PTC Therapeutics Ownership | Who Owns PTC Therapeutics?

Overview Forecast RevenueFinancials Chart Transcripts

PTC Therapeutics Ownership Summary

PTC Therapeutics is owned by 122.39% institutional investors, 7.39% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 16.92% of PTCT shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.05% of its assets in PTC Therapeutics shares.

PTCT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PTC Therapeutics	122.39%	7.39%	-29.77%
Sector	Healthcare Stocks	244.59%	12.11%	-156.70%
Industry	Biotech Stocks	379.61%	11.70%	-291.31%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	13.96M	16.92%	$1.14B
Vanguard group	8.80M	10.80%	$668.69M
Blackrock	7.77M	10.16%	$237.67M
Rtw investments, lp	7.75M	9.39%	$631.88M
Janus henderson group	7.19M	8.91%	$490.00M
State street	4.60M	5.57%	$375.14M
Wellington management group llp	4.13M	5.00%	$336.74M
Cowen and company	3.76M	4.91%	$114.87M
Vanguard capital management	3.74M	4.53%	$305.00M
Geode capital management	2.21M	2.67%	$180.09M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Palo alto investors lp	918.85K	10.36%	$74.95M
Tang capital management	1.50M	5.56%	$122.36M
Rtw investments, lp	7.75M	5.39%	$631.88M
Parkman healthcare partners	435.69K	3.64%	$35.54M
Cowen and company	3.76M	3.16%	$114.87M
Sector gamma as	100.00K	1.77%	$8.16M
Boxer capital management	200.00K	1.23%	$16.31M
Armistice capital	1.07M	1.07%	$87.39M
Hood river capital management	1.74M	1.03%	$141.82M
Driehaus capital management	1.44M	0.68%	$117.47M

Top Buyers

Holder	Shares	% Assets	Change
Janus henderson group	7.19M	0.24%	2.34M
Westfield capital management co lp	1.96M	0.52%	1.96M
William blair investment management	1.72M	0.42%	1.72M
Fuller & thaler asset management	1.16M	0.26%	1.16M
Blackrock funding, inc. /de	13.96M	0.02%	1.02M

Top Sellers

Holder	Shares	% Assets	Change
Camber capital management lp	-	-	-1.50M
Point72 asset management	-	-	-1.13M
Ubs group	262.43K	0.00%	-1.10M
Armistice capital	1.07M	1.07%	-1.00M
Toronto dominion bank	2.17M	0.20%	-860.12K

New Positions

Holder	Shares	% Assets	Change	Value
Westfield capital management co lp	1.96M	0.52%	1.96M	$159.56M
William blair investment management	1.72M	0.42%	1.72M	$140.52M
Fuller & thaler asset management	1.16M	0.26%	1.16M	$94.36M
Sixth street partners management company	790.11K	0.01%	790.11K	$64.45M
Longaeva partners	111.80K	0.20%	111.80K	$9.12M

Sold Out

Holder	Change
Curio wealth	-1.00
Signature resources capital management	-2.00
Larson financial group	-3.00
Assetmark	-3.00
Skopos labs	-4.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	388	8.08%	100,994,884	5.76%	122	0.87%	216	4.35%	113	11.88%
Mar 31, 2026	352	-2.49%	93,508,088	0.87%	115	0.90%	204	-8.52%	99	2.06%
Dec 31, 2025	193	-37.34%	37,555,520	-54.62%	46	0.41%	123	-24.07%	48	-52.00%
Sep 30, 2025	151	-46.83%	25,008,417	-66.16%	32	0.36%	72	-55.00%	56	-30.00%
Jun 30, 2025	291	8.18%	79,867,386	1.38%	102	1.00%	164	19.71%	82	-11.83%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	5.05M	6.05%	-1.05K
Vanguard Morn Total Stk Mkt Idx Investor	2.64M	3.18%	-7.87K
Vanguard Total Stock Mkt Idx Inv	2.64M	3.18%	-7.87K
Vanguard MStar Total Stk Mkt Idx Invest	2.64M	3.17%	8.39K
Vanguard US Total Market Shares ETF	2.41M	3.06%	2.85K
iShares Russell 2000 ETF	2.10M	2.52%	-37.25K
Vanguard Health Care Inv	2.05M	2.47%	9.63K
Vanguard Small Cap Index	1.91M	2.29%	4.89K
State Street® SPDR® S&P® Biotech ETF	1.33M	1.60%	3.06K
SPDR® S&P Biotech ETF	1.19M	1.50%	2.65K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 27, 2026	SCHMERTZLER MICHAEL	-	Sell	$850.73K
Aug 27, 2026	SCHMERTZLER MICHAEL	-	Sell	$44.05K
Aug 26, 2026	SCHMERTZLER MICHAEL	-	Sell	$500.01K
Aug 26, 2026	SCHMERTZLER MICHAEL	-	Sell	$411.71K
Aug 19, 2026	SCHMERTZLER MICHAEL	-	Sell	$527.85K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	30
2026 Q2	-	35
2026 Q1	-	61
2025 Q4	-	89
2025 Q3	-	17

PTCT Ownership FAQ

Who Owns PTC Therapeutics?

PTC Therapeutics shareholders are primarily institutional investors at 122.39%, followed by 7.39% insiders and -29.78% retail investors. The average institutional ownership in PTC Therapeutics's industry, Biotech Stocks , is 379.61%, which PTC Therapeutics falls below.

Who owns the most shares of PTC Therapeutics?

PTC Therapeutics’s largest shareholders are Blackrock funding, inc. /de (13.96M shares, 16.92%), Vanguard group (8.8M shares, 10.80%), and Blackrock (7.77M shares, 10.16%). Together, they hold 37.88% 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?

Palo alto investors lp is PTC Therapeutics’s biggest shareholder by percentage of total assets invested, with 10.36% of its assets in 918.85K PTC Therapeutics shares, valued at 74.95M$.

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

iShares Core S&P Small-Cap ETF is the top mutual fund holder of PTC Therapeutics shares, with 6.05% of its total shares outstanding invested in 5.05M PTC Therapeutics shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools