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Alector, Inc. (ALEC) stock

ALECNasdaqBiological Products, (No Diagnostic Substances)Fiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 12/3069% below fair value
$2.54+0.09 (+3.67%)

Close on Nov 13, 2026Market cap $283.61MP/E 7.3Yield –

Alector profit margin

Profit margin (net margin) is net income as a percentage of revenue.

Alector's profit margin for the twelve months ending Sep 30, 2026 was 23.9%. For fiscal 2025 it was -679.2%, against -118.4% the year before. The highest annual figure on record is -17.5% in fiscal 2021.

Annual profit margin

PeriodPeriod endValueChange (pts)
FY2025Dec 31, 2025-679.2%−560.8
FY2024Dec 31, 2024-118.4%+15.9
FY2023Dec 31, 2023-134.3%−34.5
FY2022Dec 31, 2022-99.8%−82.2
FY2021Dec 31, 2021-17.5%+884.1
FY2020Dec 31, 2020-901.6%−405.0
FY2019Dec 31, 2019-496.7%−307.9
FY2018Dec 31, 2018-188.8%+680.8
FY2017Dec 31, 2017-869.6%–

Quarterly profit margin

Change is against the same quarter a year earlier.

PeriodPeriod endValueChange (pts)
Q3 FY2026Sep 30, 202676.5%+1139.9
Q2 FY2026Jun 30, 2026-692.5%−304.8
Q1 FY2026Mar 31, 2026-2192.2%−1090.6
Q4 FY2025Dec 31, 2025-597.5%−593.7
Q3 FY2025Sep 30, 2025-1063.4%−788.2
Q2 FY2025Jun 30, 2025-387.7%−131.2
Q1 FY2025Mar 31, 2025-1101.6%−874.6
Q4 FY2024Dec 31, 2024-3.8%+268.3
Q3 FY2024Sep 30, 2024-275.2%+213.1
Q2 FY2024Jun 30, 2024-256.4%−258.9
Q1 FY2024Mar 31, 2024-226.9%+50.2
Q4 FY2023Dec 31, 2023-272.1%+91.4
Q3 FY2023Sep 30, 2023-488.3%−177.5
Q2 FY2023Jun 30, 20232.4%−9.9
Q1 FY2023Mar 31, 2023-277.1%−94.8
Q4 FY2022Dec 31, 2022-363.5%+33.9
Q3 FY2022Sep 30, 2022-310.7%−380.1
Q2 FY2022Jun 30, 202212.4%+852.0
Q1 FY2022Mar 31, 2022-182.3%+1087.1
Q4 FY2021Dec 31, 2021-397.4%+677.8
Q3 FY2021Sep 30, 202169.4%+962.1
Q2 FY2021Jun 30, 2021-839.6%+590.2
Q1 FY2021Mar 31, 2021-1269.4%−711.3
Q4 FY2020Dec 31, 2020-1075.2%−566.5
Q3 FY2020Sep 30, 2020-892.7%+284.5
Q2 FY2020Jun 30, 2020-1429.8%−1074.8
Q1 FY2020Mar 31, 2020-558.1%−226.9
Q4 FY2019Dec 31, 2019-508.7%−318.7
Q3 FY2019Sep 30, 2019-1177.2%−941.7
Q2 FY2019Jun 30, 2019-355.1%−198.6
Q1 FY2019Mar 31, 2019-331.1%−159.6
Q4 FY2018Dec 31, 2018-190.0%–
Q3 FY2018Sep 30, 2018-235.5%–
Q2 FY2018Jun 30, 2018-156.4%–
Q1 FY2018Mar 31, 2018-171.5%–

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