XOMA · Insider trading · 13F holders · Congress trades
Xoma Royalty Corporation (XOMA)
Who is buying and selling XOMA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 8
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
XOMA at a glance
- No open-market insider purchases or sales of XOMA were filed in the last 90 days.
- 8 13F filers hold XOMA among their 50 largest positions, worth $395.8M combined. The biggest bets by portfolio weight are Bvf Inc/il (8.3%), TLS Advisors LLC (5.3%) and Newtyn Management, LLC (3.8%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in XOMA.
XOMA insider trading
No open-market insider purchases or sales of XOMA were filed in the last 90 days.
Who owns XOMA? Hedge funds and superinvestors
8 13F filers hold XOMA among their 50 largest positions, worth $395.8M combined. The biggest bets by portfolio weight are Bvf Inc/il (8.3%), TLS Advisors LLC (5.3%) and Newtyn Management, LLC (3.8%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Bvf Inc/ilInvestment manager | 8.3% | $322.7M | 7,593,303 | +193.1% shares | Q2 2026 |
| Newtyn Management, LLCHedge fund | 3.8% | $30.1M | 709,247 | New | Q2 2026 |
| Opaleye Management Inc.Hedge fund | 1.3% | $14.4M | 338,374 | +12.8% shares | Q2 2026 |
| Water Island Capital LLCMutual fund manager | 1.1% | $10.3M | 242,000 | — | Q2 2026 |
| Alpine Associates Management Inc.Hedge fund | 0.6% | $10.2M | 239,318 | — | Q2 2026 |
| Torno Capital, LLCAsset manager | 0.2% | $3.4M | 80,000 | New | Q2 2026 |
| Simcoe Capital LLCInstitutional asset manager | 1.8% | $2.9M | 68,053 | +0.0% shares | Q2 2026 |
| TLS Advisors LLCHedge fund | 5.3% | $1.8M | 42,165 | -63.3% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 8). Screen XOMA in the grand portfolio →
XOMA stock trades by members of Congress
No member of Congress has disclosed a trade in XOMA.
XOMA questions and answers
Are insiders buying XOMA stock?
No open-market insider purchases or sales of XOMA were filed in the last 90 days.
Which hedge funds own XOMA?
8 13F filers hold XOMA among their 50 largest positions, worth $395.8M combined. The biggest bets by portfolio weight are Bvf Inc/il (8.3%), TLS Advisors LLC (5.3%) and Newtyn Management, LLC (3.8%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
Has Congress traded XOMA?
No member of Congress has disclosed a trade in XOMA.
Who is the largest holder of XOMA?
Among 13F filers, Bvf Inc/il reports the largest XOMA position, $322.7M (7,593,303 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Bvf Inc/il's: 8.3% of its portfolio.
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