# ALECTOR INC COMM

ALECTOR INC COMM is a security (CUSIP 014442107) tracked across SEC portfolio filings. 140 institutional managers reported $178.3M on Form 13F as of 2026-06-30; 15 registered fund positions totaling $6.6M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ALECTOR INC
- Class: COMM
- CUSIP: 014442107
- Asset category: EC
- 13F holders: 140
- 13F value: $178.3M
- 13F period: 2026-06-30
- N-PORT fund positions: 15
- N-PORT value: $6.6M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 140 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| TCG Crossover Management, LLC | PALO ALTO, CA | $21.5M | 10,000,000 |
| BlackRock, Inc. | New York, NY | $16.6M | 7,741,245 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $10.8M | 6,908,054 |
| Foresite Capital Management IV, LLC | Larkspur, CA | $8.4M | 3,887,200 |
| Merck & Co., Inc. | RAHWAY, NJ | $7.6M | 3,545,719 |
| D. E. Shaw & Co., Inc. | New York, NY | $7.2M | 3,332,835 |
| [683 Capital Management, LLC](https://search.stillhousedata.com/firm/156181) | NEW YORK, NY | $6.9M | 3,200,000 |
| [Balyasny Asset Management L.P.](https://search.stillhousedata.com/firm/138111) | Chicago, IL | $6.3M | 2,935,253 |
| Nantahala Capital Management, LLC | New Canaan, CT | $6.1M | 2,815,983 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $4.9M | 2,286,218 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | FLORHAM PARK, NJ | $4.6M | 2,154,361 |
| [Spruce Street Capital LP](https://search.stillhousedata.com/firm/333213) | NEW YORK, NY | $4.5M | 2,101,068 |
| [Ikarian Capital, LLC](https://search.stillhousedata.com/firm/1778253) | DALLAS, TX | $4.5M | 2,082,606 |
| [Kynam Capital Management, LP](https://search.stillhousedata.com/firm/314368) | PRINCETON, NJ | $4.3M | 2,000,000 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $4.3M | 1,979,226 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $2.2M | 0.27% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $1.4M | 0.65% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $1.0M | 0.58% |
| [Small Cap Growth Fund](https://search.stillhousedata.com/fund/S000008021) | VALIC Co II | $936K | 31.34% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $280K | 0.58% |
| [TIFF MULTI-ASSET FUND](https://search.stillhousedata.com/fund/S000006387) | TIFF Investment Program | $182K | 1.31% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $112K | 0.02% |
| [CORNERCAP SMALL-CAP VALUE FUND](https://search.stillhousedata.com/fund/S000004377) | CORNERCAP GROUP OF FUNDS | $111K | 9.25% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $102K | 0.03% |
| [VANGUARD GROWTH AND INCOME FUND](https://search.stillhousedata.com/fund/S000002913) | VANGUARD QUANTITATIVE FUNDS | $95K | 0.06% |
| [Invesco NASDAQ Future Gen 200 ETF](https://search.stillhousedata.com/fund/S000077288) | Invesco Exchange-Traded Fund Trust II | $68K | 36.13% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $28K | 0.08% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $27K | 0.65% |
| [TIAA Separate Account VA-1 - Stock Index Account](https://search.stillhousedata.com/fund/S000005098) | TIAA Separate Account VA-1 | $3K | 0.03% |
| Guggenheim Active Allocation Fund | Guggenheim Active Allocation Fund | $2K | 0.03% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/014442107.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.