HALOZYME THERAPEUTICS INC (HALO) Institutional Shareholders
HALOZYME THERAPEUTICS INC (HALO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $9.48B in HALO holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of HALO tracked by InsiderSet, reporting ownership valued at approximately $1.04B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.44B, representing an estimated gain of +38.55% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 38% of the total disclosed HALO value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in HALOZYME THERAPEUTICS INC (HALO).
This page ranks the largest institutional HALO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
650
Total Reported Value
$9.48B
Largest Holder
Blackrock, Inc.
Largest Position
$1.04B
Insider Transactions (90d)
38
Latest Filing Quarter
Q2 2026
New Institutional Positions
66
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 13,271,095 | $1,038,728,610 | $1,439,117,542 | +$400,388,932 | +38.55% | |
| Vanguard Capital Management Llc | 0.01% | 5,351,312 | $418,847,190 | $580,296,273 | +$161,449,083 | +38.55% | |
| Vanguard Portfolio Management Llc | 0.02% | 5,299,008 | $414,753,356 | $574,624,428 | +$159,871,072 | +38.55% | |
| State Street Corp | 0.01% | 5,179,434 | $405,379,779 | $561,657,823 | +$156,278,044 | +38.55% | |
| Invesco Ltd. | 0.02% | 3,177,997 | $248,741,825 | $344,621,995 | +$95,880,170 | +38.55% | |
| Morgan Stanley | 0.01% | 2,832,391 | $221,691,420 | $307,144,480 | +$85,453,060 | +38.55% | |
| Boston Partners | 0.19% | 2,773,568 | $216,820,544 | $300,765,714 | +$83,945,170 | +38.72% | |
| Bank Of America Corp | 0.01% | 2,740,561 | $214,503,722 | $297,186,435 | +$82,682,713 | +38.55% | |
| Geode Capital Management, Llc | 0.01% | 2,519,951 | $197,281,725 | $273,263,486 | +$75,981,761 | +38.51% | |
| William Blair Investment Management, Llc | 0.59% | 2,511,050 | $196,539,884 | $272,298,262 | +$75,758,378 | +38.55% | |
| Snyder Capital Management L P | 3.24% | 2,396,101 | $187,542,825 | $259,833,192 | +$72,290,367 | +38.55% | |
| Dimensional Fund Advisors Lp | 0.03% | 2,089,567 | $163,542,164 | $226,592,645 | +$63,050,481 | +38.55% | |
| D. E. Shaw & Co., Inc. | 0.10% | 2,006,479 | $157,047,112 | $217,582,583 | +$60,535,471 | +38.55% | |
| Los Angeles Capital Management Llc | 0.56% | 1,938,035 | $151,690,000 | $210,160,515 | +$58,470,515 | +38.55% | |
| Royal London Asset Management Ltd | 0.26% | 1,810,815 | $141,732,491 | $196,364,779 | +$54,632,288 | +38.55% | |
| Arrowstreet Capital, Limited Partnership | 0.06% | 1,704,623 | $133,420,842 | $184,849,318 | +$51,428,476 | +38.55% | |
| Two Sigma Investments, Lp | 0.10% | 1,653,285 | $129,402,617 | $179,282,225 | +$49,879,608 | +38.55% | |
| Ubs Group Ag | 0.02% | 1,492,224 | $116,796,372 | $161,816,771 | +$45,020,399 | +38.55% | |
| Fuller & Thaler Asset Management, Inc. | 0.32% | 1,491,004 | $116,700,910 | $161,684,474 | +$44,983,564 | +38.55% | |
| Norges Bank | 0.01% | 1,483,648 | $116,125,129 | $160,886,789 | +$44,761,660 | +38.55% | |
| First Trust Advisors Lp | 0.07% | 1,417,063 | $110,913,469 | $153,666,312 | +$42,752,843 | +38.55% | |
| Lsv Asset Management | 0.20% | 1,410,257 | $110,381,000 | $152,928,269 | +$42,547,269 | +38.55% | |
| Alliancebernstein L.P. | 0.04% | 1,696,538 | $109,647,251 | $183,972,581 | +$74,325,330 | +67.79% | |
