PTC Therapeutics Ownership | Who Owns PTC Therapeutics?

Overview Forecast RevenueFinancials Chart Transcripts

PTC Therapeutics Ownership Summary

PTC Therapeutics is owned by 46.08% institutional investors, 2.59% insiders, and 51.32% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.68% of PTCT shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.87% of its assets in PTC Therapeutics shares.

PTCT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PTC Therapeutics	46.08%	2.59%	51.32%
Sector	Healthcare Stocks	232.01%	10.74%	-142.75%
Industry	Biotech Stocks	381.47%	10.55%	-292.02%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	12.78M	15.68%	$970.70M
Vanguard group	8.80M	10.80%	$668.69M
Blackrock	7.77M	10.16%	$237.67M
Rtw investments, lp	7.75M	9.91%	$475.40M
Wellington management group llp	4.92M	6.29%	$301.86M
Cowen and company	3.76M	4.91%	$114.87M
Armistice capital	3.28M	4.19%	$201.13M
Toronto dominion bank	3.25M	4.15%	$199.24M
State street	3.13M	4.01%	$192.38M
Janus henderson group	2.33M	3.02%	$105.02M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Palo alto investors lp	862.61K	9.80%	$52.94M
Rtw investments, lp	7.75M	5.86%	$475.40M
Bioimpact capital	438.48K	4.41%	$26.91M
Boxer capital management	200.00K	3.91%	$12.27M
Tang capital management	1.50M	3.54%	$92.06M
Cowen and company	3.76M	3.16%	$114.87M
Armistice capital	3.28M	2.98%	$201.13M
Ikarian capital	280.55K	1.74%	$17.22M
Parkman healthcare partners	202.36K	1.30%	$12.42M
Sector gamma as	61.92K	1.07%	$4.70M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock funding, inc. /de	12.78M	0.02%	5.65M
Point72 asset management	1.22M	0.13%	1.22M
Bnp paribas arbitrage, snc	828.66K	0.03%	808.51K
Toronto dominion bank	3.25M	0.31%	800.57K
Sg americas securities	894.46K	0.09%	764.36K

Top Sellers

Holder	Shares	% Assets	Change
Camber capital management lp	-	-	-1.50M
Armistice capital	3.28M	2.98%	-1.46M
Blackstone	-	-	-1.06M
Pacer advisors	-	-	-503.97K
Pictet asset management sa	978.96K	0.07%	-429.02K

New Positions

Holder	Shares	% Assets	Change	Value
Boston partners	361.66K	0.02%	361.66K	$22.20M
Ikarian capital	280.55K	1.74%	280.55K	$17.22M
Boxer capital management	200.00K	3.91%	200.00K	$12.27M
Boothbay fund management	110.63K	0.10%	110.63K	$6.79M
Woodline partners lp	105.61K	0.03%	105.61K	$6.48M

Sold Out

Holder	Change
Elequin securities	-2.00
Skopos labs	-4.00
Jpl wealth management	-5.00
Bear mountain capital	-8.00
Twin peaks wealth advisors	-9.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	4.86M	5.87%	4.86M
Vanguard US Total Market Shares ETF	2.41M	3.06%	2.85K
Vanguard Total Stock Mkt Idx Inv	2.51M	3.04%	5.91K
iShares Russell 2000 ETF	1.87M	2.26%	361.60K
Vanguard Small Cap Index	1.82M	2.20%	-296.00
Vanguard Health Care Inv	1.78M	2.15%	-760.38K
State Street® SPDR® S&P® Biotech ETF	1.35M	1.64%	-7.24K
SPDR® S&P Biotech ETF	1.19M	1.50%	2.65K
Vanguard Small Cap Growth Index Inv	1.01M	1.22%	-14.97K
Hartford MidCap Y	808.97K	1.05%	-805.13K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Mar 10, 2026	Okey Stephanie	-	Sell	$980.00K
Mar 05, 2026	Okey Stephanie	-	Sell	$401.39K
Mar 05, 2026	Golden Lee Scott	EVP & CHIEF MEDICAL OFFICER	Sell	$633.80K
Mar 05, 2026	Almstead Neil Gregory	CHIEF TECHNICAL OPS OFFICER	Sell	$252.82K
Feb 19, 2026	Boulding Mark Elliott	EXEC. VP AND CLO	Sell	$14.53K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	60
2025 Q4	-	89
2025 Q3	-	17
2025 Q2	-	4
2025 Q1	-	45

PTCT Ownership FAQ

Who Owns PTC Therapeutics?

PTC Therapeutics shareholders are primarily institutional investors at 46.08%, followed by 2.59% insiders and 51.33% retail investors. The average institutional ownership in PTC Therapeutics's industry, Biotech Stocks , is 381.47%, which PTC Therapeutics falls below.

Who owns the most shares of PTC Therapeutics?

PTC Therapeutics’s largest shareholders are Blackrock funding, inc. /de (12.78M shares, 15.68%), Vanguard group (8.8M shares, 10.80%), and Blackrock (7.77M shares, 10.16%). Together, they hold 36.64% 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 9.80% of its assets in 862.61K PTC Therapeutics shares, valued at 52.94M$.

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 5.87% of its total shares outstanding invested in 4.86M 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