§ BIOTECHNOLOGY
USD · BiotechnologyANNX
ANNEXON INC
USDSector · BiotechnologyBeta · 1.38
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
122 increased/new, 77 decreased/exited (13F)
AC 13F Analysis
§ 04 · FUNDAMENTALS · THE BOOKS
| P/B | 3.43 | EPS (TTM) | -1.15 |
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| Redmile Group, LLC | 14.5M | 5.3% | +45% |
| BlackRock, Inc. | 10.9M | 0.0% | +22% |
| Fidelity Management | 10.6M | 0.0% | +4% |
| BVF INC/IL | 8.7M | 1.5% | −5% |
| State Street | 6.9M | 0.0% | +49% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.0M | n/a | n/a |
◇ AC INTELLIGENCE
Top institutional owners for ANNX as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER66.9% · 152 holders
QUALITY / COMPOUNDER15.0% · 17 holders
DEALER / BANK14.4% · 18 holders
PASSIVE / INDEX11.4% · 9 holders
TACTICAL / MACRO4.2% · 3 holders
SYSTEMATIC / QUANT1.4% · 7 holders
INCOME / DEFENSIVE0.7% · 11 holders
ACTIVIST0.5% · 1 holder
GROWTH / MOMENTUM0.1% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for ANNX in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention ANNX yet.