SUPERNUS PHARMACEUTICALS INC (SUPN) Top Institutional Shareholders
SUPERNUS PHARMACEUTICALS INC (SUPN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $2.87B in SUPN holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of SUPN tracked by InsiderSet, reporting ownership valued at approximately $454.73M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $383.38M, representing an estimated loss of -15.69% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed SUPN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Millennium Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in SUPERNUS PHARMACEUTICALS INC (SUPN).
This page ranks the largest institutional SUPN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
321
Total Reported Value
$2.87B
Largest Holder
Blackrock, Inc.
Largest Position
$454.73M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
69
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 8,797,254 | $454,730,061 | $383,384,329 | -$71,345,732 | -15.69% | |
| Millennium Management Llc | 0.13% | 3,315,973 | $171,402,644 | $144,510,103 | -$26,892,541 | -15.69% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,238,693 | $167,408,041 | $141,142,241 | -$26,265,800 | -15.69% | |
| Vanguard Capital Management Llc | 0.00% | 2,467,215 | $127,530,343 | $107,521,230 | -$20,009,113 | -15.69% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,307,030 | $119,239,273 | $100,540,367 | -$18,698,906 | -15.68% | |
| State Street Corp | 0.00% | 2,288,127 | $118,273,285 | $99,716,575 | -$18,556,710 | -15.69% | |
| Nomura Asset Management International Inc. | 0.18% | 2,037,202 | $105,303,000 | $88,781,263 | -$16,521,737 | -15.69% | |
| Armistice Capital, Llc | 3.23% | 1,895,347 | $97,970,486 | $82,599,222 | -$15,371,264 | -15.69% | |
| Renaissance Technologies LLC | Jim Simons | 0.14% | 1,705,222 | $88,142,925 | $74,313,575 | -$13,829,350 | -15.69% |
| Geode Capital Management, Llc | 0.01% | 1,623,514 | $83,933,938 | $70,752,740 | -$13,181,198 | -15.70% | |
| Citadel Advisors Llc | 0.05% | 1,493,446 | $77,196,223 | $65,084,377 | -$12,111,846 | -15.69% | |
| Loomis Sayles & Co L P | 0.10% | 1,425,779 | $73,698,522 | $62,135,449 | -$11,563,073 | -15.69% | |
| Stephens Investment Management Group Llc | 0.96% | 1,351,331 | $69,850,299 | $58,891,005 | -$10,959,294 | -15.69% | |
| Point72 Asset Management, L.P. | 0.12% | 1,318,555 | $68,156,108 | $57,462,627 | -$10,693,481 | -15.69% | |
| Sofinnova Investments, Inc. | 2.47% | 954,309 | $49,328,232 | $41,588,786 | -$7,739,446 | -15.69% | |
| Morgan Stanley | 0.00% | 913,893 | $47,239,157 | $39,827,457 | -$7,411,700 | -15.69% | |
| Goldman Sachs Group Inc | 0.01% | 856,487 | $44,271,813 | $37,325,703 | -$6,946,110 | -15.69% | |
| Bank Of America Corp | 0.00% | 714,226 | $36,918,329 | $31,125,969 | -$5,792,360 | -15.69% | |
| Charles Schwab Investment Management Inc | 0.01% | 705,976 | $36,491,899 | $30,766,434 | -$5,725,465 | -15.69% | |
| Northern Trust Corp | 0.00% | 699,456 | $36,154,881 | $30,482,292 | -$5,672,589 | -15.69% | |
| Ashford Capital Management Inc | 4.12% | 645,381 | $33,359,744 | $28,125,704 | -$5,234,040 | -15.69% | |
| Freestone Grove Partners Lp | 0.24% | 641,319 | $33,149,779 | $27,948,682 | -$5,201,097 | -15.69% | |
