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 273 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	$313.89M 10,066,932 shares	0.01%	—	SEC filing ↗ Nov 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$191.07M 6,127,907 shares	0.00%	-9.63K(-0.20%)Reduced	SEC filing ↗ Nov 13, 2024	▾
03	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$158.89M 5,096,000 shares	4.16%	-176.00K(-3.30%)Reduced	SEC filing ↗ Nov 14, 2024	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$89.87M 2,882,505 shares	0.02%	+15.62K(+0.50%)Added	SEC filing ↗ Nov 7, 2024	▾
05	MACQUARIE GROUP LTD CIK 1418333 · View history	$82.06M 2,631,897 shares	0.09%	-47.90K(-1.80%)Reduced	SEC filing ↗ Nov 14, 2024	▾
06	STATE STREET CORP CIK 93751 · View history	$67.24M 2,156,426 shares	0.00%	-7.42K(-0.30%)Reduced	SEC filing ↗ Nov 14, 2024	▾
07	Polar Capital Holdings Plc CIK 1837309 · View history	$60.42M 1,937,930 shares	0.29%	-2.58K(-0.10%)Reduced	SEC filing ↗ Nov 14, 2024	▾
08	Stephens Investment Management Group LLC CIK 1314440 · View history	$60.25M 1,932,209 shares	0.82%	+33.71K(+1.80%)Added	SEC filing ↗ Oct 28, 2024	▾
09	Pacer Advisors, Inc. CIK 1616667 · View history	$54.65M 1,752,882 shares	0.12%	+403.03K(+29.90%)Added	SEC filing ↗ Nov 12, 2024	▾
10	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$53.90M 1,728,622 shares	0.08%	+43.50K(+2.60%)Added	SEC filing ↗ Nov 13, 2024	▾
11	LOOMIS SAYLES & CO L P CIK 312348 · View history	$47.27M 1,516,123 shares	0.06%	-40.04K(-2.60%)Reduced	SEC filing ↗ Nov 13, 2024	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$46.22M 1,482,051 shares	0.00%	+74.44K(+5.30%)Added	SEC filing ↗ Nov 12, 2024	▾
13	GW&K Investment Management, LLC CIK 1082917 · View history	$38.60M 1,238,015 shares	0.33%	-55.30K(-4.30%)Reduced	SEC filing ↗ Nov 7, 2024	▾
14	Aristotle Capital Boston, LLC CIK 1633911 · View history	$37.24M 1,194,226 shares	1.23%	-8.94K(-0.70%)Reduced	SEC filing ↗ Nov 14, 2024	▾
15	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$32.58M 1,044,928 shares	0.02%	+543.27K(+108.30%)Added	SEC filing ↗ Nov 12, 2024	▾
16	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$28.05M 899,637 shares	0.01%	+309.30K(+52.40%)Added	SEC filing ↗ Nov 14, 2024	▾
17	VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history	$23.16M 742,871 shares	0.02%	+7.83K(+1.10%)Added	SEC filing ↗ Nov 5, 2024	▾
18	MORGAN STANLEY CIK 895421 · Amended · View history	$22.64M 726,113 shares	0.00%	+55.55K(+8.30%)Added	SEC filing ↗ May 14, 2025	▾
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$22.21M 712,395 shares	0.00%	+91.35K(+14.70%)Added	SEC filing ↗ Nov 12, 2024	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$18.90M 606,294 shares	0.00%	+6.78K(+1.10%)Added	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 273 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

273

Cancelled or null records excluded

Disclosed shares

59,888,656

Not deduplicated across managers

Disclosed value

$1.87B

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. · Q3 2024

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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.