Tetra Tech, Inc. (TTEK)
TTEK moved a median of +0.14% 30 minutes after news, and +0.27% by the close. How TTEK actually reacts to news — the realized, point-in-time move the market made, measured across 315 labeled events over the last three years with zero look-ahead.
TTEK’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 50% | 315 |
| 30-min | +0.14% | 54% | 315 |
| 60-min | +0.08% | 54% | 315 |
| to close | +0.27% | 58% | 312 |
| Middle 50% of TTEK reactions | -0.59% to +0.74% |
|---|---|
| Median reaction (30-min) | +0.14% |
| Measured reactions | 315 |
Half of all Tetra Tech, Inc. news events land between -0.59% and +0.74% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How TTEK reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 14 | +0.23% | 57% | -0.05% |
| Analyst downgrades | 13 | +0.18% | 54% | +0.36% |
| Rating reiterations | 32 | +0.01% | 50% | +0.11% |
| Price-target raises | 18 | +0.49% | 67% | +0.47% |
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 TTEK ranks against every other measured name →
That’s how TTEK usually reacts — get an email when it moves on news →Email me when TTEK moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to TTEK's baseline. Nothing else.
Recent TTEK events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Tetra Tech Appoints Group Presidents | Press release | Business Wire | -0.41% | -0.09% | |
| Form 8-K TETRA TECH INC For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | +0.55% | -0.08% | |
| Tetra Tech Announces $500 Million Increase to its Share Repurchase Program | Press release | Business Wire | +0.55% | -0.08% | |
| Tetra Tech Awarded $16.8 Million EPA Land Revitalization Technical Services Contract | Press release | Business Wire | -0.47% | +0.35% | |
| Tetra Tech Awarded $12.7 Million MCC Engineering Services Contracts | Press release | Business Wire | +0.91% | +0.55% | |
| Tetra Tech Awarded $49 Million Multiple-Award Contract for Coastal Geospatial Services | Press release | Business Wire | -0.17% | -1.86% | |
| Form S-8 TETRA TECH INC | SEC filing · Form S-8 | SEC EDGAR | -0.61% | +0.93% | |
| Form 10-Q TETRA TECH INC For: Jun 28 | SEC filing · Form 10-Q | SEC EDGAR | +1.13% | +0.42% | |
| Form 8-K TETRA TECH INC For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -4.10% | -3.31% | |
| Tetra Tech Reports Strong Third Quarter 2026 Results | Press release | Business Wire | -4.10% | -3.31% | |
| FAA Selects Tetra Tech for $27 Million Major Airspace Redesign Task Order Contract | Press release | Business Wire | +1.26% | -0.91% | |
| Tetra Tech Selected to Design Largest Dedicated PFAS Water Treatment Facility in the United States | Press release | Business Wire | +0.26% | -2.27% | |
| U.S. EPA Office of Water Awards Tetra Tech $25 Million Water Quality and Ecological Monitoring Contract | Press release | Business Wire | +0.55% | +0.91% | |
| Tetra Tech Announces Planned Dates for Third Quarter 2026 Results and Conference Call | Press release | Business Wire | -0.51% | +1.31% | |
| Tetra Tech Selected for $15 Million Multiple-Award City of Los Angeles Environmental and Digital Automation Contract | Press release | Business Wire | +0.33% | -1.72% | |
| Tetra Tech Selected for $49 Million Multiple-Award U.S. Army Corps of Engineers Contract | Press release | Business Wire | +0.07% | -0.25% | |
| Tetra Tech Awarded Digital Systems Integration Contract for Wastewater Authority in California | Press release | Business Wire | +0.97% | +2.86% | |
| Tetra Tech Secures Positions on Scotland Excel Engineering and Technical Consultancy Framework | Press release | Business Wire | +1.00% | +1.32% | |
| Tetra Tech Selected as Lead Designer for Hydropower Dam Modernization Contract | Press release | Business Wire | +0.97% | +0.94% | |
| Form 10-Q TETRA TECH INC For: Mar 29 | SEC filing · Form 10-Q | SEC EDGAR | +0.60% | +0.00% | |
