Tecogen Inc. (TGEN)
TGEN moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How TGEN actually reacts to news — the realized, point-in-time move the market made, measured across 218 labeled events over the last three years with zero look-ahead.
TGEN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 39% | 176 |
| 30-min | 0.00% | 39% | 187 |
| 60-min | 0.00% | 45% | 194 |
| to close | 0.00% | 37% | 210 |
| Middle 50% of TGEN reactions | -1.08% to +1.56% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 218 |
Half of all Tecogen Inc. news events land between -1.08% and +1.56% 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 TGEN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to TGEN's baseline. Nothing else.
Recent TGEN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Data Center Cuts Electric Bills Substantially with Tecogen's InVerde | Press release | ACCESS Newswire | +1.11% | +2.91% | |
| Form 8-K TECOGEN INC. For: Oct 14 | SEC filing · Form 8-K | SEC EDGAR | +0.23% | +3.60% | |
| Form EFFECT TECOGEN INC. | SEC filing · Form EFFECT | SEC EDGAR | +1.48% | +2.62% | |
| Form EFFECT TECOGEN INC. | SEC filing · Form EFFECT | SEC EDGAR | +1.41% | -0.67% | |
| Form POS AM TECOGEN INC. | SEC filing · Form POS | SEC EDGAR | -0.53% | +6.93% | |
| Form 8-K TECOGEN INC. For: Aug 31 | SEC filing · Form 8-K | SEC EDGAR | -0.50% | +1.01% | |
| Form S-1/A TECOGEN INC. | SEC filing · Form S-1 | SEC EDGAR | -0.50% | +1.01% | |
| Form S-3 TECOGEN INC. | SEC filing · Form S-3 | SEC EDGAR | -0.50% | +1.01% | |
| Form 10-Q TECOGEN INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.71% | |
| Form 8-K TECOGEN INC. For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | +3.72% | +11.44% | |
| Tecogen Reports Second Quarter 2026 Financial Results | Press release | ACCESS Newswire | +3.72% | +11.44% | |
| Tecogen Schedules Earnings Release Date and Conference Call for Q2 2026 Results | Press release | ACCESS Newswire | +0.15% | +8.63% | |
| Tecogen Business Update | Press release | ACCESS Newswire | +1.55% | -3.54% | |
| Form 8-K TECOGEN INC. For: Jun 26 | SEC filing · Form 8-K | SEC EDGAR | +1.93% | -4.64% | |
| Form 8-K TECOGEN INC. For: Jun 05 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.98% | |
| Form 10-Q TECOGEN INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.98% | -0.39% | |
| Form 8-K TECOGEN INC. For: May 12 | SEC filing · Form 8-K | SEC EDGAR | +9.61% | +31.69% | |
| Tecogen Reports First Quarter 2026 Financial Results | Press release | ACCESS Newswire | +9.61% | +31.69% | |
| Tecogen Schedules Earnings Release Date and Conference Call for Q1 2026 Results | Press release | ACCESS Newswire | +1.64% | -0.70% | |
| Form DEF 14A TECOGEN INC. For: Apr 21 | SEC filing · Form DEF | SEC EDGAR | +0.24% | -3.58% | |
| Form 8-K TECOGEN INC. For: Apr 08 | SEC filing · Form 8-K | SEC EDGAR | +1.97% | +15.73% | |
| Form 10-K TECOGEN INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +1.40% | |
| Form 8-K TECOGEN INC. For: Mar 17 | SEC filing · Form 8-K | SEC EDGAR | -1.82% | -29.33% | |
| Tecogen Announces Fourth Quarter and Year-End 2025 Results | Press release | ACCESS Newswire | -1.82% | -29.33% | |
| Tecogen Schedules Earnings Release Date and Conference Call For FY 2025 Results | Press release | ACCESS Newswire | -1.32% | -8.20% | |
| Form 8-K TECOGEN INC. For: Jan 06 | SEC filing · Form 8-K | SEC EDGAR | -2.91% | -0.45% | |
| Form 10-Q TECOGEN INC. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.09% | — | |
| Form 8-K TECOGEN INC. For: Nov 12 | SEC filing · Form 8-K | SEC EDGAR | +2.09% | — | |
| Tecogen Reports Third Quarter 2025 Financial Results | Press release | ACCESS Newswire | +2.09% | — | |
| Tecogen Schedules Earnings Release Date and Conference Call for Q3 2025 Results | Press release | ACCESS Newswire | -1.36% | +7.82% | |
| Form 8-K TECOGEN INC. For: Sep 17 | SEC filing · Form 8-K | SEC EDGAR | +2.86% | +1.57% | |
| Form 8-K TECOGEN INC. For: Sep 02 | SEC filing · Form 8-K | SEC EDGAR | -1.00% | +1.00% | |
| Form 10-Q TECOGEN INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.55% | -21.30% | |
| Form 8-K TECOGEN INC. For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | +1.55% | -21.30% | |
| Tecogen Reports Second Quarter 2025 Financial Results | Press release | ACCESS Newswire | +1.55% | -21.30% | |
| Tecogen Schedules Earnings Release Date and Conference Call for Q2 2025 Results | Press release | ACCESS Newswire | +0.95% | -0.95% | |
| Form 8-K TECOGEN INC. For: Jul 24 | SEC filing · Form 8-K | SEC EDGAR | +0.06% | -1.43% | |
| Tecogen Appoints Roger Deschenes as CFO | Press release | ACCESS Newswire | +0.62% | -1.49% | |
| Form 8-K TECOGEN INC. For: Jul 21 | SEC filing · Form 8-K | SEC EDGAR | +0.58% | -8.80% | |
| Tecogen Inc. Announces Closing of Underwritten Public Offering | Press release | ACCESS Newswire | -0.45% | -8.80% | |
| Form 8-K TECOGEN INC. For: Jul 18 | SEC filing · Form 8-K | SEC EDGAR | +8.51% | +28.88% | |
| Form EFFECT TECOGEN INC. | SEC filing · Form EFFECT | SEC EDGAR | +8.51% | +28.88% | |
| Tecogen Inc. Announces Pricing of Public Offering | Press release | ACCESS Newswire | +8.51% | +28.88% | |
| Form S-1MEF TECOGEN INC. | SEC filing · Form S-1MEF | SEC EDGAR | +8.51% | +28.88% | |
| Form S-1/A TECOGEN INC. | SEC filing · Form S-1 | SEC EDGAR | -0.48% | -3.95% | |
| Form S-1 TECOGEN INC. | SEC filing · Form S-1 | SEC EDGAR | -1.50% | -13.66% | |
| Tecogen to Participate in Roth Conference in London | Press release | ACCESS Newswire | +0.50% | +2.32% | |
| Form 8-K TECOGEN INC. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +0.66% | +1.33% | |
| Tecogen to Participate in Semco Capital's CEO Event | Press release | ACCESS Newswire | -0.56% | -3.56% | |
| Form 10-Q TECOGEN INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.01% | -11.08% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the TGEN section they belong to.
Where else TGEN is measured.
TGEN earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Reliance, Inc. (RS) | 218 | -0.03% | 45% |
| Southern Copper Corporation (SCCO) | 218 | -0.03% | 47% |
| CONSOL Energy Inc. (CEIX) | 216 | -0.44% | 39% |
| Orion S.A. Common Shares (OEC) | 214 | -0.02% | 45% |
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 Basic Materials names, measured the same way →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Tecogen Inc.'s median reaction calculated?
Every labeled TGEN 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 218 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. 39% of TGEN'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 TGEN'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.