Astera Labs, Inc. (ALAB)
ALAB moved a median of +0.24% 30 minutes after news, and +0.57% by the close. How ALAB actually reacts to news — the realized, point-in-time move the market made, measured across 449 labeled events over the last three years with zero look-ahead.
ALAB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.14% | 47% | 445 |
| 30-min | +0.24% | 55% | 445 |
| 60-min | +0.57% | 57% | 445 |
| to close | +0.57% | 55% | 440 |
| Middle 50% of ALAB reactions | -1.50% to +2.19% |
|---|---|
| Median reaction (30-min) | +0.24% |
| Measured reactions | 449 |
Half of all Astera Labs, Inc. news events land between -1.50% and +2.19% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ALAB reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 25 | -0.73% | 40% | +0.74% |
| Analyst downgrades | 21 | -3.33% | 38% | +0.84% |
| Coverage initiations | 69 | +2.00% | 67% | -3.67% |
| Rating reiterations | 105 | -0.21% | 46% | -0.44% |
| Price-target raises | 33 | +0.05% | 52% | -0.43% |
| Price-target cuts | 15 | -0.26% | 33% | -0.94% |
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. See how ALAB ranks against every other measured name →
That’s how ALAB usually reacts — get an email when it moves on news →Email me when ALAB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ALAB's baseline. Nothing else.
Recent ALAB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Astera Labs Bolsters Leo Smart Memory Controller Family for Agentic AI and General-Purpose Cloud Workloads | Press release | GlobeNewswire | -0.46% | -2.66% | |
| Astera Labs to Participate in the Citi 2026 Global TMT Conference | Press release | GlobeNewswire | -0.14% | -0.27% | |
| Form 10-Q Astera Labs, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.13% | -7.97% | |
| Astera Labs Reports Second Quarter 2026 Financial Results | Press release | GlobeNewswire | -2.13% | -7.97% | |
| Form 8-K Astera Labs, Inc. For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -2.13% | -7.97% | |
| Astera Labs Expands Taurus Family with Industry’s First OCP-Standard Footprint Compatible 3.2T Smart Retimers and Smart Redrivers | Press release | GlobeNewswire | -0.86% | -2.42% | |
| Astera Labs Announces Conference Call to Review Second Quarter 2026 Financial Results | Press release | GlobeNewswire | +2.73% | -0.10% | |
| Form 8-K Astera Labs, Inc. For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | +0.56% | -3.48% | |
| Astera Labs Expands Taiwan Operations to Accelerate Global AI Infrastructure Buildout | Press release | GlobeNewswire | -3.26% | -0.22% | |
| Form SD Astera Labs, Inc. | SEC filing · Form SD | SEC EDGAR | -2.09% | -1.34% | |
| Astera Labs to Host Press Conference, Live Demos, and Technical Talks at Computex 2026 | Press release | GlobeNewswire | -0.59% | +0.57% | |
| Astera Labs Announces Second Quarter 2026 Financial Conference Participation | Press release | GlobeNewswire | +0.84% | +7.25% | |
| Form 10-Q Astera Labs, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -5.40% | -7.00% | |
| Astera Labs Extends Leadership in Open, AI Scale-Up Networking with New 320 Lane Scorpio X-Series Smart Fabric Switch | Press release | GlobeNewswire | -5.40% | -7.00% | |
| Astera Labs Reports First Quarter 2026 Financial Results | Press release | GlobeNewswire | -5.40% | -7.00% | |
| Form 8-K Astera Labs, Inc. For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -5.40% | -7.00% | |
| Form S-8 Astera Labs, Inc. | SEC filing · Form S-8 | SEC EDGAR | -5.40% | -7.00% | |
| Form ARS Astera Labs, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +2.12% | +4.72% | |
| Form DEF 14A Astera Labs, Inc. For: Jun 04 | SEC filing · Form DEF | SEC EDGAR | +2.12% | +4.72% | |
| Form DEFA14A Astera Labs, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | +2.12% | +4.72% | |
| Astera Labs Announces Conference Call to Review First Quarter 2026 Financial Results | Press release | GlobeNewswire | +2.83% | +0.75% | |
| Form S-3ASR Astera Labs, Inc. | SEC filing · Form S-3ASR | SEC EDGAR | +1.87% | +5.42% | |
