Alector, Inc. (ALEC)
ALEC moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How ALEC actually reacts to news — the realized, point-in-time move the market made, measured across 410 labeled events over the last three years with zero look-ahead.
ALEC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 49% | 403 |
| 30-min | 0.00% | 46% | 404 |
| 60-min | -0.23% | 47% | 404 |
| to close | 0.00% | 48% | 400 |
| Middle 50% of ALEC reactions | -1.70% to +1.95% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 410 |
Half of all Alector, Inc. news events land between -1.70% and +1.95% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ALEC reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 13 | +1.98% | 100% | +1.39% |
| Analyst downgrades | 25 | -1.95% | 28% | +4.54% |
| Coverage initiations | 10 | -1.73% | 40% | +8.52% |
| Rating reiterations | 31 | +0.24% | 52% | -0.58% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how ALEC ranks against every other measured name →
That’s how ALEC usually reacts — get an email when it moves on news →Email me when ALEC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ALEC's baseline. Nothing else.
Recent ALEC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Alector Announces Pricing of Underwritten Offering | Press release | GlobeNewswire | -2.75% | -15.60% | |
| Form 8-K Alector, Inc. For: Oct 15 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Alector, Inc. For: Oct 13 | SEC filing · Form 8-K | SEC EDGAR | -0.54% | +2.17% | |
| Alector to Host Virtual Research and Development Event Highlighting Wholly Owned Alector Brain Carrier (ABC)- Enabled Pipeline | Press release | GlobeNewswire | +1.63% | +6.32% | |
| Alector Enters Global License Agreement with Genentech for Brain Penetrant GCase Enzyme Replacement Therapy for Parkinson’s Disease and Other Neurodegenerative Diseases | Press release | GlobeNewswire | -14.29% | -27.11% | |
| Form 8-K Alector, Inc. For: Sep 30 | SEC filing · Form 8-K | SEC EDGAR | -14.29% | -27.11% | |
| Alector to Participate in Upcoming Healthcare Conferences | Press release | GlobeNewswire | -0.40% | -2.38% | |
| Alector Reports Second Quarter 2026 Financial Results and Provides Business Update | Press release | GlobeNewswire | +2.17% | -3.26% | |
| Form 10-Q Alector, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.17% | -3.26% | |
| Form 8-K Alector, Inc. For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +2.17% | -3.26% | |
| Form 8-K Alector, Inc. For: Jul 06 | SEC filing · Form 8-K | SEC EDGAR | -0.27% | -10.66% | |
| Form 8-K Alector, Inc. For: Jun 17 | SEC filing · Form 8-K | SEC EDGAR | -0.95% | +10.76% | |
| Alector Reports First Quarter 2026 Financial Results and Provides Business Update | Press release | GlobeNewswire | +7.55% | -0.94% | |
| Form 10-Q Alector, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +7.55% | -0.94% | |
| Form 8-K Alector, Inc. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +7.55% | -0.94% | |
| Form EFFECT Alector, Inc. | SEC filing · Form EFFECT | SEC EDGAR | +1.72% | +1.29% | |
| Alector to Discontinue Phase 2 PROGRESS-AD Trial of Nivisnebart (AL101/GSK4527226) in Early Alzheimer’s Disease Following Interim Futility Analysis | Press release | GlobeNewswire | +1.75% | +3.49% | |
| Form ARS Alector, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.42% | -2.54% | |
| Form DEF 14A Alector, Inc. For: Apr 21 | SEC filing · Form DEF | SEC EDGAR | -0.42% | -2.54% | |
| Form DEFA14A Alector, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -0.42% | -2.54% | |
| Form S-3 Alector, Inc. | SEC filing · Form S-3 | SEC EDGAR | +3.13% | -1.79% | |
| Alector Reports Fourth Quarter and Full Year 2025 Financial Results and Provides Business Update | Press release | GlobeNewswire | +2.83% | +20.75% | |
| Form 10-K Alector, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +2.83% | +20.75% | |
| Form 8-K Alector, Inc. For: Feb 25 | SEC filing · Form 8-K | SEC EDGAR | +2.83% | +20.75% | |
| Form S-8 Alector, Inc. | SEC filing · Form S-8 | SEC EDGAR | +2.83% | +20.75% | |
| Alector to Participate in the TD Cowen 46th Annual Health Care Conference | Press release | GlobeNewswire | +0.95% | +4.29% | |
| Alector Appoints Neil Berkley as Chief Financial Officer and Chief Business Officer | Press release | GlobeNewswire | -3.29% | -6.58% | |
| Form 8-K Alector, Inc. For: Dec 10 | SEC filing · Form 8-K | SEC EDGAR | -3.29% | -6.58% | |
| Alector to Participate in the Bank of America CNS Therapeutics Conference | Press release | GlobeNewswire | -0.81% | -7.32% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.00% | +3.45% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Alector, Inc. (ALEC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | +0.79% | +1.19% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Alector, Inc. (ALEC) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.39% | +0.00% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.98% | +1.59% | |
| Alector, Inc. (ALEC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.00% | -8.74% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.00% | +0.40% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.00% | -0.80% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Alector, Inc. (ALEC) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +0.40% | -0.80% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Alector, Inc. (ALEC) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +0.39% | — | |
| Alector, Inc. (ALEC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | — | — | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Alector, Inc. (ALEC) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.41% | +3.64% | |
| Alector Reports Third Quarter 2025 Financial Results and Provides Business Update | Press release | GlobeNewswire | -0.79% | +0.79% | |
| Form 10-Q Alector, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.79% | +0.79% | |
| Form 8-K Alector, Inc. For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | -0.79% | +0.79% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.79% | -1.18% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Alector, Inc. (ALEC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | +0.72% | -5.38% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.35% | +0.00% | |
| Alector, Inc. (ALEC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.64% | -5.47% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Alector, Inc. (ALEC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.26% | -2.21% | |
| Alector, Inc. (ALEC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.10% | -2.19% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Alector, Inc. (ALEC) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.66% | -1.95% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ALEC section they belong to.
Where else ALEC is measured.
ALEC earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Alector, Inc.'s median reaction calculated?
Every labeled ALEC news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 410 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 46% of ALEC's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does ALEC's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.