Halozyme Therapeutics, Inc. (HALO) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

123,784,766Shares Outstanding

721,977Shares held by institutions

$58,104,709Value of institutional holdings

94.94%Institutional ownership %

6.96%Shares Changed QoQ

575No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Halozyme Therapeutics, Inc. (NASDAQ:HALO) currently has 575 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

The percentage of Halozyme Therapeutics owned by institutions changed from 120.0% in September 2025 to 94.9% in December 2025, marking a slight down trend.
The company experienced a 6.96% quarterly change in institutional shares held, alongside an increase of 15.23% in total owners annually.
A review of institutional activity for Halozyme Therapeutics shows 305 of 575 filers increasing their positions, while 207 reduced their stake, and 63 remained unchanged.
This class of investors increased its holdings in Halozyme Therapeutics to 117.52Mn shares for the 13F-cycle ending December 2025, up by 7.65Mn shares quarter on quarter, and down 5.08Mn shares year over year.
With 13.15Mn shares, BlackRock, Inc. commands the largest institutional position in Halozyme Therapeutics as of December 31, 2025, equating to 10.63% of the company.
Among the most significant buyers of Halozyme Therapeutics during December 2025 were NORGES BANK (1.90Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (1.84Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.52Mn), MIZUHO MARKETS AMERICAS LLC (926.53K), MORGAN STANLEY (920.70K).
Leading sellers of Halozyme Therapeutics stock in December 2025 included UBS Group AG (1.58Mn), D. E. Shaw & Co., Inc. (1.00Mn), JANE STREET GROUP, LLC (928.52K), TWO SIGMA INVESTMENTS, LP (598.55K), TWO SIGMA ADVISERS, LP (480.80K).
The top 10 institutional holders of Halozyme Therapeutics for the quarter ending December 2025 included BlackRock, Inc. (13.15Mn), VANGUARD GROUP INC (11.57Mn), STATE STREET CORP (5.12Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (3.22Mn), BANK OF AMERICA CORP /DE/ (2.73Mn), MORGAN STANLEY (2.66Mn), GEODE CAPITAL MANAGEMENT, LLC (2.43Mn), SNYDER CAPITAL MANAGEMENT L P (2.40Mn), DIMENSIONAL FUND ADVISORS LP (2.10Mn), NORGES BANK (1.90Mn).

575 Institutional Holders

721,977 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	13,153,857	293,658	2.28%	$885,254,609.00
VANGUARD GROUP INC	31 Dec, 2025	11,566,896	-62,890	-0.54%	$778,452,101.00
STATE STREET CORP	31 Dec, 2025	5,121,672	102,465	2.04%	$344,688,526.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	3,222,507	-68,158	-2.07%	$216,874,721.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	2,733,832	757,646	38.34%	$183,986,863.00
MORGAN STANLEY	31 Dec, 2025	2,658,299	920,699	52.99%	$178,903,641.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,433,193	1,914	0.08%	$163,783,386.00
SNYDER CAPITAL MANAGEMENT L P	31 Dec, 2025	2,399,188	-334,656	-12.24%	$161,465,352.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,104,157	25,731	1.24%	$141,612,901.00
NORGES BANK	31 Dec, 2025	1,904,922	1,904,922	0.00%	$128,201,251.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	1,842,956	1,842,956	0.00%	$124,030,939.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	1,835,486	-71,869	-3.77%	$123,528,208.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	1,649,466	-1,000,909	-37.76%	$111,009,062.00
FEDERATED HERMES, INC.	31 Dec, 2025	1,574,621	123,917	8.54%	$105,971,994.00
JUPITER ASSET MANAGEMENT LTD	31 Dec, 2025	1,569,559	768,976	96.05%	$105,631,321.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	1,518,405	1,518,405	0.00%	$102,189,000.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,513,948	286,364	23.33%	$101,888,700.00
WELLS FARGO & COMPANY/MN	31 Dec, 2025	1,405,517	819,857	139.99%	$94,591,326.00
FULLER & THALER ASSET MANAGEMENT, INC.	31 Dec, 2025	1,379,575	8,391	0.61%	$92,845,379.00
ROYAL LONDON ASSET MANAGEMENT LTD	31 Dec, 2025	1,371,271	228,014	19.94%	$92,286,539.00

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