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Of the 13 tracked institutions holding ARWR, 5 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +4.9pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, ARWR (ARROWHEAD PHARMACEUTICALS IN) is held with a combined value of $3.74B across 48,722,029 shares. The largest holder is BlackRock, Inc. with a position worth $1.21B (0.02% of their portfolio). MILLENNIUM MANAGEMENT LLC opened a new position in the most recent quarter. 2 funds increased their holdings. 9 funds reduced their position.
Total Institutional Value
$3.74B
Total Shares Held
48,722,029
Institutional Holders
13
% of Shares Outstanding
34.5%
of 141.25M shares · SEC 2026-07-30
Days to Cover
7.8-4.7%
9.21M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 34.5% of ARWR's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-30), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $1.21B | 0.02% | -18.3% |
| 2 | VANGUARD GROUP INC | $1.02B | 0.01% | -4.6% |
| 3 | FMR LLC | $655.32M | 0.03% | +10.6% |
| 4 | STATE STREET CORP | $464.17M | 0.01% | -12.3% |
| 5 | BAKER BROS. ADVISORS LP | $162.43M | 0.81% | - |
| 6 | Fisher Asset Management, LLC | $78.06M | 0.02% | -14.0% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $69.56M | 0.01% | -18.2% |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $38.22M | 0.05% | -54.8% |
| 9 | MILLENNIUM MANAGEMENT LLC | $26.84M | 0.02% | New |
| 10 | AQR CAPITAL MANAGEMENT LLC | $15.82M | 0.01% | +18.9% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ARWR with a position worth $1.21B, representing 0.02% of their portfolio. In total, 13 institutional investors hold ARWR with a combined value of $3.74B.
In the most recent quarter, 1 fund opened a new position in ARWR. Additionally, 2 increased their holdings and 9 reduced their positions.
Institutional investors hold $3.74B worth of ARWR stock across 13 positions. The largest institutional holder is BlackRock, Inc. with $1.21B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ARWR, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ARWR positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-07-31 |
| 10.1% | 2026-07-27 |
SEC Schedule 13D (activist) and 13G (passive) filings for ARWR. Filed when an investor acquires 5%+ ownership.
Last Close
$82.63
2026-09-09
YTD
+21.9%
89% of 52-week range