Supernus Pharmaceuticals, Inc. (SUPN) Ownership
SUPN ownership summary
as of October 18, 2026- Institutions
- 106.0% of shares outstanding
- Insiders
- 4.32% of shares outstanding
- Shares outstanding
- 58.2M
- Float
- 51.7M shares available to trade
- Short interest
- 10.49% 5.0M shares short
- Days to cover
- 7.89 short interest down 0.1% vs prior month
- Institutions 105.98%
- Insiders 4.32%
SUPN top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 16.06% | 9.4M | $354.2M | +552,792 (+6.3%) | June 30, 2026 |
| 2 | Millennium Management LLC | 6.62% | 3.9M | $146.0M | +537,239 (+16.2%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 5.68% | 3.3M | $125.2M | +66,736 (+2.1%) | June 30, 2026 |
| 4 | Armistice Capital, LLC | 4.54% | 2.6M | $100.2M | +750,854 (+39.6%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 4.32% | 2.5M | $95.3M | +49,506 (+2.0%) | June 30, 2026 |
| 6 | State Street Corp | 4.22% | 2.5M | $93.2M | +171,701 (+7.5%) | June 30, 2026 |
| 7 | Delaware Management Holdings Inc | 4.08% | 2.4M | $90.1M | +341,127 (+16.7%) | June 30, 2026 |
| 8 | Dimensional Fund Advisors, Inc. | 3.57% | 2.1M | $78.7M | −228,940 (−9.9%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.70% | 1.6M | $59.5M | −53,426 (−3.3%) | June 30, 2026 |
| 10 | Stephens Inv Mgmt Group LLC | 2.55% | 1.5M | $56.3M | +134,490 (+10.0%) | June 30, 2026 |
| 11 | Renaissance Technologies Corp | 2.54% | 1.5M | $56.0M | −227,042 (−13.3%) | June 30, 2026 |
| 12 | Loomis, Sayles & Company LP | 2.53% | 1.5M | $55.9M | +49,413 (+3.5%) | June 30, 2026 |
| 13 | Citadel Advisors Llc | 2.36% | 1.4M | $52.0M | −119,464 (−8.0%) | June 30, 2026 |
| 14 | Two Sigma Investments LLC | 2.03% | 1.2M | $44.9M | +913,150 (+336.7%) | June 30, 2026 |
| 15 | GW&K Investment Management, LLC | 1.78% | 1.0M | $39.3M | −17,942 (−1.7%) | June 30, 2026 |
| 16 | Sofinnova Ventures | 1.78% | 1.0M | $39.3M | +82,019 (+8.6%) | June 30, 2026 |
| 17 | Qube Research & Technologies | 1.58% | 922K | $34.9M | +423,968 (+85.1%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 1.51% | 877K | $33.2M | −37,052 (−4.1%) | June 30, 2026 |
| 19 | The Goldman Sachs Group Inc | 1.41% | 819K | $31.0M | −37,055 (−4.3%) | June 30, 2026 |
| 20 | D. E. Shaw & Co LP | 1.32% | 768K | $29.1M | +145,218 (+23.3%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 4.2M shares and 7 cut 721K.
SUPN top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.94% | 3.5M | $131.1M | +813 (+0.0%) | September 30, 2026 |
| 2 | Nomura Small Cap Core I | 3.29% | 1.9M | $72.6M | — | August 31, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 3.02% | 1.8M | $66.5M | −3,304 (−0.2%) | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 2.48% | 1.4M | $54.8M | −16,640 (−1.1%) | September 30, 2026 |
| 5 | Vanguard Small Cap Index | 2.14% | 1.2M | $47.1M | −23,241 (−1.8%) | September 30, 2026 |
| 6 | Vanguard MStar Small Cap Value Index | 1.39% | 809K | $30.6M | +3,338 (+0.4%) | September 30, 2026 |
| 7 | Vanguard Explorer Inv | 1.36% | 792K | $30.0M | +66,604 (+9.2%) | June 30, 2026 |
| 8 | Fidelity Small Cap Index | 1.05% | 613K | $23.2M | +5,491 (+0.9%) | July 31, 2026 |
| 9 | State Street SPDR Port S&P 600 Sm CpETF | 0.91% | 528K | $20.0M | — | September 30, 2026 |
| 10 | Loomis Sayles Small Cap Growth Instl | 0.91% | 527K | $20.0M | +35,666 (+7.3%) | August 31, 2026 |
| 11 | iShares Russell 2000 Value ETF | 0.83% | 482K | $18.3M | +730 (+0.2%) | September 30, 2026 |
| 12 | DFA US Targeted Value I | 0.65% | 379K | $14.3M | — | August 31, 2026 |
| 13 | Vanguard Tax-Managed Small Cap Adm | 0.64% | 375K | $14.2M | — | September 30, 2026 |
| 14 | iShares S&P Small-Cap 600 Growth ETF | 0.64% | 372K | $14.1M | — | September 30, 2026 |
| 15 | International Biotechnology Ord | 0.63% | 368K | $13.9M | — | September 30, 2026 |
