Who Owns Arrowhead Pharmaceuticals, Inc. (ARWR)?Hedge Fund & Institutional Holders

$55.17+0.16 (+0.29%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$1.0100009400627055e+256T

% of Float Held

Infinity%

QoQ Change in Holders

+14 / -0

Price History

$9.99$25.74$41.49$57.25$73.00Sep 24Jun 25Mar 26

ARWR — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
NORGES BANKNew Position+1.7M+$113.0M
Vestal Point Capital, LPNew Position+900K+$59.8M
Bank of New York Mellon CorpNew Position+888K+$55.0M
Western Financial Corp/CANew Position+820K+$54.5M
PRICE T ROWE ASSOCIATES INC /MD/Increased+729K+$51.2M
PRINCIPAL FINANCIAL GROUP INCNew Position+716K+$47.5M
RTW INVESTMENTS, LPNew Position+585K+$38.8M
ADAGE CAPITAL PARTNERS GP, L.L.C.New Position+550K+$36.0M
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLCNew Position+470K+$31.2M
Privium Fund Management B.V.New Position+398K+$26.4M
EVENTIDE ASSET MANAGEMENT, LLCNew Position+370K+$24.6M
Alyeska Investment Group, L.P.New Position+375K+$24.0M
NORDEA INVESTMENT MANAGEMENT ABNew Position+324K+$21.6M
FengHe Fund Management Pte. Ltd.New Position+267K+$17.7M
Trexquant Investment LPNew Position+251K+$16.7M

ARWR — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
VANGUARD GROUP INCDecreased-743K-$552.1B
Avoro Capital Advisors LLCDecreased-275K-$375.2B
Slate Path Capital LPDecreased-2.5M-$171.7B
Siren, L.L.C.Decreased-1.2M-$92.0B
DRIEHAUS CAPITAL MANAGEMENT LLCDecreased-330K-$72.3B
GOLDMAN SACHS GROUP INCDecreased-96K-$61.1B
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLCDecreased-499K-$60.6B
MORGAN STANLEYDecreased-227K-$58.6B
MARSHALL WACE, LLPDecreased-1.3M-$49.5B
Woodline Partners LPDecreased-600K-$34.5B
BALYASNY ASSET MANAGEMENT L.P.Decreased-417K-$27.3B
JPMORGAN CHASE & CODecreased-164K-$26.7B
BANK OF AMERICA CORP /DE/Decreased-139K-$26.2B
Schonfeld Strategic Advisors LLCDecreased-524K-$18.8B
PUBLIC SECTOR PENSION INVESTMENT BOARDDecreased-61K-$18.6B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1BlackRock, Inc.15,220,657$1.0B0.02%Share
2VANGUARD GROUP INC14,159,706$940.1M0.01%Share
3Avoro Capital Advisors LLC10,625,000$705.4M6.93%Share
4STATE STREET CORP6,403,830$425.0M0.01%Share
5BlackRock, Inc.4,107,651$272.0M0.00%Share
6FMR LLC3,808,595$252.0M0.01%Share
7GEODE CAPITAL MANAGEMENT, LLC2,825,796$187.0M0.01%Share
8FMR LLC2,707,861$179.0M0.01%Share
9Slate Path Capital LP2,523,500$167.5M2.26%Share
10BAKER BROS. ADVISORS LP2,175,645$144.4M0.85%Share
11ARROWSTREET CAPITAL, LIMITED PARTNERSHIP2,087,953$138.0M0.08%Share
12DEERFIELD MANAGEMENT COMPANY, L.P.1,832,946$121.7M1.55%Share
13FRED ALGER MANAGEMENT, LLC1,832,997$121.0M0.47%Share
14DRIEHAUS CAPITAL MANAGEMENT LLC1,769,340$117.5M0.80%Share
15NORGES BANK1,704,464$113.0M0.01%Share
16Siren, L.L.C.1,500,476$99.6M2.97%Share
17CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,353,719$89.0M0.01%Share
18Fisher Asset Management, LLC1,311,727$87.0M0.03%Share
19JANUS HENDERSON GROUP PLC1,222,701$81.0M0.04%Share
20GOLDMAN SACHS GROUP INC1,212,724$80.0M0.01%Share
21NORTHERN TRUST CORP1,154,002$76.0M0.01%Share
22Pictet Asset Management Holding SA1,028,736$68.6M0.07%Share
23VANGUARD GROUP INC935,799$62.1M0.00%Share
24M&T BANK CORP234,658$60.3M0.19%Share
25Vestal Point Capital, LP900,000$59.8M2.03%Share
26SUSQUEHANNA INTERNATIONAL GROUP, LLP859,900$57.0M0.01%Call
27Western Financial Corp/CA820,239$54.5M21.60%Share
28PRICE T ROWE ASSOCIATES INC /MD/713,067$47.0M0.01%Share
29PRINCIPAL FINANCIAL GROUP INC707,710$47.0M0.02%Share
30Assenagon Asset Management S.A.684,889$45.5M0.06%Share
31UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC685,997$45.0M0.01%Share
32Connor, Clark & Lunn Investment Management Ltd.663,262$44.0M0.12%Share
33UBS Group AG640,550$42.5M0.01%Share
34MORGAN STANLEY640,901$42.0M0.00%Share
35RTW INVESTMENTS, LP584,716$38.8M0.39%Share
36ADAGE CAPITAL PARTNERS GP, L.L.C.550,000$36.0M0.05%Share
37BlackRock, Inc.544,752$36.0M0.00%Share
38BANK OF AMERICA CORP /DE/544,260$36.0M0.00%Share
39UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC518,766$34.0M0.01%Share
40MORGAN STANLEY490,334$32.0M0.00%Share
41SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC470,000$31.2M0.65%Share
42CITADEL ADVISORS LLC474,259$31.0M0.00%Share
43PUBLIC SECTOR PENSION INVESTMENT BOARD478,514$31.0M0.10%Share
44BlackRock, Inc.456,634$30.0M0.00%Share
45GOLDMAN SACHS GROUP INC459,888$30.0M0.00%Share
46GEODE CAPITAL MANAGEMENT, LLC439,167$29.0M0.00%Share
47Invesco Ltd.434,989$28.9M0.00%Share
48BlackRock, Inc.415,400$27.0M0.00%Share
49Privium Fund Management B.V.398,204$26.4M4.87%Share
50Woodline Partners LP400,184$26.0M0.10%Share

ARWR Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025399$7.6B+186
Q3 2025213$3.6T-22
Q2 2025235$1.3T-24
Q1 2025259$1.3T+5
Q4 2024254$7.7T+33
Q3 2024221$1493.1T+1
Q2 2024220$1593.8T+12
Q1 2024208$1689.1T—

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As of Q4 2025, 50 institutional investors hold ARWR (Arrowhead Pharmaceuticals, Inc.). The largest holder is BlackRock, Inc. with $1.0B in shares. This quarter, 14 institutions opened new positions and 0 closed their positions.

Frequently Asked Questions

How many hedge funds own ARWR?

As of Q4 2025, 50 institutional investors report holding ARWR (Arrowhead Pharmaceuticals, Inc.) in their 13F filings.

Who is the largest institutional holder of ARWR?

The largest institutional holder of ARWR is BlackRock, Inc. with $1.0B in shares.

Is institutional ownership of ARWR increasing or decreasing?

This quarter, 14 institutions opened new positions in ARWR and 0 closed their positions.