HALO

Halozyme Therapeutics Inc
Health CareUSCUSIP 40637H109◍ Confluence graph
Tracked 13F Holders
568
-174 QoQ
13F Value (tracked)
$7.5B
Insider Net · 180d
-$19.5M
0↑ 4↓
Recent Filings
15
Smart-money sentimentBearish
BearishBullish
13F funds (latest Q)29 adding · 25 trimming
Insider net (180d)-$19.5M

Who owns HALO?

568 tracked 13F filers

568 tracked 13F filers disclose a position in HALO as of the latest SEC 13F filings, a combined $7.5B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
2 source-reported value rows are withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$857.3M
13.3M
+0.8%
Added · +111K sh
Q1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$340.7M
5.3M
First observed position
No prior filed position
Q1 2026
3VANGUARD PORTFOLIO MANAGEMENT LLC
$339.3M
5.2M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$405.4M
5.2M
+4.9%
Added · +242K sh
Q2 2026
5BANK OF AMERICA CORP /DE/
$188.3M
2.9M
+6.5%
Added · +179K sh
Q1 2026
6Boston Partners
$173.4M
2.7M
+451%
Added · +2.2M sh
Q1 2026
7MORGAN STANLEY
$165.6M
2.6M
−3.6%
Reduced · −96K sh
Q1 2026
8GEODE CAPITAL MANAGEMENT, LLC
$197.3M
2.5M
+0.6%
Added · +14K sh
Q2 2026
9WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
$196.5M
2.5M
−0.6%
Reduced · −15K sh
Q2 2026
10SNYDER CAPITAL MANAGEMENT L P
$187.5M
2.4M
+3.1%
Added · +73K sh
Q2 2026
11DIMENSIONAL FUND ADVISORS LP
$134.4M
2.1M
−1.1%
Reduced · −24K sh
Q1 2026
12LOS ANGELES CAPITAL MANAGEMENT LLC
$151.7M
1.9M
+181%
Added · +1.2M sh
Q2 2026
13ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
$124.0M
1.9M
−40%
Reduced · −1.3M sh
Q1 2026
14NORGES BANK
$128.2M
1.9M
+120%
Added · +1.0M sh
Q4 2025
15D. E. Shaw & Co., Inc.
$120.8M
1.9M
+13%
Added · +219K sh
Q1 2026
16ROYAL LONDON ASSET MANAGEMENT LTD
$141.7M
1.8M
+12%
Added · +200K sh
Q2 2026
17ALLIANCEBERNSTEIN L.P.
$116.9M
1.7M
−5.4%
Reduced · −99K sh
Q1 2026
18TWO SIGMA INVESTMENTS, LP
$102.4M
1.6M
+121%
Added · +868K sh
Q1 2026
19WELLS FARGO & COMPANY/MN
$99.3M
1.5M
+9.3%
Added · +130K sh
Q1 2026
20FULLER & THALER ASSET MANAGEMENT, INC.
$116.7M
1.5M
+1.8%
Added · +26K sh
Q2 2026
21FIRST TRUST ADVISORS LP
$95.8M
1.5M
+47%
Added · +471K sh
Q1 2026
22Stephens Investment Management Group LLC
$109.0M
1.4M
+14%
Added · +174K sh
Q2 2026
23CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$83.3M
1.3M
+3.8%
Added · +48K sh
Q1 2026
24CONGRESS ASSET MANAGEMENT CO
$82.8M
1.3M
−1.6%
Reduced · −22K sh
Q1 2026
25JANUS HENDERSON GROUP PLC
$79.7M
1.2M
+43%
Added · +370K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is HALO being bought or sold by institutions?

Last quarter, 2 funds opened a new position in HALO and 27 added to an existing one, while 25 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
2
funds
Added
27
funds
Reduced
25
funds
Exited
0
funds

Funds that own HALO also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT348 funds$278.7B
AMAZON.COM INCAMZN344 funds$207.5B
NVIDIA CORPNVDA340 funds$404.0B
META PLATFORMS INC-CLASS AMETA337 funds$113.2B
ALPHABET INC-CL AGOOGL336 funds$174.4B
APPLE INCAAPL335 funds$313.3B
BROADCOM INCAVGO328 funds$161.4B
JPMORGAN CHASE & COJPM327 funds$69.5B
ELI LILLY & COLLY326 funds$81.1B
JOHNSON & JOHNSONJNJ319 funds$48.2B
VISA INC-CLASS A SHARESV316 funds$63.8B
COSTCO WHOLESALE CORPCOST314 funds$40.6B

Ranked by how many of HALO's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$19.5M
4 insiders
Net
-$19.5M
49 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Aug 19, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)3K$345K
Aug 19, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)10K$1.0M
Aug 19, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)7K$766K
Aug 18, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)9K$986K
Aug 18, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)5K$510K
Aug 18, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)6K$588K
Aug 17, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)8K$776K
Aug 17, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)9K$923K
Aug 17, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)2K$214K
Aug 17, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)500$50K
Aug 17, 2026Torley HelenPRESIDENT AND CEO, DirectorSell (S)900$89K
Aug 10, 2026Connaughton BernadetteDirectorSell (S)2K$167K

Institutional ownership over time

361 funds+1 since Q3 2024
0268535Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $2.2B · 1 values withheld

Share classes

Class13F holdersValue held
HALOthis pagecs568 funds$7.5B
HALO 1 08/15/28Sovereign/Corporate50 funds$547.4M
HALO 0.25 03/01/27NOTE 0.250% 3/048 funds$196.7M
40637H909CALL1 funds$552K

Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.

Recent filings

15 shown

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Connected entities for HALO

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Ask your agent what changed in HALO

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/HALO/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for HALO.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for HALO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.