Jim Simons Alector, Inc. Transaction History

Renaissance Technologies LLC

$70.6 Billion
Q3 2025

A detailed history of Jim Simons (Renaissance Technologies LLC) transactions in Alector, Inc. stock. As of the latest transaction made, Renaissance Technologies LLC holds 949,150 shares of ALEC stock, worth $1.18 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

949,150

Previous 1,254,850 24.36%

Holding current value

$1.18 Million

Previous $1.76 Million 59.97%

% of portfolio

0.0%

Previous 0.0%

18 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 13, 2025	SELL	$1.42 - $3.18 $434,094 - $972,126	-305,700 Reduced 24.36%	949,150 $2.81 Million
Q2 2025 Aug 13, 2025	BUY	$0.9 - $1.63 $198,895 - $360,221	220,995 Added 21.38%	1,254,850 $1.76 Million
Q1 2025 May 14, 2025	BUY	$1.23 - $2.06 $145,283 - $243,321	118,117 Added 12.9%	1,033,855 $1.27 Million
Q4 2024 Feb 13, 2025	BUY	$1.72 - $6.06 $608,859 - $2.15 Million	353,988 Added 63.02%	915,738 $1.73 Million
Q3 2024 Nov 13, 2024	SELL	$4.34 - $6.58 $404,922 - $613,914	-93,300 Reduced 14.24%	561,750 $2.62 Million
Q2 2024 Aug 09, 2024	SELL	$4.19 - $6.23 $85,614 - $127,297	-20,433 Reduced 3.02%	655,050 $2.97 Million
Q1 2024 May 13, 2024	BUY	$5.69 - $8.08 $588,915 - $836,280	103,500 Added 18.09%	675,483 $4.07 Million
Q4 2023 Feb 13, 2024	BUY	$3.77 - $8.39 $263,070 - $585,454	69,780 Added 13.89%	571,983 $4.56 Million
Q3 2023 Nov 14, 2023	SELL	$5.2 - $8.77 $961,376 - $1.62 Million	-184,880 Reduced 26.91%	502,203 $3.25 Million
Q2 2023 Aug 11, 2023	BUY	$5.86 - $7.93 $217,534 - $294,377	37,122 Added 5.71%	687,083 $4.13 Million
Q1 2023 May 12, 2023	BUY	$5.85 - $9.84 $340,171 - $572,186	58,149 Added 9.83%	649,961 $4.02 Million
Q4 2022 Feb 13, 2023	SELL	$6.88 - $9.55 $885,944 - $1.23 Million	-128,771 Reduced 17.87%	591,812 $5.46 Million
Q3 2022 Nov 14, 2022	SELL	$8.19 - $13.2 $2.01 Million - $3.25 Million	-246,000 Reduced 25.45%	720,583 $6.82 Million
Q2 2022 Aug 12, 2022	BUY	$7.65 - $14.24 $2 Million - $3.71 Million	260,803 Added 36.95%	966,583 $9.82 Million
Q1 2022 May 13, 2022	BUY	$13.02 - $20.78 $5.63 Million - $8.98 Million	432,300 Added 158.07%	705,780 $10.1 Million
Q4 2021 Feb 11, 2022	BUY	$19.35 - $25.54 $5.29 Million - $6.98 Million	273,480 New	273,480 $5.65 Million
Q3 2020 Nov 13, 2020	SELL	$10.54 - $24.96 $735,481 - $1.74 Million	-69,780 Closed	0 $0
Q2 2020 Aug 13, 2020	BUY	$21.87 - $33.11 $1.53 Million - $2.31 Million	69,780 New	69,780 $1.71 Million

Others Institutions Holding ALEC

# of Institutions

159

Shares Held

58.1M

Call Options Held

614K

Put Options Held

223K

View Full List

About Alector, Inc.

Ticker ALEC
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 82,563,904
Market Cap $102M
Description
Alector, Inc., a clinical stage biopharmaceutical company, develops therapies for the treatment of neurodegeneration diseases. Its products include AL001, a humanized recombinant monoclonal antibody, which is in Phase III clinical trial for the treatment of frontotemporal dementia, Alzheimer's, Parkinson's, and amyotrophic lateral sclerosis dise...

More about ALEC

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