Assertio Holdings, Inc. (ASRT) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

6,220,215Shares Outstanding

0Shares held by institutions

$0Value of institutional holdings

31.98%Institutional ownership %

0.00%Shares Changed QoQ

52No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Assertio Holdings, Inc. (NASDAQ:ASRT) currently has 52 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

Assertio Holdings saw its institutional ownership percentage fell to 32.0% in December 2025 from 405.6% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by nan%, with a year-over-year a decrease of 36.59% in the count of filers.
Among the 52 institutional holders of Assertio Holdings, 52 added to their stakes while 0 trimmed their positions and 0 held steady.
Collectively, institutional investors increased their stake in Assertio Holdings to 1.99Mn shares as of December 2025, a change that is up by 1.99Mn shares quarter on quarter and down 25.87Mn shares year over year.
Nantahala Capital Management, LLC continues to be the largest institutional holder of Assertio Holdings as of December 31, 2025, with a position of 587.34K shares, representing 9.44% of the company's outstanding stock.
Among the most significant buyers of Assertio Holdings during December 2025 were Nantahala Capital Management, LLC (587.34K), VANGUARD GROUP INC (297.25K), Opaleye Management Inc. (285.00K), RENAISSANCE TECHNOLOGIES LLC (190.70K), EDGEWOOD MANAGEMENT LLC (107.52K).
The top 10 institutional holders of Assertio Holdings for the quarter ending December 2025 included Nantahala Capital Management, LLC (587.34K), VANGUARD GROUP INC (297.25K), Opaleye Management Inc. (285.00K), RENAISSANCE TECHNOLOGIES LLC (190.70K), EDGEWOOD MANAGEMENT LLC (107.52K), BlackRock, Inc. (90.03K), GEODE CAPITAL MANAGEMENT, LLC (69.06K), CM Management, LLC (50.00K), CITADEL ADVISORS LLC (44.71K), MILLENNIUM MANAGEMENT LLC (34.48K).

52 Institutional Holders

0 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Nantahala Capital Management, LLC	31 Dec, 2025	587,335	587,335	0.00%	$5,327,128.00
VANGUARD GROUP INC	31 Dec, 2025	297,247	297,247	0.00%	$2,696,031.00
Opaleye Management Inc.	31 Dec, 2025	285,000	285,000	0.00%	$2,584,950.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	190,697	190,697	0.00%	$1,729,622.00
EDGEWOOD MANAGEMENT LLC	31 Dec, 2025	107,518	107,518	0.00%	$975,189.00
BlackRock, Inc.	31 Dec, 2025	90,034	90,034	0.00%	$816,608.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	69,065	69,065	0.00%	$626,638.00
CM Management, LLC	31 Dec, 2025	50,000	50,000	0.00%	$453,500.00
CITADEL ADVISORS LLC	31 Dec, 2025	44,706	44,706	0.00%	$405,483.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	34,478	34,478	0.00%	$312,715.00
STATE STREET CORP	31 Dec, 2025	25,672	25,672	0.00%	$232,845.00
MORGAN STANLEY	31 Dec, 2025	25,345	25,345	0.00%	$229,883.00
TSP Capital Management Group, LLC	31 Dec, 2025	25,056	25,056	0.00%	$227,257.00
TWO SIGMA ADVISERS, LP	31 Dec, 2025	21,213	21,213	0.00%	$192,402.00
Rothschild Wealth LLC	31 Dec, 2025	19,000	19,000	0.00%	$172,330.00
PERRITT CAPITAL MANAGEMENT INC	31 Dec, 2025	19,000	19,000	0.00%	$172,330.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	18,670	18,670	0.00%	$169,337.00
BRIDGEWAY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	14,955	14,955	0.00%	$135,639.00
Empowered Funds, LLC	31 Dec, 2025	14,955	14,955	0.00%	$135,639.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	14,172	14,172	0.00%	$128,540.00

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