ERock, Inc. (EROC)
EROC moved a median of +1.67% 30 minutes after news, and -6.72% by the close. How EROC actually reacts to news — the realized, point-in-time move the market made, measured across 39 labeled events over the last three years with zero look-ahead.
EROC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -1.24% | 38% | 37 |
| 30-min | +1.67% | 62% | 37 |
| 60-min | -1.50% | 41% | 37 |
| to close | -6.72% | 22% | 37 |
| Middle 50% of EROC reactions | -1.62% to +1.67% |
|---|---|
| Median reaction (30-min) | +1.67% |
| Measured reactions | 39 |
Half of all ERock, Inc. news events land between -1.62% and +1.67% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when EROC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to EROC's baseline. Nothing else.
Recent EROC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| ERock, HD Construction Equipment Sign Multi-Year Engine Long Block Supply Agreement to Accelerate Manufacturing Capacity | Press release | Business Wire | +0.49% | -1.43% | |
| Form 10-Q ERock, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.41% | +5.03% | |
| ERock Reports Second Quarter 2026 Results | Press release | Business Wire | +3.42% | +6.31% | |
| Form 8-K ERock, Inc. For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | +3.42% | +6.31% | |
| ERock Schedules Second Quarter 2026 Results and Conference Call | Press release | Business Wire | -3.63% | -14.42% | |
| Form 8-K ERock, Inc. For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | +2.63% | -6.81% | |
| Form S-8 ERock, Inc. | SEC filing · Form S-8 | SEC EDGAR | +0.72% | -6.09% | |
| Form EFFECT ERock, Inc. | SEC filing · Form EFFECT | SEC EDGAR | -1.24% | -6.72% | |
| ERock Announces Pricing of Initial Public Offering | Press release | Business Wire | -1.24% | -6.72% | |
| Form 8-A12B ERock, Inc. | SEC filing · Form 8-A12B | SEC EDGAR | — | — | |
| Form CERT ERock, Inc. | SEC filing · Form CERT | SEC EDGAR | — | — |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the EROC section they belong to.
Where else EROC is measured.
EROC earnings → · Analyst actions → · SEC filings →
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Every name we’ve measured, in one place.
How the numbers are made.
How is ERock, Inc.'s median reaction calculated?
Every labeled EROC 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 39 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. 62% of EROC'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 EROC'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.