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  • HALO Halozyme Therapeutics, Inc.

HALO

Halozyme Therapeutics, Inc.

Company with tickers: HALO

CIK
1159036
CUSIP
40637H109
Shares Outstanding
118,613,000
13F Activity (30d)
454 filings 422 filers
Holders: 628
Total Value: $7,799,378,953
Total Shares: 120,677,385
Showing 1–100 of 644 holdings by value · page 1 of 7

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 628 13F filers · Δ vs Dec 31, 2025
Top Holder
11.0%
Jun 2023 → Mar 2026 · range 10.5% – 13.9%
+0.4 pts
Top 5
27.1%
Jun 2023 → Mar 2026 · range 27.1% – 44.0%
−2.5 pts
Top 10
38.1%
Jun 2023 → Mar 2026 · range 38.1% – 55.1%
−1.6 pts
HHI
260
Jun 2023 → Mar 2026 · range 260 – 504
Broadly held −36

Quarterly Activity

vs Dec 31, 2025
New
95
Increased
236
Decreased
210
Sold Out
86
Unchanged
87
Holder count: +9
Institutional value: -6.4%
Shares held: -2.5%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Large Boston Partners +2,196,614 2,683,683
Mega TWO SIGMA INVESTMENTS, LP +867,592 1,584,961
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC +683,019 2,525,975
Mega JANE STREET GROUP, LLC +659,763 886,407
Large Epoch Investment Partners, Inc. +605,018 1,138,377

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP −1,304,358 1,918,149
Mega MILLENNIUM MANAGEMENT LLC −1,042,664 471,284
Large NATIXIS −466,292 1,216
Mega UBS Group AG −451,640 914,003
Large FEDERATED HERMES, INC. −451,355 1,123,266

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 5,271,218 $340,678,819
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 5,249,206 $339,256,183
Mega VANGUARD FIDUCIARY TRUST CO 747,356 $48,301,618
Large HRT FINANCIAL LP 174,529 $11,279,809
Mega VANGUARD ASSET MANAGEMENT, Ltd 108,498 $7,012,225

