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Alector Inc
ALECAdd to Watchlist
2.540USD
+0.090+3.67%
Close 11-13 16:00（ET）
376.58MMarket Cap
LossP/E TTM
After-hours 18:17 (ET)2.500USD-0.035-1.38%
After-hours 18:17 (ET)Ownership
Shareholding Stats
Updated: Sun, May 10
Updated: Sun, May 10
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
TCG Crossover Management, LLC
9.01%
Polaris Venture Partners
6.17%
Rosenthal (Arnon)
5.15%
BlackRock Institutional Trust Company, N.A.
4.99%
Acadian Asset Management LLC
3.64%
Other
71.04%
Shareholders
Shareholders
Proportion
TCG Crossover Management, LLC
9.01%
Polaris Venture Partners
6.17%
Rosenthal (Arnon)
5.15%
BlackRock Institutional Trust Company, N.A.
4.99%
Acadian Asset Management LLC
3.64%
Other
71.04%
Shareholder Types
Shareholders
Proportion
Investment Advisor
30.44%
Hedge Fund
20.08%
Investment Advisor/Hedge Fund
17.24%
Venture Capital
7.01%
Individual Investor
6.37%
Private Equity
3.57%
Corporation
3.19%
Research Firm
1.85%
Pension Fund
0.54%
Other
9.69%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
353
89.88M
80.95%
-32.95M
2025Q4
349
90.03M
98.61%
+10.00M
2025Q3
362
80.15M
106.47%
+1.69M
2025Q2
360
78.42M
102.48%
-2.24M
2025Q1
365
81.31M
103.38%
-22.06M
2024Q4
366
82.35M
103.74%
-11.52M
2024Q3
362
84.26M
96.78%
-1.24M
2024Q2
361
85.77M
94.54%
-889.02K
2024Q1
362
88.56M
87.42%
+4.86M
2023Q4
367
76.77M
98.07%
+993.74K
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
TCG Crossover Management, LLC
10.00M
9.06%
--
--
Dec 31, 2025
Polaris Venture Partners
6.85M
6.21%
-3.00M
-30.45%
Sep 30, 2025
Rosenthal (Arnon)
5.83M
5.29%
+34.38K
+0.59%
Mar 13, 2026
BlackRock Institutional Trust Company, N.A.
5.54M
5.02%
+18.72K
+0.34%
Dec 31, 2025
Acadian Asset Management LLC
3.44M
3.12%
+1.07M
+45.07%
Dec 31, 2025
Foresite Capital Management, LLC
3.89M
3.52%
+3.89M
--
Dec 31, 2025
Merck & Co Inc
3.55M
3.21%
--
--
Dec 31, 2025
683 Capital Management LLC
3.35M
3.04%
+2.35M
+235.00%
Dec 31, 2025
Balyasny Asset Management LP
3.27M
2.96%
+3.27M
--
Dec 31, 2025
View more
ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Invesco NASDAQ Future Gen 200 ETF
0.34%
iShares Neuroscience and Healthcare ETF
0.17%
iShares Micro-Cap ETF
0.02%
ProShares Ultra Nasdaq Biotechnology
0.02%
iShares Russell 2000 Value ETF
0.01%
Invesco Nasdaq Biotechnology ETF
0.01%
iShares Biotechnology ETF
0.01%
Global X Aging Population ETF
0%
State Street SPDR S&P Biotech ETF
0%
Virtus LifeSci Biotech Clinical Trials ETF
0%
View more
Invesco NASDAQ Future Gen 200 ETF
Proportion0.34%
iShares Neuroscience and Healthcare ETF
Proportion0.17%
iShares Micro-Cap ETF
Proportion0.02%
ProShares Ultra Nasdaq Biotechnology
Proportion0.02%
iShares Russell 2000 Value ETF
Proportion0.01%
Invesco Nasdaq Biotechnology ETF
Proportion0.01%
iShares Biotechnology ETF
Proportion0.01%
Global X Aging Population ETF
Proportion0%
State Street SPDR S&P Biotech ETF
Proportion0%
Virtus LifeSci Biotech Clinical Trials ETF
Proportion0%