Willdan Group, Inc. (WLDN)
WLDN moved a median of -0.15% 30 minutes after news, and +0.09% by the close. How WLDN actually reacts to news — the realized, point-in-time move the market made, measured across 295 labeled events over the last three years with zero look-ahead.
WLDN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 50% | 287 |
| 30-min | -0.15% | 43% | 292 |
| 60-min | -0.07% | 47% | 292 |
| to close | +0.09% | 52% | 292 |
| Middle 50% of WLDN reactions | -0.82% to +0.89% |
|---|---|
| Median reaction (30-min) | -0.15% |
| Measured reactions | 295 |
Half of all Willdan Group, Inc. news events land between -0.82% and +0.89% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How WLDN reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 13 | -0.85% | 31% | -0.28% |
| Analyst downgrades | 13 | +0.52% | 62% | -0.68% |
| Rating reiterations | 28 | +0.10% | 54% | +0.72% |
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 WLDN ranks against every other measured name →
That’s how WLDN usually reacts — get an email when it moves on news →Email me when WLDN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WLDN's baseline. Nothing else.
Recent WLDN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Willdan Announces Date of Third Quarter 2026 Earnings Release and Conference Call | Press release | Business Wire | +0.73% | -0.10% | |
| Form 8-K Willdan Group, Inc. For: Sep 22 | SEC filing · Form 8-K | SEC EDGAR | -0.05% | -0.61% | |
| Willdan to Acquire Mantis Innovation, Strengthening Its Position in Energy Management and Infrastructure | Press release | Business Wire | -1.75% | +0.82% | |
| Willdan Expands Power Delivery Engineering Capabilities With KCS Corporation | Press release | Business Wire | +0.82% | -2.52% | |
| Form 10-Q Willdan Group, Inc. For: Jul 03 | SEC filing · Form 10-Q | SEC EDGAR | +0.52% | +0.28% | |
| Form 8-K Willdan Group, Inc. For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +0.52% | +0.28% | |
| Willdan Group Reports Second Quarter Results | Press release | Business Wire | +0.52% | +0.28% | |
| Willdan Selected by Encina Wastewater Authority for $31 Million Cogeneration Project | Press release | Business Wire | +0.41% | -0.55% | |
| Willdan Announces Date of Second Quarter 2026 Earnings Release and Conference Call | Press release | Business Wire | +0.37% | +3.42% | |
| Form S-8 Willdan Group, Inc. | SEC filing · Form S-8 | SEC EDGAR | -0.51% | -3.88% | |
| Form 8-K Willdan Group, Inc. For: Jun 17 | SEC filing · Form 8-K | SEC EDGAR | +1.66% | -5.20% | |
| Form 10-Q Willdan Group, Inc. For: Apr 03 | SEC filing · Form 10-Q | SEC EDGAR | +9.02% | +13.25% | |
| Form 8-K Willdan Group, Inc. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +9.02% | +13.25% | |
| Willdan Group Reports First Quarter Results | Press release | Business Wire | +9.02% | +13.25% | |
| Willdan Expands Commercial Energy Capabilities With Acquisition of Burton Energy Group | Press release | Business Wire | -0.12% | +1.81% | |
| Form ARS Willdan Group, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -1.51% | -7.81% | |
| Form DEF 14A Willdan Group, Inc. For: Jun 17 | SEC filing · Form DEF | SEC EDGAR | -1.51% | -7.81% | |
| Form DEFA14A Willdan Group, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -1.51% | -7.81% | |
| Willdan Wins $27 Million Contract to Redesign and Implement New York City Accelerator Program | Press release | Business Wire | -0.60% | -3.09% | |
| Willdan Announces Date of First Quarter 2026 Earnings Release and Conference Call | Press release | Business Wire | +0.17% | -0.91% | |
| Willdan Selected by Puget Sound Energy to Implement and Expand Program Offerings | Press release | Business Wire | +0.39% | -4.15% | |
| Form 10-K Willdan Group, Inc. For: Jan 02 | SEC filing · Form 10-K | SEC EDGAR | -7.71% | -10.99% | |
| Willdan Selected by Mt. SAC for $49 Million Distributed Energy and Resiliency Project | Press release | Business Wire | -7.71% | -10.99% | |
| Form 8-K Willdan Group, Inc. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -7.71% | -10.99% | |