| D. E. Shaw & Co., Inc. | 0.03% | 622,450 | $32,174,441 | $27,126,371 | -$5,048,070 | -15.69% | |
| Assenagon Asset Management S.A. | 0.04% | 530,618 | $27,427,644 | $23,124,332 | -$4,303,312 | -15.69% | |
| Victory Capital Management Inc | 0.02% | 502,406 | $25,969,366 | $21,894,853 | -$4,074,513 | -15.69% | |
| Qube Research & Technologies Ltd | 0.04% | 498,198 | $25,751,855 | $21,711,469 | -$4,040,386 | -15.69% | |
| Rice Hall James & Associates, Llc | 1.37% | 477,416 | $24,677,633 | $20,805,789 | -$3,871,844 | -15.69% | |
| Woodline Partners Lp | 0.09% | 448,996 | $23,208,603 | $19,567,246 | -$3,641,357 | -15.69% | |
| Pictet Asset Management Holding Sa | 0.02% | 450,764 | $22,268,725 | $19,644,295 | -$2,624,430 | -11.79% | |
| Invesco Ltd. | 0.00% | 412,683 | $21,331,585 | $17,984,725 | -$3,346,860 | -15.69% | |
| Systematic Financial Management Lp | 0.45% | 376,079 | $19,439,575 | $16,389,523 | -$3,050,052 | -15.69% | |
| Vanguard Fiduciary Trust Co | 0.00% | 369,247 | $19,086,377 | $16,091,784 | -$2,994,593 | -15.69% | |
| Bank Of New York Mellon Corp | 0.00% | 362,408 | $18,732,870 | $15,793,741 | -$2,939,129 | -15.69% | |
| Principal Financial Group Inc | 0.01% | 341,117 | $17,632,338 | $14,865,879 | -$2,766,459 | -15.69% | |
| Metlife Investment Management, Llc | 0.08% | 304,172 | $15,722,651 | $13,255,816 | -$2,466,835 | -15.69% | |
| Aberdeen Group Plc | 0.02% | 275,561 | $14,243,748 | $12,008,948 | -$2,234,800 | -15.69% | |
| Two Sigma Investments, Lp | 0.01% | 271,228 | $14,019,775 | $11,820,116 | -$2,199,659 | -15.69% | |
| Royce & Associates Lp | 0.12% | 229,939 | $11,885,547 | $10,020,742 | -$1,864,805 | -15.69% | |
| Nuveen, Llc | 0.00% | 216,047 | $11,167,469 | $9,415,328 | -$1,752,141 | -15.69% | |
| Fmr Llc | 0.00% | 209,370 | $10,822,353 | $9,124,345 | -$1,698,008 | -15.69% | |
| Ubs Group Ag | 0.00% | 209,124 | $10,809,619 | $9,113,624 | -$1,695,995 | -15.69% | |
| Public Sector Pension Investment Board | 0.03% | 205,158 | $10,604,617 | $8,940,786 | -$1,663,831 | -15.69% | |
| Aristotle Capital Boston, Llc | 0.65% | 203,094 | $10,505,468 | $8,850,837 | -$1,654,631 | -15.75% | |
| Exoduspoint Capital Management, Lp | 0.11% | 202,116 | $10,447,376 | $8,808,215 | -$1,639,161 | -15.69% | |
| Ameriprise Financial Inc | 0.00% | 173,905 | $8,989,169 | $7,578,780 | -$1,410,389 | -15.69% | |
| Rhumbline Advisers | 0.01% | 169,275 | $8,749,796 | $7,377,005 | -$1,372,792 | -15.69% | |
| Schroder Investment Management Group | 0.01% | 176,076 | $8,689,350 | $7,673,392 | -$1,015,958 | -11.69% | |
| Axiom Investors Llc | 0.09% | 163,978 | $8,476,023 | $7,146,161 | -$1,329,862 | -15.69% | |
| Sei Investments Co | 0.01% | 162,406 | $8,395,000 | $7,077,653 | -$1,317,347 | -15.69% | |
| American Century Companies Inc | 0.00% | 161,025 | $8,323,382 | $7,017,470 | -$1,305,913 | -15.69% |
Frequently asked questions about SUPN
Who owns the most SUPN stock?
The largest holders of SUPN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for SUPERNUS PHARMACEUTICALS INC (SUPN).
Is SUPN widely held by superinvestors?
Many widely followed stocks like SUPN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly SUPN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.