PTC THERAPEUTICS, INC.

PTCTNASDAQ

$63.65+0.19 (+0.30% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

PTC THERAPEUTICS, INC. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-1.8%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	16.76%	$1.14B	0.02%	Not reported
RTW Investments, LP	9.30%	$632M	5.39%	Not reported
Jupiter Topco LLC	8.68%	$590M	0.24%	Not reported
Vanguard Portfolio Management LLC	5.91%	$402M	0.02%	Not reported
State Street Corp	5.52%	$375M	0.01%	Not reported
Wellington Management Group LLP	4.95%	$337M	0.06%	Add 4.71%
Vanguard Capital Management LLC	4.49%	$305M	0.01%	Not reported
Geode Capital Management, LLC	2.65%	$180M	0.01%	Not reported
Toronto Dominion Bank	2.60%	$177M	0.20%	Not reported
Westfield Capital Management Co LP	2.35%	$160M	0.52%	New Not reported
Hood River Capital Management LLC	2.09%	$142M	1.03%	Add 4.45%
William Blair Investment Management, LLC	2.07%	$141M	0.42%	New Not reported
D. E. Shaw & Co., Inc.	1.86%	$126M	0.06%	Not reported
Tang Capital Management LLC	1.80%	$122M	5.56%	Not reported
Bank of America Corp	1.74%	$118M	0.01%	Not reported
Driehaus Capital Management LLC	1.73%	$117M	0.68%	Add 41.77%
FMR LLC	1.68%	$114M	0.01%	Not reported
Jefferies Financial Group Inc.	1.63%	$111M	0.73%	Add 0.19%
Fuller & Thaler Asset Management, Inc.	1.39%	$94.4M	0.26%	Not reported
Pictet Asset Management Holding SA	1.38%	$93.6M	0.09%	Reduce 3.03%
Morgan Stanley	1.32%	$90M	0.00%	Not reported
Armistice Capital, LLC	1.29%	$87.4M	1.07%	Not reported
Blue Sparrow, LLC	1.26%	$85.7M	0.83%	Add 451.26%
Invesco Ltd.	1.13%	$76.8M	0.01%	Not reported
Palo Alto Investors LP	1.10%	$75M	10.36%	Reduce 0.30%
Northern Trust Corp	1.06%	$71.8M	0.01%	Not reported
Charles Schwab Investment Management Inc	0.95%	$64.4M	0.01%	Not reported
Citadel Advisors LLC	0.90%	$61M	0.01%	Not reported
Renaissance Technologies LLC	0.87%	$59M	0.08%	Not reported
Jupiter Asset Management Ltd	0.85%	$57.7M	0.29%	Reduce 0.56%
Marshall Wace, LLP	0.85%	$57.5M	0.05%	Not reported
JPMorgan Chase & Co	0.82%	$56.1M	0.00%	Not reported
Arrowstreet Capital, Limited Partnership	0.79%	$53.4M	0.02%	Not reported
Dimensional Fund Advisors LP	0.77%	$52M	0.01%	Not reported
Goldman Sachs Group Inc	0.74%	$50.4M	0.00%	Not reported
SG Americas Securities, LLC	0.73%	$49.4M	0.03%	Not reported
Loomis Sayles & Co L P	0.71%	$48.2M	0.06%	Add 19.61%
Lord, Abbett & Co. LLC	0.71%	$48.1M	0.14%	Reduce 4.38%
Vanguard Fiduciary Trust Co	0.71%	$48M	0.01%	Not reported
Nuveen, LLC	0.70%	$47.6M	0.01%	Not reported
Bank of New York Mellon Corp	0.66%	$45.1M	0.01%	Not reported
Principal Financial Group Inc	0.65%	$44.2M	0.02%	Not reported
Voya Investment Management LLC	0.65%	$44M	0.04%	Not reported
Ensign Peak Advisors, Inc	0.61%	$41.4M	0.07%	Reduce 12.75%
American Century Companies Inc	0.60%	$40.9M	0.02%	Not reported
Federated Hermes, Inc.	0.58%	$39.4M	0.06%	Not reported
Manufacturers Life Insurance Company, the	0.53%	$36.1M	0.03%	Not reported
Parkman Healthcare Partners LLC	0.52%	$35.5M	3.64%	Add 1.00%
Defilade Capital Management, L.P.	0.52%	$35.4M	4.74%	Add 15.29%
Russell Investments Group, Ltd.	0.50%	$34.1M	0.03%	Not reported

50 of 359 holders

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