| Astera Labs to Participate in the 38th Annual Roth Conference | Press release | GlobeNewswire | +0.58% | -2.61% | |
| Form 10-K Astera Labs, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -1.71% | +0.79% | |
| Astera Labs Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | GlobeNewswire | -2.73% | -10.49% | |
| Form 8-K Astera Labs, Inc. For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | -2.73% | -10.49% | |
| Form 8-K Astera Labs, Inc. For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | -2.73% | -10.49% | |
| Form 8-K Astera Labs, Inc. For: Feb 10 | SEC filing · Form 8-K | SEC EDGAR | -2.73% | -10.49% | |
| Astera Labs Expands Global Footprint with New Israel Design Center to Support Growing Demand for AI Connectivity Solutions | Press release | GlobeNewswire | +4.19% | +10.67% | |
| Astera Labs Broadens Scorpio X-Series Smart Fabric Switch Roadmap to Address Expanding Scale-Up Market Opportunities | Press release | GlobeNewswire | -4.45% | -3.98% | |
| UPDATE -- Astera Labs Broadens Scorpio X-Series Smart Fabric Switch Roadmap to Address Expanding Scale-Up Market Opportunities | Press release | GlobeNewswire | -4.45% | -3.98% | |
| Form 8-K Astera Labs, Inc. For: Jan 20 | SEC filing · Form 8-K | SEC EDGAR | -4.08% | -4.34% | |
| Astera Labs Announces First Quarter 2026 Financial Conference Participation | Press release | GlobeNewswire | +1.36% | +3.06% | |
| Astera Labs Announces Conference Call to Review Fourth Quarter 2025 Financial Results | Press release | GlobeNewswire | -0.04% | +2.88% | |
| Astera Labs Expands Connectivity Portfolio with Custom Solutions | Press release | GlobeNewswire | -0.89% | -17.47% | |
| Astera Labs' Leo CXL Smart Memory Controllers on Microsoft Azure M-series Virtual Machines Overcome the Memory Wall | Press release | GlobeNewswire | -0.23% | +1.78% | |
| Form 10-Q Astera Labs, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -3.31% | -0.94% | |
| Astera Labs Announces Financial Results for the Third Quarter of Fiscal Year 2025 | Press release | GlobeNewswire | -3.31% | -0.94% | |
| Form 8-K Astera Labs, Inc. For: Nov 04 | SEC filing · Form 8-K | SEC EDGAR | -3.31% | -0.94% | |
| Astera Labs to Acquire aiXscale Photonics | Press release | GlobeNewswire | +2.74% | +5.65% | |
| Form 8-K Astera Labs, Inc. For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | +2.74% | +5.65% | |
| Astera Labs Joins Arm Total Design to Accelerate Custom AI Infrastructure Solutions | Press release | GlobeNewswire | +0.38% | -7.38% | |
| Astera Labs Showcases Rack-Scale AI Ecosystem Momentum at OCP Global Summit | Press release | GlobeNewswire | -2.44% | -7.20% | |
| Astera Labs Announces Conference Call to Review Third Quarter 2025 Financial Results | Press release | GlobeNewswire | -1.15% | +2.15% | |
| Options Trading Available on Recently Launched Tradr ETFs: LABX, DOGD, MDBX and LRCU | Press release | PR Newswire | +0.33% | +2.33% | |
| Astera Labs Announces Third Quarter 2025 Financial Conference Participation | Press release | GlobeNewswire | -0.01% | +2.32% | |
| Tradr Unveils First-to-Market Leveraged ETFs on Lam Research & MongoDB | Press release | PR Newswire | -0.86% | — | |
| Tradr Readies Leveraged Single-Stock ETFs on ALAB and DDOG | Press release | PR Newswire | +1.10% | +2.84% | |
| Form 10-Q Astera Labs, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +5.79% | +5.69% | |
| Astera Labs Announces Financial Results for the Second Quarter of Fiscal Year 2025 | Press release | GlobeNewswire | +5.79% | +5.69% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ALAB section they belong to.
Where else ALAB is measured.
ALAB earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Astera Labs, Inc.'s median reaction calculated?
Every labeled ALAB 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 449 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. 55% of ALAB'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 ALAB'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.