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 328 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	$454.73M 8,797,254 shares	0.01%	+61.39K(+0.70%)Added	SEC filing ↗ May 13, 2026	▾
02	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$171.40M 3,315,973 shares	0.13%	+675.91K(+25.60%)Added	SEC filing ↗ May 15, 2026	▾
03	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$167.41M 3,238,693 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
04	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$127.53M 2,467,215 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
05	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$119.24M 2,307,030 shares	0.02%	-405.31K(-14.90%)Reduced	SEC filing ↗ May 7, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$118.27M 2,288,127 shares	0.00%	+68.90K(+3.10%)Added	SEC filing ↗ May 15, 2026	▾
07	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$105.30M 2,037,202 shares	0.18%	-270.44K(-11.70%)Reduced	SEC filing ↗ May 15, 2026	▾
08	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$97.97M 1,895,347 shares	3.23%	-868.65K(-31.40%)Reduced	SEC filing ↗ May 15, 2026	▾
09	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$88.14M 1,705,222 shares	0.14%	-27.30K(-1.60%)Reduced	SEC filing ↗ May 14, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$83.93M 1,623,514 shares	0.01%	+150.62K(+10.20%)Added	SEC filing ↗ May 15, 2026	▾
11	CITADEL ADVISORS LLC CIK 1423053 · View history	$77.20M 1,493,446 shares	0.05%	+1.04M(+229.70%)Added	SEC filing ↗ May 15, 2026	▾
12	LOOMIS SAYLES & CO L P CIK 312348 · View history	$73.70M 1,425,779 shares	0.10%	-23.06K(-1.60%)Reduced	SEC filing ↗ May 14, 2026	▾
13	Stephens Investment Management Group LLC CIK 1314440 · View history	$69.85M 1,351,331 shares	0.96%	-55.19K(-3.90%)Reduced	SEC filing ↗ Apr 28, 2026	▾
14	Point72 Asset Management, L.P. CIK 1603466 · View history	$68.16M 1,318,555 shares	0.12%	-946.25K(-41.80%)Reduced	SEC filing ↗ May 15, 2026	▾
15	GW&K Investment Management, LLC CIK 1082917 · View history	$54.54M 1,055,184 shares	0.48%	-25.53K(-2.40%)Reduced	SEC filing ↗ May 13, 2026	▾
16	Sofinnova Investments, Inc. CIK 1631134 · View history	$49.33M 954,309 shares	2.47%	+401.21K(+72.50%)Added	SEC filing ↗ May 15, 2026	▾
17	MORGAN STANLEY CIK 895421 · View history	$47.24M 913,893 shares	0.00%	-165.58K(-15.30%)Reduced	SEC filing ↗ May 15, 2026	▾
18	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$44.27M 856,487 shares	0.01%	+196.18K(+29.70%)Added	SEC filing ↗ May 15, 2026	▾
19	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$36.92M 714,226 shares	0.00%	+193.48K(+37.20%)Added	SEC filing ↗ May 18, 2026	▾
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$36.49M 705,976 shares	0.01%	+2.35K(+0.30%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 328 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

328

Cancelled or null records excluded

Disclosed shares

58,229,564

Not deduplicated across managers

Disclosed value

$3.01B

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. · Q1 2026

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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.