Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

HALOZYME THERAPEUTICS, INC.

CIK 0001159036HALO· quarter ending 2026-06-30

Shares outstanding

113,498,000

as of 2026-07-31 · 10-Q cover page, filed 2026-08-06

Held by 13F filers

457,346,230

selection includes debt or preferreds — no % of shares outstanding

Holders

+2 vs 2026-03-31 · 10 new, 8 exited

Value

$643.1M

shares +0.5% vs prior quarter

13F holdings exceed the share count. This is normal for heavily shorted stocks: shares lent to short sellers are reported by the lender and again by whoever bought them. Related filers occasionally report the same position twice as well.

Share classes (cover page of the 10-Q filed 2026-08-06, as of 2026-07-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	HALO · NASDAQ	113,498,000	124,271,848	109.5%	674	40637H109

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
40637H109	COM	674	124,271,848	113,498,000	109.5%	$9.7B	8 call / 7 put	13DG	holders →
40637HAF6	NOTE 1.000% 8/1not common	53	27,387,100 $430.0M principal	—	—	$643.1M	—	NPORT	holders →
40637HAD1	NOTE 0.250% 3/0not common	52	19,274,931 $188.7M principal	—	—	$233.6M	—	NPORT	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 2 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (53 of 53 · 40637HAF6)

change vs 2026-03-31

#	Filer	Shares / principal	% of class	Value	Change
1	CITADEL ADVISORS LLC	66,016,000	—	$96.7M	+40,924,000 (+163.1%)
2	LMR Partners LLP	45,000,000	—	$65.8M	—
3	Point72 Asset Management, L.P.	41,351,000	—	$60.5M	-6,000,000 (-12.7%)
4	TENOR CAPITAL MANAGEMENT Co., L.P.	37,827,000	—	$55.6M	-17,199,000 (-31.3%)
5	Alberta Investment Management Corp	35,000,000	—	$51.3M	—
6	Lombard Odier Asset Management (Europe) Ltd	19,789,000	—	$29.1M	-180,000 (-0.9%)
7	MILLENNIUM MANAGEMENT LLC	18,760,000	—	$27.5M	-10,163,000 (-35.1%)
8	LAZARD ASSET MANAGEMENT LLC	17,631,000	—	$258K	+1,480,000 (+9.2%)
9	ABSOLUTE INVESTMENT ADVISERS, LLC	14,000,000	—	$20.4M	—
10	STATE STREET CORP	13,106,000	—	$19.2M	+4,068,000 (+45.0%)
11	Linden Advisors LP	12,993,000	—	$19.0M	—
12	Calamos Advisors LLC	11,706,000	—	$17.2M	+99,000 (+0.9%)
13	BANK OF MONTREAL /CAN/	10,833,000	—	$10.8M	+4,833,000 (+80.5%)
14	BlackRock, Inc.	10,175,000	—	$14.9M	+2,550,000 (+33.4%)
15	ADVENT CAPITAL MANAGEMENT /DE/	9,129,000	—	$13.4M	+1,262,000 (+16.0%)
16	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	8,100,000	—	$11.9M	—
17	O'Connor Alternative Investments LLC	7,000,000	—	$10.2M	NEW
18	OFI INVEST ASSET MANAGEMENT	6,800,000	—	$8.7M	—
19	FMR LLC	6,751,000	—	$9.9M	+97,000 (+1.5%)
20	JPMORGAN CHASE & CO	6,428,000	—	$9.3M	-4,286,000 (-40.0%)
21	SSI INVESTMENT MANAGEMENT LLC	6,079,000	—	$8.9M	—
22	WELLS FARGO & COMPANY/MN	5,754,000	—	$8.4M	-356,000 (-5.8%)
23	LORD, ABBETT & CO. LLC	5,557,000	—	$8.1M	NEW
24	LBP AM SA	5,000,000	—	$7.3M	NEW
25	Union Bancaire Privee, UBP SA	4,605,000	—	$5.8M	+415,000 (+9.9%)
26	VOYA INVESTMENT MANAGEMENT LLC	4,000,000	—	$5.8M	-2,000,000 (-33.3%)
27	STATE OF WISCONSIN INVESTMENT BOARD	4,000,000	—	$5.8M	+1,000,000 (+33.3%)
28	Warberg Asset Management LLC	3,500,000	—	$5.1M	-2,500,000 (-41.7%)
29	BNP PARIBAS FINANCIAL MARKETS	3,020,000	—	$4.4M	NEW
30	Universal- Beteiligungs- und Servicegesellschaft mbH	2,658,000	—	$3.9M	+75,000 (+2.9%)
31	MORGAN STANLEY	2,400,000	—	$3.5M	—
32	Focus Partners Wealth	2,175,000	—	$3.2M	-120,000 (-5.2%)
33	Capital World Investors	2,155,000	—	$3.2M	—
34	Nykredit A/S	1,500,000	—	$2.2M	NEW
35	BARCLAYS PLC	1,175,000	—	$1.7M	NEW
36	AGF MANAGEMENT LTD	1,000,000	—	$1.5M	-500,000 (-33.3%)
37	Balyasny Asset Management L.P.	1,000,000	—	$1.5M	-16,785,000 (-94.4%)
38	CITIGROUP INC	763,000	—	$1.1M	NEW
39	Zurcher Kantonalbank (Zurich Cantonalbank)	500,000	—	$734K	—
40	Bank of New York Mellon Corp	410,000	—	$601K	-200,000 (-32.8%)
41	Man Group plc	370,000	—	$541K	—
42	ROYAL BANK OF CANADA	366,000	—	$536K	—
43	Central Pacific Bank - Trust Division	317,000	—	$463K	—
44	Russell Investments Group, Ltd.	232,000	—	$341K	—
45	RWC Asset Management LLP	201,000	—	$295K	NEW
46	Virtus Fixed Income Advisers, LLC	152,000	—	$222K	NEW
47	VIRTUS ADVISERS, LLC	35,000	—	$51K	—
48	FRANKLIN RESOURCES INC	10,000	—	$15K	-8,361,000 (-99.9%)
49	Steward Partners Investment Advisory, LLC	6,000	—	$9K	—
50	US BANCORP \DE\	5,000	—	$7K	—
51	Alken Asset Management Ltd	2,130	—	$3.1M	+100 (+4.9%)
52	BOUSSARD & GAVAUDAN GESTION SAS	2,100	—	$3.1M	NEW
53	UBS Group AG	2,000	—	$3K	+670 (+50.4%)

Exited since 2026-03-31 (8 filers; largest 8 shown)

Invesco Ltd.	−6,500,000
BANK OF AMERICA CORP /DE/	−2,113,000
GOLDMAN SACHS GROUP INC	−900,000
DNCA FINANCE	−630,000
JANE STREET GROUP, LLC	−118,000
Ares Systematic Credit Ltd	−100,000
LOOMIS SAYLES & CO L P	−5,177
Boussard & Gavaudan Investment Management LLP	−2,100

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Vanguard Capital Management	SCHEDULE 13G	2026-04-30	2026-03-31	6,173,547	5.21%
The Vanguard Group	SCHEDULE 13G/A	2026-03-27	2026-03-13	0	0%
BlackRock, Inc.	SCHEDULE 13G/A	2025-07-17	2025-06-30	12,612,300	10.2%
STATE STREET CORPORATION	SCHEDULE 13G	2025-05-13	2025-03-31	6,053,007	4.9%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.