Security key
014442107
Alector, Inc. - Common Stock, $0.0001 par value per share (ALEC)
CUSIP: 014442107
Q2 2025 13F Holders as of 30 Jun 2025
- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Total 13F shares
- 70,504,594
- Total 13F value
- $98,716,242
- Share change
- -1,854,870
- Put/Call ratio
- 45%
- SEC-reported price per share
- $1.40
- Number of holders
- 134
- Value change
- -$652,478
- Number of buys
- 63
- Number of sells
- 57
- Shares outstanding
- 110,074,447
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2025
Institutions
134
Top holders
10
ALEC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Previous quarter: Q1 2025
Alector, Inc. SEC filings
Alector, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 014442107
Recent filing periods:
Ownership snapshot
Top reported holders of ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Marc Grasso
Disclosed value leader
FMR LLC
Comparable rows
15/15
Latest evidence
02 Jun 2025
3/4/5
13F
Lead comparable stake: 0.27%
Showing 1-6 of 15 holder rows.
Quick read
Marc Grasso leads the comparable SEC ownership view at 0.27%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Marc Grasso's linked filing trail.
Comparable ownership
Top 5
Marc Grasso
0.27%
FMR LLC
13%
RA CAPITAL MANAGEMENT, L.P.
8.8%
BlackRock, Inc.
7.5%
VANGUARD GROUP INC
5.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Marc Grasso |
3/4/5
Chief Financial Officer
|
0.27%
|
$396,262
296,072 shares
|
— | 02 Jun 2025 |
| FMR LLC |
13F
Company
|
13%
|
$17,699,994
14,390,239 shares
|
— | 31 Mar 2025 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
8.8%
|
$11,925,130
9,695,228 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
7.5%
|
$10,184,035
8,279,702 shares
|
— | 31 Mar 2025 |
| VANGUARD GROUP INC |
13F
Company
|
5.5%
|
$7,445,240
6,053,041 shares
|
— | 31 Mar 2025 |
| Merck & Co., Inc. |
13F
Company
|
3.2%
|
$4,361,234
3,545,719 shares
|
— | 31 Mar 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
134
Shares
70,504,594
Rows available
134
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
139
Q2 2025 holders
134
Holder diff
-5
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend