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Of the 13 tracked institutions holding HALO, 7 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +4.6pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, HALO (HALOZYME THERAPEUTICS INC) is held with a combined value of $2.24B across 34,174,722 shares. The largest holder is BlackRock, Inc. with a position worth $857.32M (0.02% of their portfolio). CITADEL ADVISORS LLC opened a new position in the most recent quarter. 5 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$2.24B
Total Shares Held
34,174,722
Institutional Holders
13
% of Shares Outstanding
28.8%
of 118.61M shares · SEC 2026-04-30
Days to Cover
7.3+0.5%
13.30M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 28.8% of HALO'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 2026-04-30), 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. | $857.32M | 0.02% | +0.8% |
| 2 | VANGUARD GROUP INC | $778.45M | 0.01% | -0.5% |
| 3 | STATE STREET CORP | $319.13M | 0.01% | -3.6% |
| 4 | AQR CAPITAL MANAGEMENT LLC | $64.82M | 0.03% | -12.3% |
| 5 | Gotham Asset Management, LLC | $48.27M | 0.15% | +69.8% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $47.30M | 0.07% | +30.1% |
| 7 | Bridgewater Associates, LP | $33.05M | 0.15% | -8.9% |
| 8 | MILLENNIUM MANAGEMENT LLC | $30.46M | 0.01% | -68.9% |
| 9 | Fisher Asset Management, LLC | $28.74M | 0.01% | -5.0% |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $16.77M | 0.00% | +7.2% |
| Member | Type | Date |
|---|---|---|
| Gilbert Cisneros | Buy | Mar 9, 2026 |
| Gilbert Cisneros | Sell | Mar 24, 2025 |
| Josh Gottheimer | Sell | Sep 9, 2024 |
| Mark R Warner | Sell |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of HALO with a position worth $857.32M, representing 0.02% of their portfolio. In total, 13 institutional investors hold HALO with a combined value of $2.24B.
In the most recent quarter, 1 fund opened a new position in HALO. Additionally, 5 increased their holdings and 7 reduced their positions.
Institutional investors hold $2.24B worth of HALO stock across 13 positions. The largest institutional holder is BlackRock, Inc. with $857.32M 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 HALO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their HALO 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 →
| Nov 6, 2017 |
Last Close
$81.93
2026-07-24
YTD
+16.5%
100% of 52-week range
