Arrowhead Pharmaceuticals Ownership | Who Owns Arrowhead Pharmaceuticals?
Arrowhead Pharmaceuticals Ownership Summary
Arrowhead Pharmaceuticals is owned by 75.92% institutional investors, 13.08% insiders, and 11.01% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 13.97% of ARWR shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.43% of its assets in Arrowhead Pharmaceuticals shares.
ARWR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Arrowhead Pharmaceuticals | 75.92% | 13.08% | 11.01% |
| Sector | Healthcare Stocks | 212.97% | 10.98% | -123.95% |
| Industry | Biotech Stocks | 290.86% | 10.94% | -201.80% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 19.42M | 13.97% | $306.91M |
| Blackrock | 15.68M | 12.72% | $407.61M |
| Vanguard group | 12.18M | 10.17% | $229.06M |
| Avoro capital advisors | 10.60M | 7.62% | $167.48M |
| State street | 6.02M | 4.82% | $113.11M |
| Fmr | 5.10M | 4.26% | $95.90M |
| Slate path capital lp | 5.23M | 3.76% | $82.67M |
| Geode capital management | 2.95M | 2.47% | $55.57M |
| Siren | 2.67M | 1.92% | $42.18M |
| Norges bank | 2.05M | 1.72% | $38.62M |
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 | 6.95% | $12.96M |
| Avoro capital advisors | 10.60M | 2.93% | $167.48M |
| Siren | 2.67M | 2.18% | $42.18M |
| M28 capital management lp | 67.40K | 1.82% | $1.06M |
| Privium fund management b.v. | 380.59K | 1.62% | $7.16M |
| Slate path capital lp | 5.23M | 1.43% | $82.67M |
| Johnson & johnson | 247.60K | 1.19% | $3.98M |
| Wealth effects | 165.65K | 0.98% | $2.62M |
| Sphera funds management | 203.00K | 0.75% | $3.21M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Marshall wace, llp | 2.16M | 0.04% | 2.10M |
| Norges bank | 2.05M | 0.01% | 2.05M |
| Baker bros. advisors lp | 939.17K | 0.14% | 939.17K |
| Ubs group | 1.31M | 0.00% | 863.82K |
| Morgan stanley | 1.82M | 0.00% | 679.41K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| T. rowe price investment management | 822.34K | 0.01% | -1.71M |
| Fmr | 5.10M | 0.01% | -966.49K |
| Rokos capital management llp | - | - | -939.98K |
| Orbimed advisors | - | - | -739.65K |
| E. ohman j:or asset management ab | - | - | -714.21K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 2.05M | 0.01% | 2.05M | $38.62M |
| Baker bros. advisors lp | 939.17K | 0.14% | 939.17K | $14.84M |
| Pdt partners | 152.99K | 0.14% | 152.99K | $2.42M |
| Alps advisors | 74.50K | 0.01% | 74.50K | $1.18M |
| Arrowstreet capital, limited partnership | 64.20K | 0.00% | 64.20K | $1.01M |
Sold Out
| Holder | Change |
|---|---|
| Toronto dominion bank | -3.00 |
| Financial gravity asset management | -4.00 |
| Assetmark | -6.00 |
| 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, 2025 | 293 | 6.55% | 105,554,949 | 2.21% | 75 | 1.29% | 151 | 19.84% | 79 | -2.47% |
| Mar 31, 2025 | 275 | -4.84% | 103,269,262 | 3.49% | 76 | 1.20% | 128 | -7.25% | 80 | -8.05% |
| Dec 31, 2024 | 285 | 1.42% | 99,767,650 | 4.15% | 79 | 1.25% | 133 | 7.26% | 88 | -3.30% |
| Sep 30, 2024 | 278 | -1.77% | 95,591,794 | -2.21% | 76 | 1.22% | 124 | -8.15% | 89 | 7.23% |
| Jun 30, 2024 | 282 | -1.40% | 97,756,300 | 2.92% | 79 | 1.34% | 135 | -7.53% | 82 | 7.89% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 7.50M | 5.43% | 1.15K |
| iShares Core S&P Mid-Cap ETF | 4.05M | 3.25% | 13.43K |
| Vanguard Total Stock Mkt Idx Inv | 3.87M | 2.80% | 428.47K |
| Vanguard US Total Market Shares ETF | 3.70M | 2.70% | 3.98K |
| Vanguard Small Cap Index | 2.87M | 2.08% | 166.52K |
| iShares Russell 2000 ETF | 2.83M | 2.05% | -53.87K |
| Fidelity Growth Compy Commingled Pl S | 2.28M | 1.65% | 369.45K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.94M | 1.40% | -24.85K |
| SPDR® S&P Biotech ETF | 1.72M | 1.25% | 42.46K |
| Fidelity Growth Company Fund | 1.63M | 1.18% | 276.20K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 13, 2025 | Hamilton James C | Chief Medical Officer | Sell | $12.22K |
| Aug 15, 2025 | Hamilton James C | Chief Medical Officer | Sell | $187.78K |
| Apr 09, 2025 | Anzalone Christopher Richard | Chief Executive Officer | Sell | $36.55K |
| Apr 09, 2025 | Anzalone Christopher Richard | Chief Executive Officer | Sell | $350.58K |
| Apr 09, 2025 | Anzalone Christopher Richard | Chief Executive Officer | Sell | $19.02K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 2 |
| 2025 Q2 | - | 5 |
| 2025 Q1 | - | 14 |
| 2024 Q4 | - | 10 |
| 2024 Q3 | - | 1 |
ARWR Ownership FAQ
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