| 16 | Strategic Advisers U.S. Total Stock | 0.63% | 365K | $13.8M | +64,400 (+21.4%) | August 31, 2026 |
| 17 | Vanguard Russell 2000 ETF | 0.56% | 326K | $12.4M | +3,651 (+1.1%) | September 30, 2026 |
| 18 | Schwab US Small-Cap ETF™ | 0.53% | 306K | $11.6M | +198 (+0.1%) | September 30, 2026 |
| 19 | Fidelity Extended Market Index | 0.49% | 287K | $10.9M | −4,880 (−1.7%) | August 31, 2026 |
| 20 | Invesco Pharmaceuticals ETF | 0.48% | 279K | $10.6M | +665 (+0.2%) | September 1, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SUPN insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-18 | Padmanabh P Bhatt | Sell | $49.60 | 7,250 | $359,600 |
| 2026-03-16 | Padmanabh P Bhatt | Sell | $50.28 | 50,000 | $2.5M |
| 2026-03-13 | Jack A Khattar | Sell | $50.37 | 35,000 | $1.8M |
| 2026-03-12 | Frederick M Hudson | Sell | $50.61 | 5,369 | $271,725 |
| 2026-03-06 | Georges Gemayel | Sell | $53.00 | 8,787 | $465,711 |
| 2026-03-05 | Georges Gemayel | Sell | $53.71 | 10,000 | $537,100 |
| 2026-03-03 | Gilbert Ray Cisneros, Jr. | Buy | $54.56 | — | — |
| 2026-02-19 | Bethany Sensenig | Sell | $51.01 | 4,475 | $228,270 |
| 2025-12-19 | Frank Mottola | Sell | $50.41 | 20,000 | $1.0M |
| 2025-12-18 | Padmanabh P Bhatt | Sell | $44.44 | 710 | $31,552 |
| 2025-12-11 | Gilbert Ray Cisneros, Jr. | Buy | $46.51 | — | — |
| 2025-10-09 | Gilbert Ray Cisneros, Jr. | Sell | $49.51 | — | — |
| 2025-10-09 | Jack A Khattar | Sell | $50.57 | 59,900 | $3.0M |
| 2025-09-29 | Jack A Khattar | Sell | $48.02 | 10,235 | $491,485 |
| 2025-09-23 | Jack A Khattar | Sell | $47.23 | 29,513 | $1.4M |
| 2025-09-22 | Jack A Khattar | Sell | $47.02 | 16,587 | $779,921 |
| 2025-09-12 | Frank Mottola | Sell | $45.87 | 5,000 | $229,350 |
| 2025-09-08 | Jack A Khattar | Sell | $46.29 | 6,322 | $292,645 |
| 2025-09-05 | Jack A Khattar | Sell | $46.01 | 55,578 | $2.6M |
| 2025-08-25 | Frank Mottola | Sell | $44.51 | 14,000 | $623,140 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
SUPN shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SUPN
Institutional investors own 106.0% of Supernus Pharmaceuticals's shares and insiders 4.32%. The largest holder is BlackRock Inc with 16.06% of the shares (9.4M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 10.49% of the float, or 7.89 days of average trading volume. The share count rose 32.7% since 2014.
Related: SUPN analyst forecast, SUPN key metrics. See the SUPN stock overview for the latest quote and news.
SUPN ownership FAQ
Who owns the most Supernus Pharmaceuticals stock?
The largest shareholders of Supernus Pharmaceuticals are BlackRock Inc (16.06%), Millennium Management LLC (6.62%), Vanguard Portfolio Management, LLC (5.68%), Armistice Capital, LLC (4.54%), Vanguard Capital Management, LLC (4.32%).
What percentage of Supernus Pharmaceuticals is owned by institutions?
Institutions hold 106.0% of Supernus Pharmaceuticals's shares outstanding; insiders hold 4.32%.
Which funds own Supernus Pharmaceuticals?
The largest fund holders of Supernus Pharmaceuticals are iShares Core S&P Small-Cap ETF (5.94%), Nomura Small Cap Core I (3.29%), Vanguard MStar Total Stk Mkt Idx Invest (3.02%), iShares Russell 2000 ETF (2.48%), Vanguard Small Cap Index (2.14%).
What is Supernus Pharmaceuticals's short interest?
5.0M shares of Supernus Pharmaceuticals were sold short, 10.49% of the float; at the average daily volume it would take 7.89 days to cover.
Are insiders buying or selling Supernus Pharmaceuticals?
Of the latest 20 reported insider transactions in Supernus Pharmaceuticals (since August 25, 2025), 2 were purchases and 18 were sales.
How many shares of Supernus Pharmaceuticals are outstanding?
Supernus Pharmaceuticals has 58.2M shares outstanding, of which 51.7M are in the public float.