Alector, Inc.

ALEC

Exchange: Nasdaq
Industry: Biological Products, (No Diagnostic Substances)
SEC CIK: 0001653087

SEC filings (opens in a new tab)

In the last 90 days, Alector, Inc. insiders filed 0 open-market purchases and 3 sales; 140 institutions reported holding it in 13F filings for Q2 2026, worth $183.4M in total; no superinvestor holds it.

Q2 2024 vs. Q1 2024

How the institutions holding Alector, Inc. changed between Q1 2024 and Q2 2024.

All holders in Q2 2024 All holders in Q1 2024

13F holders of ALEC: Q1 2024 compared with Q2 2024
Measure	Q1 2024	Of which not filed for Q2 2024	Q2 2024	Change
Holders	157	2	160	+5
Shares	74.2M	112.7K	72.8M	−1.30M (−1.8%)
Value	$446.6M	$646.1K	$330.4M	−$115.6M (−25.9%)

2 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held Alector, Inc. at the end of Q2 2024 but not at the end of Q1 2024.

Institutions new to ALEC in Q2 2024
Institution	Shares	Value	% of portfolio
Soleus Capital Management, L.P.	2,239,006	$10.2M	0.90%
Baker Bros. Advisors LP	927,264	$4.21M	0.05%
ExodusPoint Capital Management, LP	130,058	$590.0K	0.01%
EntryPoint Capital, LLC	100,449	$456.0K	0.21%
Y-Intercept (Hong Kong) Ltd	89,892	$408.1K	0.02%
Corton Capital Inc.	79,878	$362.6K	0.19%
Mirae Asset Global ETFs Holdings Ltd.	68,166	$309.5K	0.00%
SG Americas Securities, LLC	64,183	$291.0K	0.00%
Algert Global LLC	43,512	$197.5K	0.01%
Corebridge Financial, Inc.	43,417	$197.1K	0.00%
Campbell & CO Investment Adviser LLC	39,070	$177.4K	0.02%
Sherbrooke Park Advisers LLC	25,156	$114.2K	0.02%
Tudor Investment Corp Et Al	20,337	$92.3K	0.00%
Inceptionr LLC	13,718	$62.3K	0.02%
Graham Capital Management, L.P.	13,639	$61.9K	0.00%
Creative Planning	12,394	$56.3K	0.00%
Dynamic Technology Lab Private Ltd	10,084	$46.0K	0.01%
Gladius Capital Management LP	6,402	$29.1K	0.03%
State of Wyoming	3,271	$14.8K	0.00%
Group One Trading, L.P.	2,000	$9.08K	0.00%
Picton Mahoney Asset Management	673	$3.00K	0.00%
Motco	125	$568	0.00%
SRS Capital Advisors, Inc.	84	$382	0.00%
The PNC Financial Services Group, Inc.	56	$254	0.00%

Sold out (19)

Institutions that held Alector, Inc. at the end of Q1 2024 and filed for Q2 2024 without it.

Institutions that sold out of ALEC in Q2 2024
Institution	Shares, Q1 2024	Value, Q1 2024
EcoR1 Capital, LLC	4,056,548	$24.4M
Woodline Partners LP	190,000	$1.14M
BIT Capital GmbH	141,372	$851.1K
New York Life Investment Management LLC	59,829	$360.2K
Squarepoint Ops LLC	39,284	$236.5K
American International Group, Inc.	35,655	$214.6K
Citadel Advisors LLC	31,169	$187.6K
Capital Impact Advisors, LLC	24,562	$147.9K
Qube Research & Technologies Ltd	18,789	$113.1K
Jump Financial, LLC	15,925	$95.9K
E Fund Management Co., Ltd.	13,025	$78.4K
Oxford Asset Management LLP	12,002	$72.3K
Mackenzie Financial Corp	10,582	$63.7K
Lazard Asset Management LLC	9,833	$59.0K
Aquatic Capital Management LLC	9,500	$57.2K
Allspring Global Investments Holdings, LLC	6,674	$40.2K
Metropolitan Life Insurance Co	3,430	$20.6K
Quadrant Capital Group LLC	91	$548
Nelson, Van Denburg & Campbell Wealth Management Group, LLC	13	$78

Not filed for Q2 2024 yet (2)

Institutions that held Alector, Inc. at the end of Q1 2024 and haven't filed a 13F for Q2 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALEC in Q1 2024 that haven't filed for Q2 2024
Institution	Shares, Q1 2024	Value, Q1 2024
Credit Suisse AG	90,715	$546.1K
Shell Asset Management Co	21,995	$100.0K