A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Alector, Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 479,700 shares of ALEC stock, worth $2.66 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares
479,700
Previous 539,500 11.08%
Holding current value
$2.66 Million
Previous $3.25 Million 32.95%
% of portfolio
0.0%
Previous 0.01%

Shares

17 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q2 2024

Aug 14, 2024

SELL
$4.19 - $6.23 $250,562 - $372,554
-59,800 Reduced 11.08%
479,700 $2.18 Million
Q1 2024

May 15, 2024

BUY
$5.69 - $8.08 $833,016 - $1.18 Million
146,400 Added 37.24%
539,500 $3.25 Million
Q4 2023

Feb 14, 2024

BUY
$3.77 - $8.39 $15,457 - $34,399
4,100 Added 1.05%
393,100 $3.14 Million
Q3 2023

Nov 14, 2023

SELL
$5.2 - $8.77 $290,680 - $490,243
-55,900 Reduced 12.56%
389,000 $2.52 Million
Q2 2023

Aug 14, 2023

SELL
$5.86 - $7.93 $163,494 - $221,247
-27,900 Reduced 5.9%
444,900 $2.67 Million
Q1 2023

May 15, 2023

BUY
$5.85 - $9.84 $448,695 - $754,728
76,700 Added 19.36%
472,800 $2.93 Million
Q4 2022

Feb 14, 2023

BUY
$6.88 - $9.55 $37,152 - $51,570
5,400 Added 1.38%
396,100 $3.66 Million
Q3 2022

Nov 14, 2022

SELL
$8.19 - $13.2 $168,714 - $271,920
-20,600 Reduced 5.01%
390,700 $3.7 Million
Q2 2022

Aug 15, 2022

BUY
$7.65 - $14.24 $1.08 Million - $2.01 Million
141,000 Added 52.16%
411,300 $4.18 Million
Q1 2022

May 16, 2022

SELL
$13.02 - $20.78 $170,562 - $272,218
-13,100 Reduced 4.62%
270,300 $3.85 Million
Q4 2021

Feb 14, 2022

BUY
$19.35 - $25.54 $2.58 Million - $3.4 Million
133,200 Added 88.68%
283,400 $5.85 Million
Q3 2021

Nov 15, 2021

BUY
$21.65 - $39.49 $794,555 - $1.45 Million
36,700 Added 32.33%
150,200 $3.43 Million
Q2 2021

Aug 16, 2021

SELL
$15.5 - $22.48 $3.21 Million - $4.66 Million
-207,300 Reduced 64.62%
113,500 $2.36 Million
Q1 2021

May 17, 2021

SELL
$14.84 - $22.23 $5.23 Million - $7.83 Million
-352,200 Reduced 52.33%
320,800 $6.46 Million
Q4 2020

Feb 16, 2021

BUY
$9.4 - $16.7 $1.64 Million - $2.91 Million
174,500 Added 35.01%
673,000 $10.2 Million
Q3 2020

Nov 16, 2020

BUY
$10.54 - $24.96 $4.94 Million - $11.7 Million
468,500 Added 1561.67%
498,500 $5.25 Million
Q2 2020

Aug 14, 2020

BUY
$21.87 - $33.11 $656,100 - $993,300
30,000 New
30,000 $733,000

Others Institutions Holding ALEC

About Alector, Inc.


  • Ticker ALEC
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 82,563,904
  • Market Cap $458M
  • 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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