Allakos Inc. (ALLK)
ALLK moved a median of -0.65% 30 minutes after news, and 0.00% by the close. How ALLK actually reacts to news — the realized, point-in-time move the market made, measured across 248 labeled events over the last three years with zero look-ahead.
ALLK’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.19% | 30% | 217 |
| 30-min | -0.65% | 35% | 217 |
| 60-min | -0.39% | 41% | 217 |
| to close | 0.00% | 47% | 217 |
| Middle 50% of ALLK reactions | -2.07% to +0.91% |
|---|---|
| Median reaction (30-min) | -0.65% |
| Measured reactions | 248 |
Half of all Allakos Inc. news events land between -2.07% and +0.91% at 30 minutes.
Reaction stats as of 2026-08-31. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ALLK reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades | 10 | 0.00% | 10% | -4.15% |
| Rating reiterations | 14 | -0.36% | 29% | +0.47% |
Last 3 years, pulled 2026-08-31. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 3 further classes were observed with fewer than 10 measured events and are not published. See how ALLK ranks against every other measured name →
That’s how ALLK usually reacts — get an email when it moves on news →Email me when ALLK moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ALLK's baseline. Nothing else.
Recent ALLK events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G Allakos Inc. | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form EFFECT Allakos Inc. | SEC filing · Form EFFECT | SEC EDGAR | — | — | |
| Form 8-K Allakos Inc. For: May 15 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form POS AM Allakos Inc. | SEC filing · Form POS | SEC EDGAR | — | — | |
| Form S-8 POS Allakos Inc. | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 10-Q Allakos Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.03% | |
| Form 10-K/A Allakos Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.93% | +1.22% | |
| Allakos Inc. Enters into Agreement to Be Acquired by Concentra Biosciences, LLC for $0.33 in Cash per Share | Press release | GlobeNewswire | +1.73% | +2.98% | |
| ALLK Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of Allakos Inc. Is Fair to Shareholders | Press release | Business Wire | +0.57% | +1.55% | |
| Form 8-K Allakos Inc. For: Apr 01 | SEC filing · Form 8-K | SEC EDGAR | +1.73% | +2.98% | |
| Form 8-K Allakos Inc. For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | +0.04% | -3.14% | |
| Allakos Provides Business Update and Reports Fourth Quarter 2024 Financial Results | Press release | GlobeNewswire | +4.74% | +2.04% | |
| Form 10-K Allakos Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +4.74% | +2.04% | |
| Form 8-K Allakos Inc. For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | +4.74% | +2.04% | |
| Allakos Announces Topline Results from its Phase 1 Trial of AK006 in Patients with Chronic Spontaneous Urticaria and Announces Restructuring | Press release | GlobeNewswire | -3.30% | -21.23% | |
| Form 8-K Allakos Inc. For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | -3.30% | -21.23% | |
| Form S-8 Allakos Inc. | SEC filing · Form S-8 | SEC EDGAR | +1.74% | -5.99% | |
| Form 8-K Allakos Inc. For: Nov 15 | SEC filing · Form 8-K | SEC EDGAR | -0.95% | -3.81% | |
| Allakos Provides Business Update and Reports Third Quarter 2024 Financial Results | Press release | GlobeNewswire | +0.00% | -2.17% | |
| Form 10-Q Allakos Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -2.17% | |
| Form 8-K Allakos Inc. For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.17% | |
| Allakos Announces Phase 1 Trial Results of Subcutaneous AK006 in Healthy Volunteers | Press release | GlobeNewswire | -3.31% | -5.28% | |
| Form 8-K Allakos Inc. For: Oct 10 | SEC filing · Form 8-K | SEC EDGAR | -3.31% | -5.28% | |
| Form 8-K Allakos Inc. For: Aug 13 | SEC filing · Form 8-K | SEC EDGAR | +3.02% | +4.09% | |
