Arrowhead Pharmaceuticals Ownership | Who Owns Arrowhead Pharmaceuticals?
Arrowhead Pharmaceuticals Ownership Summary
Arrowhead Pharmaceuticals is owned by 84.30% institutional investors, 3.67% insiders, and 12.03% retail investors. Blackrock is the largest institutional shareholder, holding 12.72% of ARWR shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.41% of its assets in Arrowhead Pharmaceuticals shares.
ARWR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Arrowhead Pharmaceuticals | 84.30% | 3.67% | 12.03% |
| Sector | Healthcare Stocks | 245.07% | 12.10% | -157.17% |
| Industry | Biotech Stocks | 380.48% | 11.73% | -292.21% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 15.68M | 12.72% | $407.61M |
| Vanguard group | 15.29M | 11.27% | $1.02B |
| Blackrock funding, inc. /de | 14.83M | 10.41% | $1.21B |
| Avoro capital advisors | 11.36M | 7.97% | $925.59M |
| Fmr | 8.04M | 5.65% | $655.32M |
| Vanguard capital management | 6.11M | 4.29% | $498.10M |
| State street | 5.69M | 4.00% | $464.17M |
| Norges bank | 3.90M | 2.74% | $317.61M |
| Invesco | 3.88M | 2.73% | $316.58M |
| Geode capital management | 3.53M | 2.48% | $298.81M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Aquilo capital management | 707.59K | 20.06% | $13.30M |
| Western financial corp/ca | 820.24K | 19.58% | $66.86M |
| Avoro capital advisors | 11.36M | 8.31% | $925.59M |
| M28 capital management lp | 36.85K | 6.37% | $3.00M |
| Act capital management | 110.10K | 5.86% | $8.97M |
| Privium fund management b.v. | 234.22K | 3.51% | $19.09M |
| Wealth effects | 147.30K | 3.24% | $12.01M |
| Vestal point capital, lp | 1.57M | 3.00% | $128.38M |
| Siren | 1.72M | 2.83% | $139.83M |
| Evolutionary tree capital management | 14.37K | 2.21% | $1.17M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Norges bank | 3.90M | 0.03% | 3.90M |
| First trust advisors lp | 1.35M | 0.06% | 1.20M |
| Holocene advisors, lp | 1.11M | 0.20% | 1.11M |
| Sixth street partners management company | 923.93K | 0.01% | 923.93K |
| Fmr | 8.04M | 0.03% | 773.15K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 14.83M | 0.02% | -3.33M |
| Slate path capital lp | - | - | -2.52M |
| Rokos capital management llp | - | - | -939.98K |
| T. rowe price investment management | - | - | -822.34K |
| State street | 5.69M | 0.01% | -801.49K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 3.90M | 0.03% | 3.90M | $317.61M |
| Holocene advisors, lp | 1.11M | 0.20% | 1.11M | $90.16M |
| Sixth street partners management company | 923.93K | 0.01% | 923.93K | $75.31M |
| 1832 asset management | 538.50K | 0.02% | 538.50K | $43.89M |
| Hrt financial lp | 498.65K | 0.07% | 498.65K | $40.65M |
Sold Out
| Holder | Change |
|---|---|
| Financial gravity asset management | -4.00 |
| Abound wealth management | -8.00 |
| National bank of canada /fi/ | -10.00 |
| Innealta capital | -11.00 |
| Advisornet financial | -12.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 517 | 12.39% | 120,057,918 | -0.61% | 84 | 1.13% | 278 | 0.36% | 160 | 36.75% |
| Mar 31, 2026 | 447 | 6.18% | 119,350,186 | 2.88% | 85 | 1.24% | 266 | 3.91% | 116 | 5.45% |
| Dec 31, 2025 | 134 | -57.32% | 23,726,403 | -78.62% | 17 | 0.27% | 82 | -51.19% | 34 | -58.54% |
| Sep 30, 2025 | 128 | -57.19% | 25,567,183 | -75.82% | 18 | 0.32% | 64 | -58.97% | 30 | -62.50% |
| Jun 30, 2025 | 293 | 6.55% | 105,554,949 | 2.21% | 75 | 1.29% | 151 | 19.84% | 79 | -2.47% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 7.47M | 5.41% | - |
| iShares Core S&P Mid-Cap ETF | 4.84M | 3.43% | 149.00 |
| Vanguard MStar Total Stk Mkt Idx Invest | 4.26M | 3.02% | 12.71K |
| Vanguard Total Stock Mkt Idx Inv | 4.25M | 3.02% | 12.94K |
| Vanguard Morn Total Stk Mkt Idx Investor | 4.25M | 3.02% | 12.94K |
| Vanguard US Total Market Shares ETF | 3.70M | 2.70% | 3.98K |
| iShares Russell 2000 ETF | 3.24M | 2.30% | 29.90K |
| Fidelity Growth Compy Commingled Pl S | 3.22M | 2.28% | 100.00K |
| Vanguard Small Cap Index | 3.08M | 2.18% | 6.51K |
| Fidelity Growth Company Fund | 2.43M | 1.72% | 71.70K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 18, 2026 | OLUKOTUN ADEOYE Y | - | Sell | $173.92K |
| Aug 18, 2026 | PERRY MICHAEL S | - | Sell | $1.01M |
| May 12, 2026 | Lu Hongbo | - | Sell | $228.33K |
| Apr 22, 2026 | Apel Daniel Joseph | Chief Financial Officer | Sell | $627.86K |
| Apr 22, 2026 | Apel Daniel Joseph | Chief Financial Officer | Sell | $224.91K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 2 |
| 2026 Q2 | - | 5 |
| 2026 Q1 | - | 22 |
| 2025 Q4 | - | 36 |
| 2025 Q3 | - | 4 |
ARWR Ownership FAQ
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