Who owns ALX ONCOLOGY HOLDINGS INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ALXO from SEC Form 13F filings across 93 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 93 institutions disclosed 105.2M shares of ALX ONCOLOGY HOLDINGS INC worth $217.9M — about 77.5% of shares outstanding; the largest disclosed holder is RA CAPITAL MANAGEMENT, L.P.. Source: SEC Form 13F filings, parsed by EvidInvest.
93
13F holders
$217.9M
value, 2026 filers
77.5%
of shares outstanding (105.2M sh)
36
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ALXO's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 13.0M | $26.9M | 0.2% | 9.6% | 0.0% |
| 2 | venBio Partners LLC | 12.9M | $26.7M | 5.1% | 9.5% | 0.0% |
| 3 | BlackRock, Inc. | 7.4M | $15.3M | 0.0% | 5.5% | +1552.4% |
| 4 | Redmile Group, LLC | 7.4M | $15.3M | 1.0% | 5.5% | -7.2% |
| 5 | Blackstone Inc. | 6.6M | $13.6M | 0.0% | 4.9% | +13.2% |
| 6 | Driehaus Capital Management LLC | 6.0M | $12.5M | 0.1% | 4.4% | +5.1% |
| 7 | SILVERARC CAPITAL MANAGEMENT, LLCNEW | 5.7M | $11.9M | 1.2% | 4.2% | new |
| 8 | TCG Crossover Management, LLC | 5.7M | $11.7M | 0.3% | 4.2% | -56.5% |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 5.0M | $10.3M | 0.0% | 3.7% | +19.0% |
| 10 | Vivo Capital, LLC | 3.2M | $6.6M | 0.6% | 2.3% | 0.0% |
| 11 | MARSHALL WACE, LLP | 3.1M | $6.4M | 0.0% | 2.3% | -18.3% |
| 12 | 5AM Venture Management, LLC | 3.1M | $6.3M | 2.2% | 2.3% | 0.0% |
| 13 | Almitas Capital LLC | 2.9M | $6.1M | 1.5% | 2.2% | -7.4% |
| 14 | ORBIMED ADVISORS LLC | 2.9M | $5.9M | 0.1% | 2.1% | 0.0% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 2.8M | $5.8M | 0.0% | 2.1% | +465.0% |
| 16 | TWO SIGMA INVESTMENTS, LP | 2.2M | $4.5M | 0.0% | 1.6% | +37.2% |
| 17 | MILLENNIUM MANAGEMENT LLC | 1.5M | $3.2M | 0.0% | 1.1% | -22.4% |
| 18 | STATE STREET CORP | 1.5M | $3.1M | 0.0% | 1.1% | +752.5% |
| 19 | ACADIAN ASSET MANAGEMENT LLC | 1.3M | $2.7M | 0.0% | 1% | +19.3% |
| 20 | JPMORGAN CHASE & CO | 1.0M | $2.3M | 0.0% | 0.8% | +1055180.8% |
| 21 | NORTHERN TRUST CORP | 935,669 | $1.9M | 0.0% | 0.7% | +583.1% |
| 22 | Ensign Peak Advisors, Inc | 810,297 | $1.7M | 0.0% | 0.6% | -14.8% |
| 23 | Nantahala Capital Management, LLCNEW | 750,000 | $1.6M | 0.1% | 0.6% | new |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 749,229 | $1.6M | 0.0% | 0.6% | +665.4% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 743,491 | $1.5M | 0.0% | 0.5% | +152.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.