Arrowhead Pharmaceuticals In
$55.90-4.4%
+$994.7M
Net Activity
+8.73% total shares
Institutions Holding
508
Popularity Rank
#1164
Avg Weight
0.18%
Total Value
$10.1B
Market Cap
$7.5B
508 institutions currently hold ARWR, with 289 net buyers and 219 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
219
Net Buying Institutions
289
Top 5 by Value
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Across its top 20 institutional holders, ARWR's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 10/100, avg. turnover score 45/100).
ARWR ranks #1164 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
ARWR is a top-conviction position for Western Financial Corp/CA — at 19.6% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in ARWR belongs to BlackRock, Inc., but the position matters far more to Western Financial Corp/CA, who has 19.6% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
ARWR is down 4.4% today, but institutions show net buying of $994.7M this quarter — a divergence between today's price move and the underlying institutional flow.
ARWR reported a net loss of $320.0M over the trailing twelve months.
+$1.9B
Total Buy Value
$1.5B
Total Sell Value
289
Net Buyers
219
Net Sellers
ARWR
Q2 2026
Top 5 Institutional Movers
ARWR does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
2
Filings (90d)
$1.19M
Total Est. Value
14K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Adeoye Olukotun | 2026-08-18 | $174K |
| Michael Perry | 2026-08-18 | $1.01M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
2
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Avoro Capital Advisors LLC | 13G/A | 2026-08-14 | 9.6% |
| Vanguard Portfolio Management | 13G/A | 2026-07-31 | 4.5% |
| BlackRock, Inc. | 13G/A | 2026-07-27 | 10.1% |
1
Filings (14d)
On August 4, 2026, Arrowhead Pharmaceuticals (ARWR) announced its fiscal 2026 financial results for the period ended June 30, 2026, with the press release attached as Exhibit 99.1. This 8-K is largely a routine filing; the excerpt doesn't include actual revenue or earnings figures, so the document alone doesn't tell you how the period went.
View Full Filing (SEC EDGAR)04280A100
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Access ARWR's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/ARWRCLI
npx alphasmo stocks get ARWR