Company · Ownership research

ARROWHEAD PHARMACEUTICALS, INC. ARWR

CIK 0000879407 · CUSIP 04280A100

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 04280A100 (ARWR), not CUSIP 04280A900 (ARWR), CUSIP 04280A950 (ARWR), and does not merge CUSIPs.

This page lists the top 20 of 199 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$234.50M 3,458,467 shares	0.01%	-72.14K(-2.00%)Reduced	SEC filing ↗ Nov 6, 2026	▾
02	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$70.01M 1,069,701 shares	0.01%	-111.91K(-9.50%)Reduced	SEC filing ↗ Nov 4, 2026	▾
03	Fisher Asset Management, LLC CIK 850529 · View history	$58.49M 893,700 shares	0.02%	-63.99K(-6.70%)Reduced	SEC filing ↗ Nov 6, 2026	▾
04	Bank of New York Mellon Corp CIK 1390777 · View history	$54.03M 825,460 shares	0.01%	-34.08K(-4.00%)Reduced	SEC filing ↗ Nov 5, 2026	▾
05	Western Financial Corp/CA CIK 1954480 · View history	$53.68M 820,239 shares	17.87%	0(0.00%)Unchanged	SEC filing ↗ Oct 14, 2026	▾
06	Pictet Asset Management Holding SA CIK 1993888 · View history	$50.21M 767,192 shares	0.05%	+193.77K(+33.80%)Added	SEC filing ↗ Nov 3, 2026	▾
07	Aberdeen Group plc CIK 1716774 · View history	$27.04M 413,104 shares	0.04%	+161.14K(+64.00%)Added	SEC filing ↗ Nov 6, 2026	▾
08	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$24.04M 367,315 shares	0.01%	-147.34K(-28.60%)Reduced	SEC filing ↗ Nov 2, 2026	▾
09	LPL Financial LLC CIK 1403438 · View history	$21.93M 335,023 shares	0.00%	+24.26K(+7.80%)Added	SEC filing ↗ Nov 6, 2026	▾
10	CITIGROUP INC CIK 831001 · View history	$19.82M 302,842 shares	0.01%	+38.16K(+14.40%)Added	SEC filing ↗ Nov 4, 2026	▾
11	BARCLAYS PLC CIK 312069 · View history	$16.04M 245,119 shares	0.01%	+158.34K(+182.50%)Added	SEC filing ↗ Nov 6, 2026	▾
12	Privium Fund Management B.V. CIK 1795097 · View history	$14.13M 215,818 shares	2.74%	-18.40K(-7.90%)Reduced	SEC filing ↗ Nov 3, 2026	▾
13	Russell Investments Group, Ltd. CIK 1692234 · View history	$12.95M 197,921 shares	0.01%	-86.17K(-30.30%)Reduced	SEC filing ↗ Nov 6, 2026	▾
14	PINNACLE ASSOCIATES LTD CIK 743127 · View history	$12.19M 186,267 shares	0.14%	+16.14K(+9.50%)Added	SEC filing ↗ Oct 20, 2026	▾
15	MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC CIK 922127 · View history	$11.34M 173,286 shares	0.11%	-18.15K(-9.50%)Reduced	SEC filing ↗ Oct 23, 2026	▾
16	DEUTSCHE BANK AG\ CIK 948046 · View history	$10.97M 167,606 shares	0.00%	+18.37K(+12.30%)Added	SEC filing ↗ Nov 6, 2026	▾
17	SEB Asset Management AB CIK 2127509 · View history	$9.69M 147,984 shares	0.04%	-10.22K(-6.50%)Reduced	SEC filing ↗ Nov 4, 2026	▾
18	WEALTH EFFECTS LLC CIK 1907254 · View history	$9.63M 147,200 shares	2.61%	-100(-0.10%)Reduced	SEC filing ↗ Oct 23, 2026	▾
19	Retirement Systems of Alabama CIK 1593051 · View history	$9.54M 145,697 shares	0.03%	+10(0.00%)Added	SEC filing ↗ Nov 4, 2026	▾
20	NEW YORK STATE TEACHERS RETIREMENT SYSTEM CIK 314969 · View history	$7.63M 116,648 shares	0.01%	-300(-0.30%)Reduced	SEC filing ↗ Oct 22, 2026	▾

Showing 20 / 199 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

199

Cancelled or null records excluded

Disclosed shares

12,877,148

Not deduplicated across managers

Disclosed value

$850.80M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ARROWHEAD PHARMACEUTICALS, INC. · Q3 2026

Explore all 199 reporting institutions.

This page includes 20 of 199 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.