Arrowhead Pharmaceuticals Ownership | Who Owns Arrowhead Pharmaceuticals?
Arrowhead Pharmaceuticals Ownership Summary
Arrowhead Pharmaceuticals is owned by 85.22% institutional investors, 3.76% insiders, and 11.02% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 12.97% 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 | 85.22% | 3.76% | 11.02% |
| Sector | Healthcare Stocks | 35.38% | 11.35% | 53.27% |
| Industry | Biotech Stocks | 33.91% | 11.39% | 54.70% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 18.16M | 12.97% | $1.14B |
| Blackrock | 15.68M | 12.72% | $407.61M |
| Vanguard group | 15.29M | 11.27% | $1.02B |
| Avoro capital advisors | 10.70M | 7.64% | $670.89M |
| Fmr | 7.27M | 5.19% | $455.62M |
| State street | 6.50M | 4.64% | $407.31M |
| Geode capital management | 4.28M | 3.06% | $274.50M |
| Fred alger management | 3.34M | 2.39% | $209.57M |
| Invesco | 3.28M | 2.34% | $205.70M |
| Vestal point capital, lp | 2.27M | 1.62% | $142.64M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Western financial corp/ca | 820.24K | 20.13% | $51.43M |
| Aquilo capital management | 707.59K | 20.06% | $13.30M |
| Avoro capital advisors | 10.70M | 6.60% | $670.89M |
| Privium fund management b.v. | 366.94K | 4.79% | $23.01M |
| M28 capital management lp | 36.85K | 4.29% | $2.31M |
| Act capital management | 82.50K | 4.07% | $5.17M |
| Vestal point capital, lp | 2.27M | 3.99% | $142.64M |
| Wealth effects | 143.30K | 3.18% | $8.98M |
| Siren | 1.62M | 2.81% | $101.29M |
| Tfg asset management gp | 127.20K | 1.55% | $7.98M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Invesco | 3.28M | 0.03% | 2.73M |
| Norges bank | 1.70M | 0.01% | 1.70M |
| Fred alger management | 3.34M | 0.92% | 1.51M |
| Vestal point capital, lp | 2.27M | 3.99% | 1.38M |
| Hood river capital management | 1.06M | 0.66% | 1.06M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 18.16M | 0.02% | -3.16M |
| Slate path capital lp | - | - | -2.52M |
| Arrowstreet capital, limited partnership | 587.13K | 0.02% | -1.50M |
| Rokos capital management llp | - | - | -939.98K |
| T. rowe price investment management | - | - | -822.34K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.70M | 0.01% | 1.70M | $113.16M |
| Hood river capital management | 1.06M | 0.66% | 1.06M | $66.24M |
| Renaissance | 1.04M | 0.10% | 1.04M | $64.99M |
| Vanguard fiduciary trust | 965.77K | 0.02% | 965.77K | $60.55M |
| Lord, abbett | 312.82K | 0.06% | 312.82K | $19.61M |
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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Mar 31, 2025 | 275 | -4.84% | 103,269,262 | 3.49% | 76 | 1.20% | 128 | -7.25% | 80 | -8.05% |
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 | 4.73M | 3.44% | -2.38K |
| Vanguard Total Stock Mkt Idx Inv | 4.23M | 3.02% | 141.71K |
| Vanguard US Total Market Shares ETF | 3.70M | 2.70% | 3.98K |
| iShares Russell 2000 ETF | 3.18M | 2.32% | 26.84K |
| Vanguard Small Cap Index | 3.07M | 2.19% | 140.75K |
| Fidelity Growth Compy Commingled Pl S | 2.92M | 2.13% | 149.84K |
| Fidelity Growth Company Fund | 2.21M | 1.58% | 204.20K |
| SPDR® S&P Biotech ETF | 1.73M | 1.25% | 3.86K |
| Vanguard Small Cap Growth Index Inv | 1.72M | 1.23% | 91.86K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| 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 | $81.51K |
| Apr 22, 2026 | Apel Daniel Joseph | Chief Financial Officer | Sell | $224.91K |
| Apr 23, 2026 | Hamilton James C | Chief Medical Officer | Sell | $750.00K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 5 |
| 2026 Q1 | - | 22 |
| 2025 Q4 | - | 36 |
| 2025 Q3 | - | 4 |
| 2025 Q2 | - | 5 |
ARWR Ownership FAQ
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