Company · Ownership research

SUPERNUS PHARMACEUTICALS, INC. SUPN

CIK 0001356576 · CUSIP 868459108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 868459108 (SUPN), not CUSIP 868459958 (SUPN), CUSIP 868459908 (SUPN), and does not merge CUSIPs.

This page lists the top 20 of 333 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$434.17M 8,735,868 shares	0.01%	+37.46K(+0.40%)Added	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$300.61M 6,048,496 shares	0.00%	+3.75K(+0.10%)Added	SEC filing ↗ Jan 29, 2026	▾
03	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$137.37M 2,764,000 shares	3.36%	-72.00K(-2.50%)Reduced	SEC filing ↗ Feb 17, 2026	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$134.80M 2,712,341 shares	0.03%	-289.60K(-9.60%)Reduced	SEC filing ↗ Feb 12, 2026	▾
05	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$131.21M 2,640,066 shares	0.09%	+2.29M(+662.40%)Added	SEC filing ↗ Feb 17, 2026	▾
06	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$114.69M 2,307,639 shares	0.17%	—	SEC filing ↗ Feb 17, 2026	▾
07	Point72 Asset Management, L.P. CIK 1603466 · View history	$112.56M 2,264,800 shares	0.18%	+503.32K(+28.60%)Added	SEC filing ↗ Feb 17, 2026	▾
08	STATE STREET CORP CIK 93751 · View history	$110.30M 2,219,228 shares	0.00%	+31.67K(+1.40%)Added	SEC filing ↗ Feb 13, 2026	▾
09	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$86.11M 1,732,522 shares	0.13%	-8.10K(-0.50%)Reduced	SEC filing ↗ Feb 12, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$73.21M 1,472,899 shares	0.00%	+62.88K(+4.50%)Added	SEC filing ↗ Feb 9, 2026	▾
11	LOOMIS SAYLES & CO L P CIK 312348 · View history	$72.01M 1,448,842 shares	0.09%	+162.91K(+12.70%)Added	SEC filing ↗ Feb 12, 2026	▾
12	Stephens Investment Management Group LLC CIK 1314440 · View history	$69.90M 1,406,522 shares	0.91%	+61.12K(+4.50%)Added	SEC filing ↗ Feb 5, 2026	▾
13	GW&K Investment Management, LLC CIK 1082917 · View history	$53.71M 1,080,716 shares	0.46%	+178(0.00%)Added	SEC filing ↗ Feb 11, 2026	▾
14	MORGAN STANLEY CIK 895421 · Amended · View history	$53.65M 1,079,471 shares	0.00%	+324.15K(+42.90%)Added	SEC filing ↗ May 27, 2026	▾
15	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$35.19M 707,982 shares	0.03%	-271.62K(-27.70%)Reduced	SEC filing ↗ Feb 17, 2026	▾
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$34.97M 703,625 shares	0.01%	-28.86K(-3.90%)Reduced	SEC filing ↗ Feb 13, 2026	▾
17	NORTHERN TRUST CORP CIK 73124 · View history	$33.32M 670,413 shares	0.00%	-33.14K(-4.70%)Reduced	SEC filing ↗ Feb 17, 2026	▾
18	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$32.82M 660,310 shares	0.00%	-502.75K(-43.20%)Reduced	SEC filing ↗ Mar 25, 2026	▾
19	ASHFORD CAPITAL MANAGEMENT INC CIK 897070 · View history	$30.44M 612,538 shares	3.39%	+48.82K(+8.70%)Added	SEC filing ↗ Feb 17, 2026	▾
20	Sofinnova Investments, Inc. CIK 1631134 · View history	$27.49M 553,095 shares	1.19%	+176.03K(+46.70%)Added	SEC filing ↗ Feb 13, 2026	▾

Showing 20 / 333 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

333

Cancelled or null records excluded

Disclosed shares

57,113,084

Not deduplicated across managers

Disclosed value

$2.84B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SUPERNUS PHARMACEUTICALS, INC. · Q4 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.