ALEC

Alector Inc
Health CareUSCUSIP 014442107◍ Confluence graph
Tracked 13F Holders
131
-86 QoQ
13F Value (tracked)
$174.7M
Insider Net · 180d
-$236K
0↑ 3↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)20 adding · 13 trimming
Insider net (180d)-$236K

Who owns ALEC?

131 tracked 13F filers

131 tracked 13F filers disclose a position in ALEC as of the latest SEC 13F filings, a combined $174.7M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1TCG Crossover Management, LLC
$21.5M
10.0M
Held
Q1 2026
2BlackRock, Inc.
$16.6M
7.7M
+8.3%
Added · +593K sh
Q1 2026
3Nantahala Capital Management, LLC
$8.7M
4.3M
+53%
Added · +1.5M sh
Q2 2026
4Foresite Capital Management IV, LLC
$8.4M
3.9M
Held
Q1 2026
5VANGUARD CAPITAL MANAGEMENT LLC
$7.9M
3.7M
First observed position
No prior filed position
Q1 2026
6Merck & Co., Inc.
$7.1M
3.5M
Held
Q2 2026
7D. E. Shaw & Co., Inc.
$7.2M
3.3M
+41%
Added · +968K sh
Q1 2026
8683 Capital Management, LLC
$6.4M
3.2M
Held
Q2 2026
9BALYASNY ASSET MANAGEMENT L.P.
$6.3M
2.9M
−10%
Reduced · −330K sh
Q1 2026
10VANGUARD PORTFOLIO MANAGEMENT LLC
$5.6M
2.6M
First observed position
No prior filed position
Q1 2026
11GEODE CAPITAL MANAGEMENT, LLC
$4.9M
2.5M
+7.3%
Added · +168K sh
Q2 2026
12JACOBS LEVY EQUITY MANAGEMENT, INC
$4.6M
2.2M
−0.9%
Reduced · −19K sh
Q1 2026
13Spruce Street Capital LP
$4.2M
2.1M
Held
Q2 2026
14Ikarian Capital, LLC
$4.5M
2.1M
Held
Q1 2026
15Kynam Capital Management, LP
$4.3M
2.0M
Held
Q1 2026
16MILLENNIUM MANAGEMENT LLC
$4.3M
2.0M
+48%
Added · +646K sh
Q1 2026
17STATE STREET CORP
$3.8M
1.9M
+0.8%
Added · +14K sh
Q2 2026
18FMR LLC
$3.9M
1.8M
−19%
Reduced · −435K sh
Q1 2026
19Eversept Partners, LP
$2.9M
1.4M
+5.4%
Added · +73K sh
Q2 2026
20Euclidean Capital LLC
$2.8M
1.3M
Held
Q1 2026
21RENAISSANCE TECHNOLOGIES LLC
$2.8M
1.3M
−17%
Reduced · −256K sh
Q1 2026
22TWO SIGMA INVESTMENTS, LP
$2.8M
1.3M
+23%
Added · +240K sh
Q1 2026
23DEUTSCHE BANK AG\
$2.3M
1.1M
+5.6%
Added · +58K sh
Q1 2026
24DEERFIELD MANAGEMENT COMPANY, L.P.
$2.3M
1.1M
Held
Q1 2026
25ADAR1 Capital Management, LLC
$2.3M
1.1M
−5.2%
Reduced · −58K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is ALEC being bought or sold by institutions?

Last quarter, 1 fund opened a new position in ALEC and 19 added to an existing one, while 13 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
1
funds
Added
19
funds
Reduced
13
funds
Exited
0
funds

Funds that own ALEC also own

CompanyCo-held byCombined value
AMAZON.COM INCAMZN51 funds$75.0B
ELI LILLY & COLLY51 funds$31.0B
UNITEDHEALTH GROUP INCUNH51 funds$13.2B
ALPHABET INC-CL AGOOGL50 funds$56.5B
NVIDIA CORPNVDA49 funds$157.1B
MICROSOFT CORPMSFT49 funds$104.0B
ALPHABET INC-CL CGOOG49 funds$56.5B
VISA INC-CLASS A SHARESV49 funds$26.7B
BERKSHIRE HATHAWAY INC-CL BBRK/B49 funds$16.1B
ADVANCED MICRO DEVICESAMD49 funds$14.4B
BRISTOL-MYERS SQUIBB COBMY49 funds$5.5B
APPLE INCAAPL48 funds$119.0B

Ranked by how many of ALEC's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$236K
3 insiders
Net
-$236K
6 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jun 3, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)3K$7K
Jun 2, 2026Berkley Neil LindsayCFO & Chief Business OfficerSell (S)19K$38K
Jun 2, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)6K$11K
Jun 2, 2026Rosenthal ArnonChief Executive Officer, DirectorSell (S)87K$172K
Apr 16, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)2K$5K
Mar 10, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)1K$3K
Mar 3, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)3K$7K
Mar 2, 2026Rosenthal ArnonChief Executive Officer, DirectorSell (S)82K$174K
Mar 2, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)8K$17K
Mar 2, 2026Berkley Neil LindsayCFO & Chief Business OfficerSell (S)30K$63K
Feb 26, 2026Wong-Sarad GracePrincipal Accounting OfficerSell (S)4K$10K
Dec 5, 2025Wong-Sarad GracePrincipal Accounting OfficerSell (S)5K$6K

Institutional ownership over time

41 funds-83 since Q3 2024
066131Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $27.4M

Recent filings

15 shown

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Connected entities for ALEC

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Ask your agent what changed in ALEC

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/ALEC/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for ALEC.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ALEC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.