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Alector ALEC · USD

Health Care · US listing · 🇺🇸 United States

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2.46

+7.42%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Fidelity Management & Research Company LLC15m13.74%+608.7k30 Jun 2025
BlackRock Institutional Trust Company, N.A.6.2m5.67%−228.9k30 Jun 2025
The Vanguard Group, Inc.6m5.49%−65.3k30 Jun 2025
Rosenthal (Arnon)5.5m5.06%−51.6k2 Sept 2025
T. Rowe Price Associates, Inc.4.8m4.43%+4.2m30 Jun 2025
Merck & Co Inc3.5m3.25%—30 Jun 2025
Acadian Asset Management LLC2.2m1.99%+729.7k30 Jun 2025
Eversept Partners, LP2m1.82%+1.4m30 Jun 2025
Geode Capital Management, L.L.C.2m1.82%+20k30 Jun 2025
Adar1 Capital Management LLC1.7m1.58%+1.3m30 Jun 2025
State Street Investment Management (US)1.7m1.57%+69.6k30 Jun 2025
BlackRock Financial Management, Inc.1.4m1.28%−10.9k30 Jun 2025
Jacobs Levy Equity Management, Inc.1.3m1.21%−11.2k30 Jun 2025
Euclidean Capital, L.L.C.1.3m1.20%—30 Jun 2025
Renaissance Technologies LLC1.3m1.15%+221k30 Jun 2025

Insider trades

Purchases and sales by directors and officers, as filed with the regulator

DateWhoTypeSharesPriceValue
10 Mar 2026 ↗Wong-Sarad GracePrincipal Accounting OfficerSale1k2.65$2,650
3 Mar 2026 ↗Wong-Sarad GracePrincipal Accounting OfficerSale3.4k2.08$7,012
2 Mar 2026 ↗Wong-Sarad GracePrincipal Accounting OfficerSale8.1k2.12$17,138
2 Mar 2026 ↗Rosenthal ArnonChief Executive OfficerSale81.9k2.12$173,822
2 Mar 2026 ↗Berkley Neil LindsayCFO & Chief Business OfficerSale29.6k2.12$62,954
26 Feb 2026 ↗Wong-Sarad GracePrincipal Accounting OfficerSale4.1k2.50$10,198

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

10.3m

+66.8% on the period before. 1.0 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

48.7%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 29 Sept 20269,538 shares
  • 28 Sept 202614,722 shares
  • 22 Sept 20262 shares
  • 15 Sept 20261,978 shares
  • 14 Sept 20262,208 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.