ANNX · Insider trading · 13F holders · Congress trades
Annexon, Inc. (ANNX)
Who is buying and selling ANNX: 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
- 15
- Insider buys, 90 days
- $100K
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
ANNX at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 ANNX insider filed 1 open-market purchase worth $100K on SEC Form 4.
- 15 13F filers hold ANNX among their 50 largest positions, worth $315.2M combined. The biggest bets by portfolio weight are Great Point Partners LLC (4.7%), Mak Capital One LLC (4.7%) and Redmile Group, LLC (4.5%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
- No member of Congress has disclosed a trade in ANNX.
- ANNX last closed at $4.01 on Oct 29, 2026.
ANNX insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 ANNX insider filed 1 open-market purchase worth $100K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Love Douglas | PRESIDENT AND CEO, Director | Buy | 26,065 | $3.83 | $100K | SEC |
Who owns ANNX? Hedge funds and superinvestors
15 13F filers hold ANNX among their 50 largest positions, worth $315.2M combined. The biggest bets by portfolio weight are Great Point Partners LLC (4.7%), Mak Capital One LLC (4.7%) and Redmile Group, LLC (4.5%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Redmile Group, LLCHedge fund | 4.5% | $67.8M | 11,869,877 | -18.4% shares | Q2 2026 |
| Bvf Inc/ilInvestment manager | 1.3% | $49.7M | 8,698,173 | +0.0% shares | Q2 2026 |
| Mak Capital One LLCHedge fund | 4.7% | $33.5M | 5,862,180 | +24.1% shares | Q2 2026 |
| Siren, L.L.C.Investment manager | 0.5% | $25.5M | 4,458,646 | +12.6% shares | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 1.5% | $25.3M | 4,437,731 | -14.9% shares | Q2 2026 |
| Bellevue Group AGInvestment manager | 0.5% | $23.4M | 4,100,016 | -20.5% shares | Q2 2026 |
| Mpm Bioimpact LLCHedge fund | 1.2% | $20.2M | 3,544,354 | New | Q2 2026 |
| Great Point Partners LLCHedge fund | 4.7% | $20.0M | 3,500,000 | +40.0% shares | Q2 2026 |
| Palo Alto Investors LPHedge fund | 2.3% | $16.8M | 2,948,090 | +0.0% shares | Q2 2026 |
| Opaleye Management Inc.Hedge fund | 0.9% | $9.8M | 1,714,451 | -26.5% shares | Q2 2026 |
| Logos Global Management LPHedge fund | 0.4% | $8.6M | 1,500,000 | — | Q2 2026 |
| Tetragon Partners GP LtdHedge fund | 1.2% | $7.1M | 1,242,455 | -3.9% shares | Q2 2026 |
| Ishara Investments LPHedge fund | 3.4% | $4.7M | 820,000 | +370.6% shares | Q2 2026 |
| Board of Trustees of The Leland Stanford Junior UniversityEndowment & foundation | 0.5% | $2.8M | 482,550 | +0.0% shares | Q2 2026 |
| Forefront Analytics, LLCInstitutional asset manager | 0.1% | $81K | 14,240 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 15). Screen ANNX in the grand portfolio →
ANNX stock trades by members of Congress
No member of Congress has disclosed a trade in ANNX.
Analysis mentioning ANNX
Posts from the blog that cover Annexon, Inc., newest first.
ANNX questions and answers
Are insiders buying ANNX stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 ANNX insider filed 1 open-market purchase worth $100K on SEC Form 4.
Which hedge funds own ANNX?
15 13F filers hold ANNX among their 50 largest positions, worth $315.2M combined. The biggest bets by portfolio weight are Great Point Partners LLC (4.7%), Mak Capital One LLC (4.7%) and Redmile Group, LLC (4.5%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
Has Congress traded ANNX?
No member of Congress has disclosed a trade in ANNX.
Who is the largest holder of ANNX?
Among 13F filers, Redmile Group, LLC reports the largest ANNX position, $67.8M (11,869,877 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Great Point Partners LLC's: 4.7% of its portfolio.
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