Three healthcare-focused funds have now disclosed 5%+ passive stakes in Alector within 38 days, collectively owning over 21% of the company. While all are passive, the concentrated ownership base increases the likelihood of coordinated engagement on strategic direction, particularly around the Genentech partnership and pipeline prioritization. Monitor for any 13D conversion or additional insider buying.
Price Chart
Executive Summary
RA Capital Management, L.P. and affiliated entities filed a Schedule 13G disclosing a new 5.1% passive stake in Alector, Inc., holding 7,500,000 shares as of October 19, 2026. This adds to a growing list of healthcare-focused funds (Deep Track Capital at 8.61%, BVF at 7.7%) that have taken stakes following Alector's October 2025 Genentech licensing deal, which extended cash runway into 2029.
Key Financial Metrics
Key Facts
- RA Capital Healthcare Fund directly holds 7,500,000 shares of Alector common stock.
- The stake represents 5.1% of shares outstanding, based on 111,656,919 shares outstanding as of July 31, 2026 plus 36,600,000 shares issued in an October 19, 2026 public offering.
- The filing is passive under Rule 13d-1(c), with no intent to influence control.
- RA Capital Management serves as investment adviser to the Fund and disclaims beneficial ownership.
- This is a new position for RA Capital; no prior 13G or 13D from this filer appears in the cross-filing context.
- The filing comes three days after Deep Track Capital disclosed an 8.61% stake and 38 days after BVF disclosed a 7.7% stake.
Financial Impact
RA Capital holds 7,500,000 shares, valued at approximately $13.7M based on a $271M market cap and ~148.3M shares outstanding post-offering.
Risk Factors
- Passive filings do not preclude future activist activity; a 13D conversion would signal a shift in intent.
- The October 2026 public offering added 36.6M shares, diluting prior holders and potentially pressuring the stock.
- Alector has no approved products and relies on partnership milestones and pipeline execution for value creation.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G Filing (Primary) | 0001346824-26-000247 |
| Document: 0001346824-26-000247-index-headers.html | 0001346824-26-000247 |
| Document: 0001346824-26-000247-index.html | 0001346824-26-000247 |
| Document: 0001346824-26-000247.txt | 0001346824-26-000247 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 1d ago | SC 13G | $1.82 | awaiting T+60 | — | $2.10 (+15.38%) |
Oct 23, 2026 4d ago | SC 13G | $1.83 | awaiting T+60 | — | $2.10 (+14.75%) |
Oct 16, 2026 11d ago | 424B5 | $1.95 | awaiting T+60 | — | $2.10 (−7.69%) |
Oct 16, 2026 11d ago | 8-K | $1.95 | awaiting T+60 | — | $2.10 (−7.69%) |
Oct 14, 2026 13d ago | 8-K | $1.88 | awaiting T+60 | — | $2.10 (+11.70%) |
Oct 5, 2026 22d ago | 8-K | $1.99 | awaiting T+60 | — | $2.10 (+5.53%) |
Oct 5, 2026 22d ago | Press Release | $1.99 | awaiting T+60 | — | $2.10 (+5.53%) |
Sep 18, 2026 5w ago | SC 13G | $1.93 | awaiting T+60 | — | $2.10 (+8.81%) |
Sep 4, 2026 7w ago | Insider Cluster | $2.47 | awaiting T+60 | — | $2.10 (−14.98%) |
Aug 15, 2026 10w ago | Institutional Cluster | $2.05 | awaiting T+60 | — | $2.10 (+2.44%) |
US Market Status
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