| Willdan Group Reports Fourth Quarter and Full Year 2025 Results and Provides 2026 Outlook | Press release | Business Wire | -7.71% | -10.99% | |
| Willdan Selected to Implement $112 Million in Energy Savings Projects for City of San Diego | Press release | Business Wire | +2.71% | -1.25% | |
| Willdan Announces Date of Fourth Quarter and Fiscal Year 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.01% | +0.09% | |
| Willdan Completes Acquisition of Compass Municipal Advisors | Press release | Business Wire | +0.20% | +2.06% | |
| E3, a Willdan Company, Publishes Study for Amazon on Rate Design to Manage Large Electric Load Growth | Press release | Business Wire | -0.27% | -0.87% | |
| Willdan Expands Financial Services With Acquisition of Compass Municipal Advisors | Press release | Business Wire | +0.58% | +2.42% | |
| Willdan to Design and Implement $97 Million in Energy and Infrastructure Upgrades for Alameda County | Press release | Business Wire | +0.30% | -1.16% | |
| Form 10-Q Willdan Group, Inc. For: Oct 03 | SEC filing · Form 10-Q | SEC EDGAR | -2.61% | -5.28% | |
| Form 8-K Willdan Group, Inc. For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | -2.61% | -5.28% | |
| Willdan Group Reports Third Quarter Results | Press release | Business Wire | -2.61% | -5.28% | |
| Willdan Announces Date of Third Quarter 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.91% | -3.52% | |
| Willdan Continues Expansion of Energy Efficiency in MA with National Grid Small Business Program | Press release | Business Wire | -0.11% | -1.69% | |
| Willdan Wins $15 Million Contract with SoCalREN to Deliver Commercial Energy Efficiency Programs | Press release | Business Wire | +0.40% | +0.72% | |
| Form 10-Q Willdan Group, Inc. For: Jul 04 | SEC filing · Form 10-Q | SEC EDGAR | +5.50% | +13.65% | |
| Form 8-K Willdan Group, Inc. For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | +5.50% | +13.65% | |
| Willdan Group Reports Second Quarter Results | Press release | Business Wire | +5.50% | +13.65% | |
| Willdan Announces Date of Second Quarter 2025 Earnings Release and Conference Call | Press release | Business Wire | -0.26% | -2.25% | |
| E3, a Willdan Company, Selected for $9.8 Million Technical Services Contract to Support CPUC’s Integrated Resource Plan | Press release | Business Wire | +0.55% | +7.10% | |
| Form S-8 Willdan Group, Inc. | SEC filing · Form S-8 | SEC EDGAR | +0.00% | -0.43% | |
| INVESTOR NOTICE: Kaskela Law LLC Announces Investigation of Willdan Group, Inc. (NASDAQ: WLDN) and Encourages Long-Term Investors to Contact the Firm | Press release | ACCESS Newswire | -1.42% | -0.05% | |
| Form 8-K Willdan Group, Inc. For: Jun 12 | SEC filing · Form 8-K | SEC EDGAR | -0.62% | +1.59% | |
| Form 10-Q Willdan Group, Inc. For: Apr 04 | SEC filing · Form 10-Q | SEC EDGAR | -3.37% | +0.95% | |
| Form 8-K Willdan Group, Inc. For: May 08 | SEC filing · Form 8-K | SEC EDGAR | -3.37% | +0.95% | |
| Willdan Group Reports First Quarter Results | Press release | Business Wire | -3.37% | +0.95% | |
| Willdan Expands and Extends Bank Credit Facilities | Press release | Business Wire | -0.03% | +2.14% | |
| Willdan Releases 2024 Sustainability Report | Press release | Business Wire | -0.04% | +0.01% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the WLDN section they belong to.
Where else WLDN is measured.
WLDN earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Innovative Solutions and Support, Inc. (ISSC) | 295 | 0.00% | 47% |
| Priority Technology Holdings, Inc. (PRTH) | 295 | 0.00% | 44% |
| XPO, Inc. (XPO) | 294 | +0.04% | 52% |
| COMMAND CENTER (CCNI) | 291 | 0.00% | 38% |
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.
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How the numbers are made.
How is Willdan Group, Inc.'s median reaction calculated?
Every labeled WLDN 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 295 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. 43% of WLDN'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 WLDN'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.