Assertio Ownership | Who Owns Assertio?

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Assertio Ownership Summary

Assertio is owned by 14.18% institutional investors, 2.52% insiders, and 83.29% retail investors. Edgewood management is the largest institutional shareholder, holding 1.68% of ASRT shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.15% of its assets in Assertio shares.

ASRT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Assertio	14.18%	2.52%	83.29%
Sector	Healthcare Stocks	232.64%	10.66%	-143.30%
Industry	Specialty & Generic Drug Manufacturers Stocks	20.25%	11.78%	67.97%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Edgewood management	107.52K	1.68%	$975.19K
Blackrock	1.39M	1.46%	$1.72M
Millennium management	1.10M	1.16%	$959.32K
Aqr capital management	902.57K	0.95%	$786.23K
Two sigma advisers, lp	427.53K	0.45%	$376.57K
Two sigma investments, lp	371.43K	0.39%	$327.15K
Perritt capital management	350.32K	0.36%	$308.56K
Bridgeway capital management	224.32K	0.23%	$197.58K
Northern trust	178.86K	0.19%	$157.54K
Invesco	133.61K	0.14%	$117.68K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Perritt capital management	350.32K	0.15%	$308.56K
Thurston, springer, miller, herd & titak	4.50K	0.01%	$40.80K
Edgewood management	107.52K	0.00%	$975.19K
Bridgeway capital management	224.32K	0.00%	$197.58K
Sonora investment management group	44.73K	0.00%	$39.40K
Virtu financial	29.43K	0.00%	$26.00K
Aqr capital management	902.57K	0.00%	$786.23K
Strategic investment solutions, inc. /il	5.25K	0.00%	$3.37K
Two sigma advisers, lp	427.53K	0.00%	$376.57K
Millennium management	1.10M	0.00%	$959.32K

Top Buyers

Holder	Shares	% Assets	Change
Edgewood management	107.52K	0.00%	107.52K
Virtu financial	29.43K	0.00%	29.43K
Gts securities	33.00K	0.00%	15.40K
Macquarie group	4.70K	-	4.70K
Thurston, springer, miller, herd & titak	4.50K	0.01%	4.50K

Top Sellers

Holder	Shares	% Assets	Change
Nantahala capital management	-	-	-8.81M
Blackrock	1.39M	-	-4.96M
Vanguard group	-	-	-4.43M
Renaissance	-	-	-2.94M
Cowen and company	-	-	-1.58M

New Positions

Holder	Shares	% Assets	Change	Value
Edgewood management	107.52K	0.00%	107.52K	$975.19K
Virtu financial	29.43K	0.00%	29.43K	$26.00K
Macquarie group	4.70K	-	4.70K	$5.83K
Thurston, springer, miller, herd & titak	4.50K	0.01%	4.50K	$40.80K
Acadian asset management	1.81K	-	1.81K	$16.00K

Sold Out

Holder	Change
National bank of canada /fi/	-1.00
Ameritas advisory services	-1.00
Barclays	-4.00
Nelson, van denburg & campbell wealth management group	-14.00
Cbiz investment advisory services	-17.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	31	-56.94%	909,957	-96.39%	14	2.07%	5	-78.26%	26	44.44%
Sep 30, 2025	67	-10.67%	25,155,736	0.40%	26	3.85%	22	10.00%	18	-21.74%
Jun 30, 2025	73	1.39%	25,057,180	-1.35%	26	3.70%	19	35.71%	23	-25.81%
Mar 31, 2025	72	-18.18%	25,399,588	-9.04%	26	3.10%	16	-57.89%	29	26.09%
Dec 31, 2024	88	-2.22%	27,922,810	-6.03%	29	3.02%	38	26.67%	23	-20.69%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	3.01M	3.15%	-
Vanguard Total Stock Mkt Idx Inv	190.40K	2.96%	-
Vanguard Institutional Extnd Mkt Idx Tr	62.64K	0.98%	-
Invesco FTSE RAFI US 1500 Small-Mid ETF	563.12K	0.59%	-
Fidelity Extended Market Index	33.41K	0.52%	-140.00
Russell Inv Tax-Managed US Mid&Sm Cap S	424.06K	0.44%	-
NT R2000 Value Index Fund - NL	283.43K	0.30%	22.32K
Invesco RAFI US 1500 Small-Mid ETF	264.90K	0.28%	-
Vifag 2002 SICAV	253.57K	0.26%	-
Blackrock Extended Mkt Fund CF	16.46K	0.26%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 10, 2025	Stark David Matthew	-	Sell	$6.81K
Nov 18, 2024	Mason Heather L	-	Buy	$60.00K
Nov 14, 2024	O'Grady Brendan P.	CEO	Buy	$9.95K
Jun 11, 2024	Vacirca Jeff L	-	Buy	$11.10K
Jun 05, 2024	Mason Heather L	Interim Executive Officer	Buy	$24.25K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	-
2025 Q4	-	1
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	2	-

ASRT Ownership FAQ

Who Owns Assertio?

Assertio shareholders are primarily institutional investors at 14.18%, followed by 2.52% insiders and 83.30% retail investors. The average institutional ownership in Assertio's industry, Specialty & Generic Drug Manufacturers Stocks, is 20.25%, which Assertio falls below.

Who owns the most shares of Assertio?

Assertio’s largest shareholders are Edgewood management (107.52K shares, 1.68%), Blackrock (1.39M shares, 1.46%), and Millennium management (1.1M shares, 1.16%). Together, they hold 4.29% of Assertio’s total shares outstanding.

Does Blackrock own Assertio?

Yes, BlackRock owns 1.46% of Assertio, totaling 1.39M shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 1.72M$. In the last quarter, BlackRock decreased its holdings by -4.965M shares, a -78.17% change.

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

Perritt capital management is Assertio’s biggest shareholder by percentage of total assets invested, with 0.15% of its assets in 350.32K Assertio shares, valued at 308.56K$.

Who is the top mutual fund holder of Assertio shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Assertio shares, with 3.15% of its total shares outstanding invested in 3.01M Assertio shares.

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