| Allakos Provides Business Update and Reports Second Quarter 2024 Financial Results | Press release | GlobeNewswire | +0.00% | -0.03% | |
| Form 10-Q Allakos Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.03% | |
| Form 8-K Allakos Inc. For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.03% | |
| Allakos Announces Positive Results from its Ongoing Phase 1 Trial of AK006 in Healthy Volunteers, with AK006 Demonstrating High Receptor Occupancy on Mast Cells and a Favorable Safety Profile | Press release | GlobeNewswire | +1.79% | -5.36% | |
| Form 8-K Allakos Inc. For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | +1.79% | -5.36% | |
| Allakos Announces First Patient Dosed in Phase 1 Trial of AK006 in Chronic Spontaneous Urticaria | Press release | GlobeNewswire | -1.40% | -2.80% | |
| Form 8-K Allakos Inc. For: May 24 | SEC filing · Form 8-K | SEC EDGAR | -1.40% | -2.80% | |
| Form 8-K Allakos Inc. For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -1.40% | -2.80% | |
| Allakos Provides Business Update and Reports First Quarter 2024 Financial Results | Press release | GlobeNewswire | +0.00% | -0.83% | |
| Form 10-Q Allakos Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.83% | |
| Form 8-K Allakos Inc. For: May 09 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.83% | |
| Form 8-K Allakos Inc. For: Apr 19 | SEC filing · Form 8-K | SEC EDGAR | +0.95% | -2.86% | |
| Form ARS Allakos Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.95% | -2.86% | |
| Form DEF 14A Allakos Inc. For: May 24 | SEC filing · Form DEF | SEC EDGAR | +0.95% | -2.86% | |
| Allakos Provides Business Update and Reports Fourth Quarter and Full Year 2023 Financial Results | Press release | GlobeNewswire | -1.55% | +1.55% | |
| Form 10-K Allakos Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -1.55% | +1.55% | |
| Form 8-K Allakos Inc. For: Mar 14 | SEC filing · Form 8-K | SEC EDGAR | -1.55% | +1.55% | |
| Allakos Presents Preclinical Data Highlighting Inhibition of MRGPRX2-Mediated Mast Cell Activation with AK006 at AAAAI 2024 | Press release | GlobeNewswire | -1.80% | +5.04% | |
| Form 8-K Allakos Inc. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -1.80% | +5.04% | |
| Allakos Announces Publication Highlighting AK006 Mast Cell Inhibition | Press release | GlobeNewswire | +5.15% | +2.21% | |
| Form 8-K Allakos Inc. For: Feb 12 | SEC filing · Form 8-K | SEC EDGAR | +5.15% | +2.21% | |
| Form 8-K Allakos Inc. For: Jan 31 | SEC filing · Form 8-K | SEC EDGAR | -0.79% | +0.79% | |
| Form 8-K Allakos Inc. For: Jan 16 | SEC filing · Form 8-K | SEC EDGAR | -0.46% | -5.99% | |
| Allakos Announces a Restructuring to Focus on Development of AK006 | Press release | GlobeNewswire | -1.73% | -2.46% | |
| Allakos Announces Phase 2 Lirentelimab Trials in Atopic Dermatitis and Chronic Spontaneous Urticaria Did Not Meet Their Primary Endpoints | Press release | GlobeNewswire | -1.73% | -2.46% | |
| Form 8-K Allakos Inc. For: Jan 16 | SEC filing · Form 8-K | SEC EDGAR | -0.46% | -5.99% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ALLK section they belong to.
Where else ALLK is measured.
ALLK earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Heron Therapeutics, Inc. (HRTX) | 249 | -0.34% | 42% |
| Soligenix, Inc. (SNGX) | 249 | -0.70% | 36% |
| Avadel Pharmaceuticals plc - Ordinary Share (AVDL) | 248 | -0.17% | 41% |
| Cytosorbents Corporation (CTSO) | 248 | 0.00% | 48% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Healthcare names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Allakos Inc.'s median reaction calculated?
Every labeled ALLK 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 248 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. 35% of ALLK'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 2026-08-31.
Does ALLK'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.