Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in XOMA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BVF INC/IL | 2.6M | $81.3M | 0.0% | 20.655% | 2.59% |
| 2 | MORGAN STANLEY | 1.7M | $53.4M | -0.7% | 13.573% | 0.00% |
| 3 | FMR LLC | 1.3M | $40.9M | +12.1% | 10.390% | 0.00% |
| 4 | BlackRock, Inc. | 647K | $20.3M | +5.8% | 5.158% | 0.00% |
| 5 | Woodline Partners LP | 640K | $20.1M | +143.4% | 5.103% | 0.08% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 550K | $17.2M | β | 4.384% | 0.00% |
| 7 | Opaleye Management Inc. | 300K | $9.4M | +2.5% | 2.392% | 1.24% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 230K | $7.2M | +3.7% | 1.832% | 0.00% |
| 9 | MILLENNIUM MANAGEMENT LLC | 205K | $6.4M | β | 1.634% | 0.00% |
| 10 | STATE STREET CORP | 193K | $6.1M | +10.4% | 1.540% | 0.00% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 133K | $4.2M | +207.7% | 1.063% | 0.00% |
| 12 | CITADEL ADVISORS LLC | 110K | $3.5M | β | 0.879% | 0.00% |
| 13 | NORTHERN TRUST CORP | 93K | $2.9M | +3.4% | 0.745% | 0.00% |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 86K | $2.7M | β | 0.684% | 0.00% |
| 15 | Bank of New York Mellon Corp | 75K | $2.4M | +9.7% | 0.598% | 0.00% |
| 16 | UBS Group AG | 73K | $2.3M | +178.5% | 0.578% | 0.00% |
| 17 | Stonepine Capital Management, LLC | 70K | $2.2M | -39.6% | 0.554% | 1.74% |
| 18 | Simcoe Capital LLC | 68K | $2.1M | β | 0.543% | 1.96% |
| 19 | VANGUARD FIDUCIARY TRUST CO | 67K | $2.1M | β | 0.532% | 0.00% |
| 20 | PANAGORA ASSET MANAGEMENT INC | 59K | $1.8M | +176.3% | 0.468% | 0.01% |
| 21 | HighVista Strategies LLC | 47K | $1.5M | -58.5% | 0.373% | 0.41% |
| 22 | CM Management, LLC | 40K | $1.3M | 0.0% | 0.319% | 1.05% |
| 23 | RBF Capital, LLC | 30K | $941K | 0.0% | 0.239% | 0.05% |
| 24 | STATE OF WISCONSIN INVESTMENT BOARD | 29K | $906K | β | 0.230% | 0.00% |
| 25 | Quadrature Capital Ltd | 28K | $894K | β | 0.227% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in XOMA β a direct measure of their conviction.
Filings activity in XOMA during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 82 | +12% | 57.67% | +14.12 pp | $302M | +32% |
| Q4 2025 | 73 | +1.4% | 43.55% | 16.85 pp | $228M | 28% |
| Q3 2025 | 72 | +7.5% | 60.40% | +21.87 pp | $317M | +57% |
| Q2 2025 | 67 | +3.1% | 38.53% | +9.21 pp | $202M | +31% |
| Q1 2025 | 65 | +0.0% | 29.32% | 9.03 pp | $154M | 24% |
| Q4 2024 | 65 | 1.5% | 38.35% | +0.43 pp | $201M | +1.1% |
| Q3 2024 | 66 | +10% | 37.92% | +4.11 pp | $199M | +12% |
| Q2 2024 | 60 | β | 33.81% | β | $177M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying XOMA stock.
Based on Q1 2026 13F filings, institutional ownership of XOMA Royalty Corp. stands at 57.7%, held across 82 reporting institutions.
BVF INC/IL is the largest reported institutional holder of XOMA, with approximately 2,590,303 shares worth $0.08B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of XOMA, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC.
Our composite Smart Money Score for XOMA is 69 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
20 institutions opened new positions in XOMA during Q1 2026, while 11 fully exited. 54 added to existing positions and 8 trimmed.
XOMA institutional ownership rose by 14.12 percentage points quarter-over-quarter, with a net change of +9 holders.
The top 10 institutions account for 86.8% of all reported 13F value in XOMA, and the top 25 account for 97.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
XOMA Royalty Corp. (XOMA) Institutional Ownership