Calamos Advisors LLC

Position in HALO — Halozyme Therapeutics, Inc.

CIK 1316507 NAPERVILLE, IL

Position in HALO

as of Mar 31, 2026 · filed May 4, 2026 Compact

Position Value

$4,756,768

-$290,732 QoQ

Shares Held

73,600

-1.9% QoQ

Ownership

0.062%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

12 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

Calamos Advisors LLC holds $103,200,124 across 23 Biotechnology names. HALO ranks #5 (4.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	77,886	$34,779,214
2	RPRX	Royalty Pharma plc	437,090	$20,967,207
3	REGN	Regeneron Pharmaceuticals, Inc.	11,793	$9,111,743
4	INSM	INSMED Inc	36,373	$5,947,712
5	HALO	Halozyme Therapeutics, Inc. This page	73,600	$4,756,768
6	LGND	Ligand Pharmaceuticals Inc	20,860	$4,164,698
7	ASND	Ascendis Pharma A/S	15,390	$3,520,154
8	TARS	Tarsus Pharmaceuticals, Inc.	43,832	$3,074,814

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,756,768	73,600	-1.9%	Shares	Sole	2026-05-04
2025-12-31	$5,047,500	75,000	+41.5%	Shares	Sole	2026-01-29
2025-09-30	$3,887,020	53,000	+63.8%	Shares	Sole	2025-10-20
2024-09-30	$1,851,655	32,349	-26.4%	Shares	Other	2024-11-07
2024-06-30	$2,302,164	43,968	+139.6%	Shares	Other	2024-07-25
2022-12-31	$1,044,342	18,354	-40.9%	Shares	Sole	2023-01-26
2022-09-30	$1,227,755	31,051	-69.2%	Shares	Sole	2022-10-24
2022-06-30	$4,431,856	100,724	+56.5%	Shares	Sole	2022-08-01
2021-03-31	$2,683,125	64,359	-45.3%	Shares	Sole	2021-04-12
2020-12-31	$5,027,648	117,716	+22.4%	Shares	Other	2021-01-27
2020-09-30	$2,527,371	96,171	+105.9%	Shares	Other	2020-10-26
2020-06-30	$1,252,107	46,703	—	Shares	Sole	2020-07-27
No filing history on record for this holder in this stock.