ARROWHEAD PHARMACEUTICALS, INC. - Common Stock (ARWR)
CUSIP: 04280A100
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 135,488,140
- Total 13F shares
- 28,621
- Share change
- +24,427
- Total reported value
- $1,794,537
- Price per share
- $62.70
- Number of holders
- 2
- Value change
- +$1,531,573
- Number of buys
- 1
- Number of sells
- 1
Quarterly Holders Quick Answers
What is CUSIP 04280A100?
CUSIP 04280A100 identifies ARWR - ARROWHEAD PHARMACEUTICALS, INC. - Common Stock in SEC institutional holdings data.
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Related Filing Research
- Latest 13F filings for newly reported positions.
- Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
- Latest 10-Q/10-K reports for financial context tied to this issuer.
- Recent insider transactions for executive and insider activity.
- SEC investors directory and top value investors for manager drilldown.
- Back to full security ownership history.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 04280A100:
Top shareholders of ARWR - ARROWHEAD PHARMACEUTICALS, INC. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
15%
from 13D/G
|
21,318,582
|
$1,415,340,659 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
11%
|
15,293,121
|
$1,015,310,304 | — | 31 Dec 2025 | |
| Avoro Capital Advisors LLC |
13F
13D/G
|
Company |
8.3%
from 13D/G
|
10,625,000
|
$705,393,750 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
4.8%
|
6,520,408
|
$432,889,919 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
13D/G
|
Company · STATE STREET CORPORATION |
4.6%
from 13D/G
|
6,403,830
|
$425,150,274 | — | 31 Dec 2025 | |
| Christopher Richard Anzalone |
3/4/5
|
Chief Executive Officer, Director |
2.8%
|
3,792,739
|
$251,799,942 | -$25,543,901 | 02 Jan 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.4%
|
3,264,963
|
$216,798,525 | — | 31 Dec 2025 | |
| Slate Path Capital LP |
13F
|
Company |
1.9%
|
2,523,500
|
$167,535,165 | — | 31 Dec 2025 | |
| BAKER BROS. ADVISORS LP |
13F
|
Company |
1.6%
|
2,175,645
|
$144,441,072 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
1.5%
|
2,087,953
|
$138,619,200 | — | 31 Dec 2025 | |
| FRED ALGER MANAGEMENT, LLC |
13F
|
Company |
1.4%
|
1,832,997
|
$121,692,671 | — | 31 Dec 2025 | |
| DEERFIELD MANAGEMENT COMPANY, L.P. |
13F
|
Company |
1.4%
|
1,832,946
|
$121,689,285 | — | 31 Dec 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.3%
|
1,769,340
|
$117,466,483 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.3%
|
1,704,464
|
$113,159,365 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.2%
|
1,677,522
|
$111,370,685 | — | 31 Dec 2025 | |
| Siren, L.L.C. |
13F
|
Individual |
1.1%
|
1,500,476
|
$99,616,602 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
1,476,005
|
$97,992,146 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1%
|
1,353,719
|
$89,873,404 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.99%
|
1,346,257
|
$89,378,003 | — | 31 Dec 2025 | |
| Fisher Asset Management, LLC |
13F
|
Company |
0.97%
|
1,311,727
|
$87,085,554 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
0.95%
|
1,280,446
|
$84,997,093 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.93%
|
1,260,380
|
$83,676,628 | — | 31 Dec 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
0.76%
|
1,028,736
|
$68,635,932 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.73%
|
987,287
|
$65,545,984 | — | 31 Dec 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
0.66%
|
900,000
|
$59,751,000 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.66%
|
887,848
|
$58,944,211 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.62%
|
838,818
|
$55,690,000 | — | 31 Dec 2025 | |
| Western Financial Corp/CA |
13F
|
Company |
0.61%
|
820,239
|
$54,455,667 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.53%
|
715,539
|
$47,504,634 | — | 31 Dec 2025 | |
| Assenagon Asset Management S.A. |
13F
|
Company |
0.51%
|
684,889
|
$45,469,781 | — | 31 Dec 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.49%
|
663,262
|
$44,033,964 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.46%
|
622,029
|
$41,296,505 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.45%
|
611,910
|
$40,624,705 | — | 31 Dec 2025 | |
| RTW INVESTMENTS, LP |
13F
|
Company |
0.43%
|
584,716
|
$38,819,295 | — | 31 Dec 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
0.41%
|
550,000
|
$36,514,500 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.4%
|
547,758
|
$36,365,654 | — | 31 Dec 2025 | |
| Patrick O'Brien |
3/4/5
|
COO |
0.4%
|
547,408
|
$36,342,471 | -$3,123,349 | 06 Jan 2026 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.35%
|
478,514
|
$31,768,544 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.35%
|
474,259
|
$31,486,055 | — | 31 Dec 2025 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC |
13F
|
Company |
0.35%
|
470,000
|
$31,203,300 | — | 31 Dec 2025 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.31%
|
422,731
|
$28,065,111 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
0.3%
|
400,184
|
$26,568,216 | — | 31 Dec 2025 | |
| Privium Fund Management B.V. |
13F
|
Company |
0.29%
|
398,204
|
$26,436,764 | — | 31 Dec 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.29%
|
395,311
|
$26,244,697 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.28%
|
376,216
|
$24,976,980 | — | 31 Dec 2025 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
0.28%
|
375,371
|
$24,920,881 | — | 31 Dec 2025 | |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
|
Company |
0.27%
|
370,000
|
$24,564,300 | — | 31 Dec 2025 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.26%
|
352,395
|
$23,395,468 | — | 31 Dec 2025 | |
| NORDEA INVESTMENT MANAGEMENT AB |
13F
|
Company |
0.24%
|
324,251
|
$21,565,934 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.24%
|
321,833
|
$21,366,492 | — | 31 Dec 2025 |
Institutional Holders of ARROWHEAD PHARMACEUTICALS, INC. - Common Stock (ARWR) as of Q1 2026
As of 31 Mar 2026,
ARROWHEAD PHARMACEUTICALS, INC. - Common Stock (ARWR) was held by
2 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
28,621 shares.
The largest 3 holders included
Washington Trust Advisors, Inc., GAMMA Investing LLC, and Versant Capital Management, Inc.
This page lists
3
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
397
Q1 2026 holders
2
Holder diff
-395
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.