# ARROWHEAD PHARMACEUTICALS IN COM

ARROWHEAD PHARMACEUTICALS IN COM is a security (CUSIP 04280A100) tracked across SEC portfolio filings. 488 institutional managers reported $7.7B on Form 13F as of 2026-06-30; 49 registered fund positions totaling $854.1M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ARROWHEAD PHARMACEUTICALS IN
- Class: COM
- CUSIP: 04280A100
- Asset category: EC
- 13F holders: 488
- 13F value: $7.7B
- 13F period: 2026-06-30
- N-PORT fund positions: 49
- N-PORT value: $854.1M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 488 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $1.2B | 14,830,553 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.0B | 15,293,121 |
| [Avoro Capital Advisors LLC](https://search.stillhousedata.com/firm/154091) | New York, NY | $670.9M | 10,699,999 |
| STATE STREET CORP | BOSTON, MA | $464.2M | 5,694,640 |
| FMR LLC | BOSTON, MA | $455.6M | 7,266,652 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $274.5M | 4,278,828 |
| [FRED ALGER MANAGEMENT, LLC](https://search.stillhousedata.com/firm/106750) | NEW YORK, NY | $209.6M | 3,342,493 |
| Vestal Point Capital, LP | NEW YORK, NY | $142.6M | 2,275,000 |
| [BAKER BROS. ADVISORS LP](https://search.stillhousedata.com/firm/158149) | NEW YORK, NY | $124.9M | 1,992,783 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $115.1M | 378,833 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $109.1M | 1,739,923 |
| NORTHERN TRUST CORP | CHICAGO, IL | $103.8M | 1,655,837 |
| Siren, L.L.C. | New York, NY | $101.3M | 1,615,476 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | New York, NY | $98.6M | 1,573,297 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $90.1M | 1,436,990 |

## Top fund holders (N-PORT)

_Showing 15 of 49 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $264.7M | 109.30% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $184.1M | 18.63% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $98.0M | 12.02% |
| [ALGER FOCUS EQUITY FUND](https://search.stillhousedata.com/fund/S000009201) | ALGER INSTITUTIONAL FUNDS | $60.9M | 99.72% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $54.1M | 30.89% |
| [ALGER SPECTRA FUND](https://search.stillhousedata.com/fund/S000009190) | ALGER FUNDS II | $35.6M | 82.91% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $20.6M | 9.48% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $18.9M | 17.34% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $16.4M | 74.08% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $14.3M | 14.16% |
| abrdn Healthcare Investors | abrdn Healthcare Investors | $13.8M | 121.71% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $13.7M | 28.44% |
| abrdn Life Sciences Investors | abrdn Life Sciences Investors | $9.0M | 160.17% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $7.8M | 30.67% |
| [VOYA SMALL COMPANY PORTFOLIO](https://search.stillhousedata.com/fund/S000008709) | Voya VARIABLE PORTFOLIOS INC | $5.8M | 316.45% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/04280A100.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.