.11%	85,134,817	0.70%	111	0.87%	85	-13.27%	69	23.21%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Health Care Inv	3.30M	4.17%	503.90K
Vanguard Total Stock Mkt Idx Inv	2.47M	3.11%	45.13K
Vanguard US Total Market Shares ETF	2.41M	3.06%	2.85K
iShares Russell 2000 ETF	1.95M	2.46%	957.00
Vanguard Small Cap Index	1.94M	2.44%	10.95K
Vanguard Institutional Extnd Mkt Idx Tr	1.19M	1.50%	6.43K
Vanguard Small Cap Growth Index Inv	1.08M	1.36%	-813.00
Hartford MidCap Y	808.97K	1.05%	-805.13K
Fidelity Small Cap Index	759.93K	0.96%	5.49K
Franklin Biotechnology Discv A(acc)USD	748.23K	0.94%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 15, 2025	Boulding Mark Elliott	EXEC. VP AND CLO	Sell	$89.08K
May 16, 2025	Boulding Mark Elliott	EXEC. VP AND CLO	Sell	$40.64K
Apr 22, 2025	Klein Matthew B.	CHIEF EXECUTIVE OFFICER	Sell	$136.66K
Apr 02, 2025	Golden Lee Scott	EVP & CHIEF MEDICAL OFFICER	Sell	$42.11K
Mar 14, 2025	Pauwels Eric	CHIEF BUSINESS OFFICER	Sell	$246.04K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	2
2025 Q1	-	45
2024 Q4	-	23
2024 Q3	-	1
2024 Q2	-	6

PTCT Ownership FAQ

Who Owns PTC Therapeutics?

PTC Therapeutics shareholders are primarily institutional investors at 14.23%, followed by 2.42% insiders and 83.35% retail investors. The average institutional ownership in PTC Therapeutics's industry, Biotech Stocks , is 63.96%, which PTC Therapeutics falls below.

Who owns the most shares of PTC Therapeutics?

PTC Therapeutics’s largest shareholders are Vanguard group (9.18M shares, 11.93%), Blackrock funding, inc. /de (7.9M shares, 10.27%), and Blackrock (7.77M shares, 10.16%). Together, they hold 32.36% of PTC Therapeutics’s total shares outstanding.

Does Blackrock own PTC Therapeutics?

Yes, BlackRock owns 10.16% of PTC Therapeutics, totaling 7.77M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 237.67M$. In the last quarter, BlackRock increased its holdings by 207.05K shares, a 2.74% change.

Who is PTC Therapeutics’s biggest shareholder by percentage of total assets invested?

Rtw investments, lp is PTC Therapeutics’s biggest shareholder by percentage of total assets invested, with 5.83% of its assets in 7.48M PTC Therapeutics shares, valued at 381.34M$.

Who is the top mutual fund holder of PTC Therapeutics shares?

Vanguard Health Care Inv is the top mutual fund holder of PTC Therapeutics shares, with 4.17% of its total shares outstanding invested in 3.3M PTC Therapeutics shares.

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