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 operating margin
Operating margin is operating income as a percentage of revenue.
Alector's operating margin for the twelve months ending Sep 30, 2026 was 20.2%. For fiscal 2025 it was -741.3%, against -144.2% the year before. The highest annual figure on record is -18.0% in fiscal 2021.
Annual operating margin
| Period | Period end | Value | Change (pts) |
|---|---|---|---|
| FY2025 | Dec 31, 2025 | -741.3% | −597.1 |
| FY2024 | Dec 31, 2024 | -144.2% | +12.1 |
| FY2023 | Dec 31, 2023 | -156.3% | −53.1 |
| FY2022 | Dec 31, 2022 | -103.2% | −85.1 |
| FY2021 | Dec 31, 2021 | -18.0% | +907.0 |
| FY2020 | Dec 31, 2020 | -925.1% | −385.9 |
| FY2019 | Dec 31, 2019 | -539.2% | −332.2 |
| FY2018 | Dec 31, 2018 | -207.0% | +668.0 |
| FY2017 | Dec 31, 2017 | -874.9% | – |
Quarterly operating margin
Change is against the same quarter a year earlier.
| Period | Period end | Value | Change (pts) |
|---|---|---|---|
| Q3 FY2026 | Sep 30, 2026 | 76.0% | +1229.7 |
| Q2 FY2026 | Jun 30, 2026 | -734.7% | −301.2 |
| Q1 FY2026 | Mar 31, 2026 | -2382.3% | −1165.8 |
| Q4 FY2025 | Dec 31, 2025 | -634.4% | −621.0 |
| Q3 FY2025 | Sep 30, 2025 | -1153.6% | −837.9 |
| Q2 FY2025 | Jun 30, 2025 | -433.6% | −131.2 |
| Q1 FY2025 | Mar 31, 2025 | -1216.5% | −941.6 |
| Q4 FY2024 | Dec 31, 2024 | -13.4% | +298.3 |
| Q3 FY2024 | Sep 30, 2024 | -315.7% | +239.6 |
| Q2 FY2024 | Jun 30, 2024 | -302.4% | −296.0 |
| Q1 FY2024 | Mar 31, 2024 | -274.9% | +27.9 |
| Q4 FY2023 | Dec 31, 2023 | -311.6% | +72.8 |
| Q3 FY2023 | Sep 30, 2023 | -555.3% | −233.8 |
| Q2 FY2023 | Jun 30, 2023 | -6.4% | −18.3 |
| Q1 FY2023 | Mar 31, 2023 | -302.8% | −122.5 |
| Q4 FY2022 | Dec 31, 2022 | -384.4% | +13.9 |
| Q3 FY2022 | Sep 30, 2022 | -321.5% | −390.7 |
| Q2 FY2022 | Jun 30, 2022 | 11.9% | +854.2 |
| Q1 FY2022 | Mar 31, 2022 | -180.3% | +1100.4 |
| Q4 FY2021 | Dec 31, 2021 | -398.2% | +688.9 |
| Q3 FY2021 | Sep 30, 2021 | 69.3% | +979.6 |
| Q2 FY2021 | Jun 30, 2021 | -842.3% | +627.3 |
| Q1 FY2021 | Mar 31, 2021 | -1280.7% | −693.9 |
| Q4 FY2020 | Dec 31, 2020 | -1087.1% | −548.2 |
| Q3 FY2020 | Sep 30, 2020 | -910.4% | +356.3 |
| Q2 FY2020 | Jun 30, 2020 | -1469.7% | −1077.1 |
| Q1 FY2020 | Mar 31, 2020 | -586.8% | −216.4 |
| Q4 FY2019 | Dec 31, 2019 | -538.9% | −331.0 |
| Q3 FY2019 | Sep 30, 2019 | -1266.7% | −1008.1 |
| Q2 FY2019 | Jun 30, 2019 | -392.5% | −220.5 |
| Q1 FY2019 | Mar 31, 2019 | -370.4% | −182.9 |
| Q4 FY2018 | Dec 31, 2018 | -207.9% | – |
| Q3 FY2018 | Sep 30, 2018 | -258.6% | – |
| Q2 FY2018 | Jun 30, 2018 | -172.0% | – |
| Q1 FY2018 | Mar 31, 2018 | -187.5% | – |
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