Tower Research Capital LLC (Trc) Alector, Inc. Transaction History

Tower Research Capital LLC (Trc)

$3.39 Billion
Q3 2025

A detailed history of Tower Research Capital LLC (Trc) transactions in Alector, Inc. stock. As of the latest transaction made, Tower Research Capital LLC (Trc) holds 2,514 shares of ALEC stock, worth $3,117. This represents 0.0% of its overall portfolio holdings.

Number of Shares

2,514

Previous 13,399 81.24%

Holding current value

$3,117

Previous $18,000 61.11%

% of portfolio

0.0%

Previous 0.0%

27 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$1.42 - $3.18 $15,456 - $34,614	-10,885 Reduced 81.24%	2,514 $7,000
Q2 2025 Aug 14, 2025	SELL	$0.9 - $1.63 $8,343 - $15,111	-9,271 Reduced 40.9%	13,399 $18,000
Q1 2025 May 15, 2025	BUY	$1.23 - $2.06 $9,840 - $16,480	8,000 Added 54.53%	22,670 $27,000
Q4 2024 Feb 13, 2025	BUY	$1.72 - $6.06 $10,485 - $36,941	6,096 Added 71.1%	14,670 $27,000
Q3 2024 Nov 14, 2024	SELL	$4.34 - $6.58 $42,692 - $64,727	-9,837 Reduced 53.43%	8,574 $40,000

Q2 2024 Aug 13, 2024	BUY	$4.19 - $6.23 $73,463 - $109,230	17,533 Added 1996.92%	18,411 $83,000
Q1 2024 May 15, 2024	SELL	$5.69 - $8.08 $81,941 - $116,360	-14,401 Reduced 94.25%	878 $5,000
Q4 2023 Feb 13, 2024	BUY	$3.77 - $8.39 $53,337 - $118,701	14,148 Added 1250.93%	15,279 $121,000
Q3 2023 Nov 14, 2023	SELL	$5.2 - $8.77 $15,797 - $26,643	-3,038 Reduced 72.87%	1,131 $7,000
Q2 2023 Aug 14, 2023	SELL	$5.86 - $7.93 $2,355 - $3,187	-402 Reduced 8.79%	4,169 $25,000
Q1 2023 May 09, 2023	BUY	$5.85 - $9.84 $20,790 - $34,971	3,554 Added 349.46%	4,571 $28,000
Q4 2022 Feb 10, 2023	SELL	$6.88 - $9.55 $157,386 - $218,465	-22,876 Reduced 95.74%	1,017 $9,000
Q3 2022 Nov 10, 2022	BUY	$8.19 - $13.2 $110,016 - $177,315	13,433 Added 128.42%	23,893 $226,000
Q2 2022 Aug 15, 2022	SELL	$7.65 - $14.24 $48,860 - $90,950	-6,387 Reduced 37.91%	10,460 $106,000
Q1 2022 May 12, 2022	BUY	$13.02 - $20.78 $116,164 - $185,399	8,922 Added 112.58%	16,847 $240,000
Q4 2021 Feb 14, 2022	SELL	$19.35 - $25.54 $52,941 - $69,877	-2,736 Reduced 25.66%	7,925 $164,000
Q3 2021 Nov 15, 2021	BUY	$21.65 - $39.49 $48,993 - $89,365	2,263 Added 26.95%	10,661 $243,000
Q2 2021 Aug 16, 2021	BUY	$15.5 - $22.48 $97,014 - $140,702	6,259 Added 292.61%	8,398 $175,000
Q1 2021 May 17, 2021	SELL	$14.84 - $22.23 $123,364 - $184,797	-8,313 Reduced 79.54%	2,139 $43,000
Q4 2020 Feb 16, 2021	BUY	$9.4 - $16.7 $49,979 - $88,793	5,317 Added 103.54%	10,452 $158,000
Q3 2020 Nov 16, 2020	SELL	$10.54 - $24.96 $30,998 - $73,407	-2,941 Reduced 36.42%	5,135 $54,000
Q2 2020 Aug 13, 2020	BUY	$21.87 - $33.11 $176,622 - $267,396	8,076 New	8,076 $197,000
Q1 2020 May 15, 2020	SELL	$16.25 - $35.28 $4,875 - $10,584	-300 Closed	0 $0
Q4 2019 Feb 07, 2020	BUY	$14.17 - $20.3 $4,251 - $6,090	300 New	300 $5,000
Q3 2019 Nov 05, 2019	SELL	$14.42 - $22.2 $1,442 - $2,220	-100 Closed	0 $0
Q2 2019 Aug 13, 2019	SELL	$16.26 - $26.42 $43,593 - $70,832	-2,681 Reduced 96.4%	100 $2,000
Q1 2019 May 14, 2019	BUY	$15.97 - $22.5 $44,412 - $62,572	2,781 New	2,781 $52,000

Others Institutions Holding ALEC

# of Institutions

158

Shares Held

58M

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...

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Tower Research Capital LLC (Trc) Alector, Inc. Transaction History