Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ASRT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Nantahala Capital Management, LLC | 692K | $13.2M | +17.9% | 10.714% | 0.68% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 269K | $5.1M | β | 4.162% | 0.00% |
| 3 | Opaleye Management Inc. | 266K | $5.1M | -6.8% | 4.112% | 0.67% |
| 4 | RENAISSANCE TECHNOLOGIES LLC | 229K | $4.4M | +19.9% | 3.537% | 0.01% |
| 5 | EDGEWOOD MANAGEMENT LLC | 108K | $2.0M | 0.0% | 1.664% | 0.01% |
| 6 | BlackRock, Inc. | 90K | $1.7M | 0.0% | 1.393% | 0.00% |
| 7 | JANE STREET GROUP, LLC | 79K | $1.5M | +570.9% | 1.229% | 0.01% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 76K | $1.5M | +10.5% | 1.181% | 0.00% |
| 9 | CITADEL ADVISORS LLC | 75K | $1.4M | β | 1.154% | 0.00% |
| 10 | Walleye Capital LLC | 66K | $1.3M | β | 1.020% | 0.01% |
| 11 | SEI INVESTMENTS CO | 55K | $1.0M | β | 0.850% | 0.00% |
| 12 | Huntleigh Advisors, Inc. | 53K | $1.0M | β | 0.814% | 0.17% |
| 13 | EAM Investors, LLC | 45K | $860K | β | 0.699% | 0.10% |
| 14 | MARSHALL WACE, LLP | 41K | $777K | β | 0.631% | 0.00% |
| 15 | CM Management, LLC | 35K | $667K | -30.0% | 0.542% | 0.56% |
| 16 | VANGUARD FIDUCIARY TRUST CO | 34K | $655K | β | 0.532% | 0.00% |
| 17 | TWO SIGMA INVESTMENTS, LP | 34K | $640K | +79.8% | 0.520% | 0.00% |
| 18 | STATE STREET CORP | 28K | $529K | +8.2% | 0.430% | 0.00% |
| 19 | CORSAIR CAPITAL MANAGEMENT, L.P. | 26K | $487K | β | 0.395% | 0.07% |
| 20 | TSP Capital Management Group, LLC | 25K | $478K | 0.0% | 0.388% | 0.12% |
| 21 | BANK OF AMERICA CORP /DE/ | 25K | $477K | +6505.0% | 0.387% | 0.00% |
| 22 | MORGAN STANLEY | 21K | $401K | -17.0% | 0.325% | 0.00% |
| 23 | Quadrature Capital Ltd | 19K | $356K | β | 0.289% | 0.00% |
| 24 | Squarepoint Ops LLC | 18K | $341K | β | 0.277% | 0.00% |
| 25 | MILLENNIUM MANAGEMENT LLC | 16K | $313K | -52.4% | 0.254% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in ASRT β a direct measure of their conviction.
Filings activity in ASRT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 63 | +21% | 31.59% | +20.09 pp | $48M | +175% |
| Q4 2025 | 52 | 21% | 11.50% | 3.18 pp | $17M | 22% |
| Q3 2025 | 66 | 9.6% | 14.68% | +3.91 pp | $22M | +36% |
| Q2 2025 | 73 | +7.4% | 10.77% | 0.67 pp | $16M | 5.9% |
| Q1 2025 | 68 | 18% | 11.44% | 19.55 pp | $17M | 63% |
| Q4 2024 | 83 | 4.6% | 30.99% | +7.54 pp | $47M | +32% |
| Q3 2024 | 87 | 15% | 23.45% | 6.12 pp | $36M | 21% |
| Q2 2024 | 102 | β | 29.57% | β | $45M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying ASRT stock.
Based on Q1 2026 13F filings, institutional ownership of Assertio Holdings, Inc. stands at 31.6%, held across 63 reporting institutions.
Nantahala Capital Management, LLC is the largest reported institutional holder of ASRT, with approximately 692,335 shares worth $0.01B as of Q1 2026.
Yes β 5 widely-followed marquee investors appear among the top 25 institutional holders of ASRT, including RENAISSANCE TECHNOLOGIES LLC, JANE STREET GROUP, LLC, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for ASRT is 82 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
23 institutions opened new positions in ASRT during Q1 2026, while 12 fully exited. 38 added to existing positions and 2 trimmed.
ASRT institutional ownership rose by 20.09 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 77.5% of all reported 13F value in ASRT, and the top 25 account for 96.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Assertio Holdings, Inc. (ASRT) Institutional Ownership