§ BIOTECHNOLOGY
USD · BiotechnologyALEC
ALECTOR INC
USDSector · Biotechnology
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
75 increased/new, 40 decreased/exited (13F)
AC 13F Analysis
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| TCG Crossover Management, LLC | 10.0M | 0.6% | ±0% |
| BlackRock, Inc. | 7.7M | 0.0% | +8% |
| Foresite Capital Management IV, LLC | 3.9M | 3.5% | ±0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.7M | n/a | n/a |
| Merck & Co., Inc. | 3.5M | 2.2% | ±0% |
| DE Shaw | 3.3M | 0.0% | +41% |
◇ AC INTELLIGENCE
Top institutional owners for ALEC 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
OTHER16.2% · 0 holders
OTHER55.3% · 85 holders
PASSIVE / INDEX10.2% · 9 holders
DEALER / BANK5.1% · 18 holders
TACTICAL / MACRO4.6% · 3 holders
QUALITY / COMPOUNDER3.4% · 11 holders
ACTIVIST3.0% · 1 holder
SYSTEMATIC / QUANT1.8% · 4 holders
INCOME / DEFENSIVE0.3% · 7 holders
◇ 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 ALEC in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention ALEC yet.