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 11,566,896 $778,452,098
Mega NORGES BANK 1,904,922 $128,201,250
Mid Pacer Advisors, Inc. 937,293 $63,079,818
Large Qube Research & Technologies Ltd 412,421 $27,755,933
Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 141,148 $9,499,260
Filter: New 95 Increased 236 Reduced 210 Sold out 86 Unchanged 87
Showing 100 of 644
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $857,320,367 10.99% 13,265,053
Mega VANGUARD CAPITAL MANAGEMENT LLC $340,678,819 4.37% 5,271,218
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $339,256,183 4.35% 5,249,206
Mega STATE STREET CORP $319,133,504 4.09% 4,937,854
Mega Invesco Ltd. $259,327,483 3.32% 4,012,494
Mega BANK OF AMERICA CORP /DE/ Bank $188,274,232 2.41% 2,913,109
Large Boston Partners $173,446,430 2.22% 2,683,683
Mega MORGAN STANLEY $165,602,023 2.12% 2,562,309
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $163,253,764 2.09% 2,525,975
Mega GEODE CAPITAL MANAGEMENT, LLC $161,948,948 2.08% 2,505,786
Mid SNYDER CAPITAL MANAGEMENT L P $150,140,466 1.93% 2,323,077
Mega DIMENSIONAL FUND ADVISORS LP $134,419,216 1.72% 2,079,827
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $123,969,969 1.59% 1,918,149
Mega D. E. Shaw & Co., Inc. $120,774,597 1.55% 1,868,708
Mega ALLIANCEBERNSTEIN L.P. $112,230,059 1.44% 1,736,501
Large ROYAL LONDON ASSET MANAGEMENT LTD $104,090,040 1.33% 1,610,553
Large JUPITER ASSET MANAGEMENT LTD $103,941,584 1.33% 1,608,256
Mega TWO SIGMA INVESTMENTS, LP $102,436,029 1.31% 1,584,961
Mega WELLS FARGO & COMPANY/MN $99,254,679 1.27% 1,535,737
Mega FIRST TRUST ADVISORS LP $95,803,634 1.23% 1,482,340
Large FULLER & THALER ASSET MANAGEMENT, INC. $94,701,240 1.21% 1,465,283
Large GW&K Investment Management, LLC $90,086,140 1.16% 1,393,875
Large LSV ASSET MANAGEMENT $88,643,793 1.14% 1,371,558
Mid MIZUHO MARKETS AMERICAS LLC $85,540,648 1.10% 1,323,544
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $83,342,517 1.07% 1,289,533
Large CONGRESS ASSET MANAGEMENT CO $82,764,660 1.06% 1,280,592
Mega JANUS HENDERSON GROUP PLC $79,731,316 1.02% 1,233,658
Mid Stephens Investment Management Group LLC $78,762,512 1.01% 1,218,668
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $76,712,643 0.98% 1,186,951
Mega TD Asset Management Inc $75,530,883 0.97% 1,168,666
Mega FRANKLIN RESOURCES INC $74,779,428 0.96% 1,157,039
Large Epoch Investment Partners, Inc. $73,573,304 0.94% 1,138,377
Large FEDERATED HERMES, INC. $72,596,680 0.93% 1,123,266
Large Caisse de depot et placement du Quebec $72,463,156 0.93% 1,121,200
Mega NORTHERN TRUST CORP Bank $71,818,856 0.92% 1,111,231
Mega BANK OF MONTREAL /CAN/ Bank $68,223,231 0.87% 1,055,597
Mega AQR CAPITAL MANAGEMENT LLC $65,691,802 0.84% 1,016,429
Mega Bank of New York Mellon Corp Bank $63,585,700 0.82% 983,842
Mega UBS Group AG $59,072,012 0.76% 914,003
Mega Capital World Investors $56,351,026 0.72% 871,902
Mega JANE STREET GROUP, LLC $53,753,223 0.69% 831,707
Large JACOBS LEVY EQUITY MANAGEMENT, INC $51,020,796 0.65% 789,429
Mega VANGUARD FIDUCIARY TRUST CO Bank $48,301,618 0.62% 747,356
Large Gotham Asset Management, LLC $48,268,333 0.62% 746,841
Large RENAISSANCE TECHNOLOGIES LLC $47,296,944 0.61% 731,811
Mega GOLDMAN SACHS GROUP INC $47,188,946 0.61% 730,140
Large LOS ANGELES CAPITAL MANAGEMENT LLC $44,589,206 0.57% 689,915
Large Boston Trust Walden Corp $43,920,156 0.56% 679,563
Mega ROYAL BANK OF CANADA Bank $42,545,279 0.55% 658,290
Mega JPMORGAN CHASE & CO $40,957,966 0.53% 633,730
Mega Nuveen, LLC $38,268,973 0.49% 592,124
Mid ArrowMark Colorado Holdings LLC $36,825,463 0.47% 569,789
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $34,126,640 0.44% 528,031
Large Bridgewater Associates, LP $33,053,656 0.42% 511,429
Large Handelsbanken Fonder AB $31,892,901 0.41% 493,469
Mid KENNEDY CAPITAL MANAGEMENT LLC $31,318,405 0.40% 484,580
Mid RENAISSANCE GROUP LLC $30,472,980 0.39% 471,499
Mega MILLENNIUM MANAGEMENT LLC $30,459,084 0.39% 471,284
Large SEI INVESTMENTS CO $29,586,514 0.38% 457,783
Mega Fisher Asset Management, LLC $28,740,250 0.37% 444,689
Mid Arbejdsmarkedets Tillaegspension Pension $26,394,310 0.34% 408,391
Large Empowered Funds, LLC $24,852,688 0.32% 384,538
Large MetLife Investment Management, LLC $24,231,790 0.31% 374,931
Large Retirement Systems of Alabama Pension $24,167,936 0.31% 373,943
Mega VICTORY CAPITAL MANAGEMENT INC $22,950,048 0.29% 355,099
Mega RHUMBLINE ADVISERS $22,826,088 0.29% 353,181
Large Cerity Partners LLC $22,564,723 0.29% 349,137
Mega BNP PARIBAS ARBITRAGE, SA $21,863,747 0.28% 338,291
Mega Legal & General Group Plc $21,192,693 0.27% 327,908
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $20,068,584 0.26% 310,515
Mid SEGALL BRYANT & HAMILL, LLC $19,263,359 0.25% 298,056
Mega RAYMOND JAMES FINANCIAL INC $18,777,016 0.24% 290,531
Mega PRINCIPAL FINANCIAL GROUP INC $17,093,988 0.22% 264,490
Mega California Public Employees Retirement System Pension $16,865,909 0.22% 260,961
Large Russell Investments Group, Ltd. $16,864,931 0.22% 260,946
Large Cresset Asset Management, LLC $16,764,828 0.21% 259,397
Mega PRICE T ROWE ASSOCIATES INC /MD/ $16,764,375 0.21% 259,390
Mega ENVESTNET ASSET MANAGEMENT INC $15,703,926 0.20% 242,982
Mid HANCOCK WHITNEY CORP $15,093,818 0.19% 233,542
Small South Street Advisors LLC $15,054,912 0.19% 232,940
Mega Swiss National Bank Bank $15,039,401 0.19% 232,700
Mid OBERWEIS ASSET MANAGEMENT INC/ $14,214,075 0.18% 219,930
Large Clark Capital Management Group, Inc. $13,837,412 0.18% 214,102
Mega AMERICAN CENTURY COMPANIES INC $13,448,921 0.17% 208,091
Mega LPL Financial LLC $12,557,867 0.16% 194,304
Mega BARCLAYS PLC $12,489,228 0.16% 193,242
Large Universal- Beteiligungs- und Servicegesellschaft mbH $12,426,668 0.16% 192,274
Mega AMERIPRISE FINANCIAL INC $12,362,361 0.16% 191,279
Mega CITADEL ADVISORS LLC $12,347,626 0.16% 191,051
Large Corient Private Wealth LLC $12,323,906 0.16% 190,684
Mid Susquehanna Portfolio Strategies, LLC $12,156,903 0.16% 188,100
Large OSAIC HOLDINGS, INC. $11,858,698 0.15% 183,486
Large HRT FINANCIAL LP $11,279,809 0.14% 174,529
Large CAPITAL FUND MANAGEMENT S.A. $11,270,050 0.14% 174,378
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $11,149,901 0.14% 172,519
Large Focus Partners Wealth $10,940,954 0.14% 169,286
Large Tidal Investments LLC $10,831,857 0.14% 167,598
Large ASSETMARK, INC $10,768,456 0.14% 166,617
Mid INTECH INVESTMENT MANAGEMENT LLC $10,525,900 0.13% 162,864
Large Swedbank AB Bank $10,386,816 0.13% 160,712
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