| Stephens Investment Management Group Llc | 1.17% | 1,392,819 | $109,015,943 | $151,037,292 | +$42,021,349 | +38.55% | |
| Wells Fargo & Company/Mn | 0.02% | 1,390,428 | $108,828,836 | $150,778,012 | +$41,949,176 | +38.55% | |
| Gw&K Investment Management, Llc | 0.83% | 1,353,883 | $105,969,000 | $146,815,073 | +$40,846,073 | +38.55% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,322,613 | $103,520,920 | $143,424,154 | +$39,903,234 | +38.55% | |
| Goldman Sachs Group Inc | 0.01% | 1,270,344 | $99,429,825 | $137,756,103 | +$38,326,278 | +38.55% | |
| Congress Asset Management Co | 0.59% | 1,229,106 | $96,202,127 | $133,284,255 | +$37,082,128 | +38.55% | |
| Nomura Asset Management International Inc. | 0.14% | 1,183,799 | $92,656,000 | $128,371,164 | +$35,715,164 | +38.55% | |
| Td Asset Management Inc | 0.08% | 1,115,730 | $87,328,187 | $120,989,761 | +$33,661,574 | +38.55% | |
| Epoch Investment Partners, Inc. | 0.49% | 1,098,532 | $85,982,100 | $119,124,810 | +$33,142,710 | +38.55% | |
| Northern Trust Corp | 0.01% | 1,087,613 | $85,127,470 | $117,940,754 | +$32,813,284 | +38.55% | |
| Boston Trust Walden Corp | 0.65% | 1,083,062 | $84,771,263 | $117,447,243 | +$32,675,980 | +38.55% | |
| Caisse De Depot Et Placement Du Quebec | 0.12% | 1,072,439 | $83,939,801 | $116,295,285 | +$32,355,484 | +38.55% | |
| Janus Henderson Group Plc | 0.04% | 1,233,658 | $79,741,989 | $133,777,874 | +$54,035,885 | +67.76% | |
| Assenagon Asset Management S.A. | 0.10% | 997,643 | $78,085,518 | $108,184,407 | +$30,098,889 | +38.55% | |
| Federated Hermes, Inc. | 0.11% | 962,041 | $75,298,949 | $104,323,726 | +$29,024,777 | +38.55% | |
| Bank Of Montreal | 0.03% | 942,432 | $73,764,153 | $102,197,326 | +$28,433,173 | +38.55% | |
| Mizuho Markets Cayman Lp | 2.45% | 834,500 | $65,316,315 | $90,493,180 | +$25,176,865 | +38.55% | |
| Bank Of New York Mellon Corp | 0.01% | 802,245 | $62,791,708 | $86,995,448 | +$24,203,740 | +38.55% | |
| Aqr Capital Management Llc | 0.02% | 785,556 | $61,485,452 | $85,185,693 | +$23,700,241 | +38.55% | |
| Vanguard Fiduciary Trust Co | 0.01% | 765,692 | $59,930,713 | $83,031,640 | +$23,100,927 | +38.55% | |
| Gotham Asset Management, Llc | 0.13% | 739,273 | $57,862,898 | $80,166,764 | +$22,303,866 | +38.55% | |
| Jane Street Group, Llc | 0.03% | 694,684 | $54,372,917 | $75,331,533 | +$20,958,616 | +38.55% | |
| Handelsbanken Fonder Ab | 0.14% | 631,899 | $49,459,000 | $68,523,128 | +$19,064,128 | +38.55% | |
| Sei Investments Co | 0.04% | 551,116 | $43,135,607 | $59,763,019 | +$16,627,412 | +38.55% | |
| Royal Bank Of Canada | 0.01% | 545,761 | $42,716,000 | $59,182,323 | +$16,466,323 | +38.55% | |
| Kennedy Capital Management Llc | 0.76% | 544,994 | $42,656,680 | $59,099,149 | +$16,442,469 | +38.55% | |
| Price T Rowe Associates Inc | 0.00% | 540,600 | $42,313,000 | $58,622,664 | +$16,309,664 | +38.55% |
Frequently asked questions about HALO
Who owns the most HALO stock?
The largest holders of HALO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for HALOZYME THERAPEUTICS INC (HALO).
Is HALO widely held by superinvestors?
Many widely followed stocks like HALO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly HALO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.