CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in SUPN — Supernus Pharmaceuticals, Inc.

CIK 884546 SAN FRANCISCO, CA

Back to SUPN Full portfolio

Position in SUPN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$36,491,899

+$1,521,737 QoQ

Shares Held

705,976

+0.3% QoQ

Ownership

1.22%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 99.99178442326652.ToString("F0")% Shared 0.ToString("F0")% None 0.008215576733486692.ToString("F0")%

Common Shares in SUPN Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Mar 31, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $1,628,257,886 across 43 Drug Manufacturers - Specialty & Generic names. SUPN ranks #11 (2.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ZTS	Zoetis Inc.	3,717,247	$439,415,767
2	VTRS	Viatris Inc	13,674,306	$184,739,874
3	UTHR	UNITED THERAPEUTICS Corp	300,481	$178,179,223
4	NBIX	Neurocrine Biosciences Inc	902,788	$118,933,291
5	ELAN	Elanco Animal Health Inc	3,577,850	$85,617,950
6	ALKS	Alkermes plc.	2,236,756	$79,091,692
7	TEVA	Teva Pharmaceutical Industries Ltd	2,087,679	$62,880,891
8	LNTH	Lantheus Holdings, Inc.	657,413	$49,864,776

All Filings in SUPN

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$36,491,899	705,976	+0.3%	Shares	Sole	2026-05-15
2025-12-31	$34,970,162	703,625	-3.9%	Shares	Sole	2026-02-13
2025-09-30	$35,005,649	732,489	-2.2%	Shares	Sole	2025-11-10
2025-06-30	$23,597,164	748,641	+0.3%	Shares	Sole	2025-08-12
2025-03-31	$24,436,379	746,149	-1.0%	Shares	Sole	2025-09-15
2024-12-31	$27,241,606	753,363	+5.8%	Shares	Sole	2025-02-06
2024-09-30	$22,212,476	712,395	+14.7%	Shares	Sole	2024-11-12
2024-06-30	$16,612,846	621,041	+4.8%	Shares	Sole	2024-08-12
2024-03-31	$20,215,155	592,646	+6.6%	Shares	Sole	2024-05-09
2023-12-31	$16,088,614	555,930	+4.6%	Shares	Sole	2024-02-06
2023-09-30	$14,646,452	531,246	-2.1%	Shares	Sole	2023-11-08
2023-06-30	$16,307,790	542,508	+6.4%	Shares	Sole	2023-08-10
2023-03-31	$18,470,271	509,806	+0.5%	Shares	Sole	2023-05-12
2022-12-31	$18,100,777	507,451	+8.5%	Shares	Sole	2023-02-13
2022-09-30	$15,834,149	467,774	+8.9%	Shares	Sole	2022-11-14
2022-06-30	$12,419,722	429,451	+6.8%	Shares	Sole	2022-08-15
2022-03-31	$13,002,012	402,290	+9.0%	Shares	Sole	2022-05-13
2021-12-31	$10,762,722	369,092	+2.0%	Shares	Sole	2022-02-11
2021-09-30	$9,654,673	362,005	-13.5%	Shares	Sole	2021-11-16
2021-06-30	$12,886,846	418,540	-7.2%	Shares	Sole	2021-08-16
2021-03-31	$11,805,321	450,929	+2.6%	Shares	Sole	2021-05-17
2020-12-31	$11,057,744	439,497	-1.6%	Shares	Sole	2021-02-16
2020-09-30	$9,309,519	446,714	+30.2%	Shares	Sole	2020-11-13
2020-06-30	$8,148,197	343,082	+7.2%	Shares	Sole	2020-08-20
2020-03-31	$5,759,390	320,144	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.