Assertio Ownership | Who Owns Assertio?
Assertio Ownership Summary
Assertio is owned by 26.21% institutional investors, 2.50% insiders, and 71.29% retail investors. Nantahala capital management is the largest institutional shareholder, holding 9.18% 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 | 26.21% | 2.50% | 71.29% |
| Sector | Healthcare Stocks | 42.54% | 10.82% | 46.64% |
| Industry | Specialty & Generic Drug Manufacturers Stocks | 26.16% | 11.89% | 61.94% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Nantahala capital management | 8.81M | 9.18% | $7.76M |
| Vanguard group | 4.43M | 4.61% | $3.90M |
| Renaissance | 2.94M | 3.07% | $2.59M |
| Blackrock | 1.39M | 1.46% | $1.72M |
| Blackrock funding, inc. /de | 1.36M | 1.42% | $1.20M |
| Millennium management | 1.10M | 1.16% | $959.32K |
| Geode capital management | 1.02M | 1.07% | $900.75K |
| Aqr capital management | 902.57K | 0.95% | $786.23K |
| Cm management | 724.38K | 0.75% | $638.04M |
| Morgan stanley | 597.59K | 0.62% | $526.35K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Cm management | 724.38K | 0.53% | $638.04M |
| Nantahala capital management | 8.81M | 0.27% | $7.76M |
| Perritt capital management | 350.32K | 0.15% | $308.56K |
| Tsp capital management group | 316.88K | 0.07% | $279.10K |
| Gsa capital partners llp | 381.58K | 0.03% | $336.00K |
| Summit wealth group llc / | 11.67K | 0.01% | $29.87K |
| Mindset wealth management | 36.56K | 0.01% | $32.20K |
| Williams & novak | 10.00K | 0.01% | $8.81K |
| Bridgeway capital management | 224.32K | 0.00% | $197.58K |
| Renaissance | 2.94M | 0.00% | $2.59M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Gsa capital partners llp | 381.58K | 0.03% | 321.58K |
| Morgan stanley | 597.59K | - | 159.09K |
| Renaissance | 2.94M | 0.00% | 120.14K |
| Mariner | 80.50K | 0.00% | 80.50K |
| Vanguard group | 4.43M | 0.00% | 41.33K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 1.39M | - | -4.96M |
| Cowen and company | - | - | -1.58M |
| Russell investments group | - | - | -424.06K |
| Aqr capital management | 902.57K | 0.00% | -357.66K |
| Bank of new york mellon | - | - | -289.30K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Mariner | 80.50K | 0.00% | 80.50K | $70.90K |
| Virtu financial | 29.43K | 0.00% | 29.43K | $26.00K |
| Summit wealth group llc / | 11.67K | 0.01% | 11.67K | $29.87K |
| Macquarie group | 4.70K | - | 4.70K | $5.83K |
| Financial management professionals | 1.07K | 0.00% | 1.07K | $942.00 |
Sold Out
| Holder | Change |
|---|---|
| National bank of canada /fi/ | -1.00 |
| Ameritas advisory services | -1.00 |
| Larson financial group | -9.00 |
| 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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Sep 30, 2024 | 90 | -15.09% | 29,713,763 | -17.46% | 31 | 2.17% | 31 | -34.04% | 29 | -9.38% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 3.01M | 3.15% | - |
| Vanguard Total Stock Mkt Idx Inv | 2.86M | 2.98% | -62.61K |
| Vanguard Institutional Extnd Mkt Idx Tr | 898.26K | 0.93% | -409.31K |
| Invesco FTSE RAFI US 1500 Small-Mid ETF | 563.12K | 0.59% | - |
| Fidelity Extended Market Index | 512.33K | 0.53% | -4.21K |
| 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 |
| Perritt MicroCap Opportunities Investor | 266.25K | 0.28% | -17.75K |
| Invesco RAFI US 1500 Small-Mid ETF | 264.90K | 0.28% | - |
| Vifag 2002 SICAV | 253.57K | 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 |
|---|---|---|
| 2025 Q4 | - | 1 |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q4 | 2 | - |
| 2024 Q2 | 2 | - |
ASRT Ownership FAQ
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