GPGI, Inc. Class A (GPGI)
GPGI moved a median of +0.10% 30 minutes after news, and -0.15% by the close. How GPGI actually reacts to news — the realized, point-in-time move the market made, measured across 469 labeled events over the last three years with zero look-ahead.
GPGI’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.04% | 48% | 468 |
| 30-min | +0.10% | 56% | 468 |
| 60-min | 0.00% | 50% | 468 |
| to close | -0.15% | 48% | 453 |
| Middle 50% of GPGI reactions | -0.73% to +0.80% |
|---|---|
| Median reaction (30-min) | +0.10% |
| Measured reactions | 469 |
Half of all GPGI, Inc. Class A news events land between -0.73% and +0.80% 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 GPGI moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to GPGI's baseline. Nothing else.
Recent GPGI events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.33% | +4.44% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.04% | +2.01% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.37% | +1.39% | |
| GPGI, Inc., f/k/a CompoSecure, Inc. (NYSE: GPGI); New Era Energy & Digital, Inc. (NASDAQ: NUAI); Power Solutions International, Inc. (NASDAQ: PSIX); and PROCEPT BioRobotics Corporation (NASDAQ: PRCT): Grabar Law Office is Investigating Claims on Your Beha | Press release | GlobeNewswire | -0.32% | +3.28% | |
| CompoSecure Opens New London Design Centre to Meet Growing International Demand for Premium Metal Cards | Press release | GlobeNewswire | +1.19% | +2.29% | |
| GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.09% | +1.03% | |
| GPGI, Inc., f/k/a CompoSecure, Inc. (NYSE: GPGI); New Era Energy & Digital, Inc. (NASDAQ: NUAI); Power Solutions International, Inc. (NASDAQ: PSIX); and PROCEPT BioRobotics Corporation (NASDAQ: PRCT): Grabar Law Office is Investigating Claims on Your Beha | Press release | GlobeNewswire | -0.16% | -0.68% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.25% | -0.08% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.32% | +1.53% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against GPGI, Inc. f/k/a CompoSecure, Inc. (GPGI) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +0.08% | +1.90% | |
| Kaplan Fox Encourages GPGI, Inc. (NYSE: GPGI) Investors to Contact the Firm Before the Deadline on September 14, 2026 for a Leadership Role | Press release | GlobeNewswire | +0.27% | +1.13% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | +0.08% | +0.83% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | +1.75% | +1.53% | |
| Kaplan Fox Reminds GPGI, Inc. (NYSE: GPGI) Investors with Significant Losses to Seek a Leadership Role Before Deadline on September 14, 2026 | Press release | GlobeNewswire | -0.60% | +7.22% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | +0.96% | -2.00% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | -0.19% | +1.40% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | +0.00% | +1.08% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | -0.19% | -0.85% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | -0.11% | +2.81% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | -0.11% | +2.81% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | +0.67% | -3.65% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | PR Newswire | -0.76% | -1.53% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | -0.76% | -1.53% | |
| Form 10-Q GPGI, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.90% | -3.97% | |
| Form 8-K GPGI, Inc. For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -0.90% | -3.97% | |
| GPGI Reports Second Quarter 2026 Results | Press release | GlobeNewswire | -0.90% | -3.97% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | -0.90% | -3.97% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | -1.90% | +7.65% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | -1.90% | +7.65% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | -0.57% | +3.63% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Bronstein, Gewirtz & Grossman, LLC (GPGI) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.59% | -1.80% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.25% | -0.18% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | GlobeNewswire | +0.00% | -0.71% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating GPGI, Inc. (GPGI) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.58% | +2.07% | |
| GPGI Announces Date of Second Quarter 2026 Earnings Call | Press release | GlobeNewswire | +1.23% | +1.51% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights - GPGI | Press release | PR Newswire | +1.23% | +1.51% | |
| Shareholders who lost money in shares of GPGI, Inc. (NYSE: GPGI) Should Contact Wolf Haldenstein Immediately | Press release | PR Newswire | +0.00% | -0.71% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against GPGI, Inc. (GPGI) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.14% | -2.09% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.24% | +0.75% | |
| GPGI, Inc. (GPGI) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +1.61% | +1.40% | |
| GPGI, Inc. Sued for Securities Law Violations - Contact the DJS Law Group to Discuss Your Rights – GPGI | Press release | Business Wire | +1.61% | +1.40% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.34% | +1.64% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.07% | +0.00% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against GPGI, Inc. (GPGI) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.17% | +0.65% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against GPGI, Inc. (GPGI) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +0.10% | -1.14% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.87% | -1.11% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating GPGI, Inc. (GPGI) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +1.87% | -1.11% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating GPGI, Inc. (GPGI) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.24% | -0.20% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages GPGI, Inc. (GPGI) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.17% | +1.71% | |
| GPGI, Inc. (GPGI) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.32% | -0.15% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the GPGI section they belong to.
Where else GPGI is measured.
GPGI earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is GPGI, Inc. Class A's median reaction calculated?
Every labeled GPGI 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 469 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. 56% of GPGI'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 GPGI'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.