| Form 8-K TETRA TECH INC For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +0.91% | -3.69% | |
| Tetra Tech Reports Strong Second Quarter 2026 Results and Raises Fiscal Year 2026 Guidance | Press release | Business Wire | +0.91% | -3.69% | |
| Tetra Tech Selected for Netherlands Wastewater Treatment and Water Infrastructure Framework | Press release | Business Wire | -0.65% | -0.22% | |
| Tetra Tech Awarded £18 Million Water and Wastewater Contract in Northern Ireland | Press release | Business Wire | +0.13% | -0.13% | |
| Tetra Tech Announces Planned Dates for Second Quarter 2026 Results and Conference Call | Press release | Business Wire | -1.62% | -0.29% | |
| Form 8-K TETRA TECH INC For: Mar 26 | SEC filing · Form 8-K | SEC EDGAR | -0.23% | -1.78% | |
| Tetra Tech Appoints Eric W. Thornburg to its Board of Directors | Press release | Business Wire | +0.00% | -2.28% | |
| Port of Los Angeles Selects Tetra Tech for Environmental Services Master Services Agreement | Press release | Business Wire | +0.16% | +2.46% | |
| Tetra Tech Awarded $14 Million DLA Technology Task Order Contract | Press release | Business Wire | +1.07% | -0.03% | |
| Tetra Tech Joint Venture Awarded $99 Million U.S. Navy A-E Services Contract | Press release | Business Wire | +0.30% | -1.49% | |
| Form 8-K TETRA TECH INC For: Feb 19 | SEC filing · Form 8-K | SEC EDGAR | -1.35% | -7.25% | |
| Tetra Tech Selected for $100 Million Multiple-Award Environmental Services Contract | Press release | Business Wire | -0.65% | +0.92% | |
| Tetra Tech Selected for Netherlands Water Engineering Framework | Press release | Business Wire | -0.60% | -3.06% | |
| U.S. Army Corps of Engineers Selects Tetra Tech for $49 Million Multiple-Award A-E Design Contract | Press release | Business Wire | -0.42% | -11.78% | |
| United Utilities Selects Tetra Tech to Provide Water Management Technology Solution for Leakage Reduction Program | Press release | Business Wire | +1.53% | +3.69% | |
| Form 10-Q TETRA TECH INC For: Dec 28 | SEC filing · Form 10-Q | SEC EDGAR | -0.96% | -0.08% | |
| Form 8-K TETRA TECH INC For: Jan 28 | SEC filing · Form 8-K | SEC EDGAR | -2.29% | -3.27% | |
| Tetra Tech Reports Strong First Quarter 2026 Results and Raises Fiscal Year 2026 Guidance | Press release | Business Wire | -2.29% | -3.27% | |
| Tetra Tech Acquires Halvik Corp | Press release | Business Wire | +0.30% | +0.79% | |
| Tetra Tech to Advance Its Program Advisory Practice | Press release | Business Wire | -0.40% | +1.64% | |
| Form ARS TETRA TECH INC For: Sep 28 | SEC filing · Form ARS | SEC EDGAR | -0.37% | -1.24% | |
| Form DEF 14A TETRA TECH INC For: Feb 19 | SEC filing · Form DEF | SEC EDGAR | -0.37% | -1.24% | |
| Form DEFA14A TETRA TECH INC | SEC filing · Form DEFA14A | SEC EDGAR | -0.37% | -1.24% | |
| Tetra Tech Selected for Missile Defense Agency SHIELD Multiple-Award IDIQ | Press release | Business Wire | +3.10% | +4.94% | |
| Tetra Tech Announces Planned Dates for First Quarter 2026 Results and Conference Call | Press release | Business Wire | +3.10% | +4.94% | |
| Form 8-K TETRA TECH INC For: Jan 06 | SEC filing · Form 8-K | SEC EDGAR | +0.09% | -1.52% | |
| Tetra Tech to Appoint Roger Argus as Chief Executive Officer; Dan Batrack to Become Executive Chairman | Press release | Business Wire | +0.09% | -1.52% | |
| Form 8-K TETRA TECH INC For: Dec 22 | SEC filing · Form 8-K | SEC EDGAR | -0.46% | -0.26% | |
| Tetra Tech Appoints Jeff Feeler to its Board of Directors | Press release | Business Wire | -0.46% | -0.26% | |
| Tetra Tech Appoints M. Susan Hardwick to its Board of Directors | Press release | Business Wire | -0.46% | -0.26% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the TTEK section they belong to.
Where else TTEK is measured.
TTEK earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Barrick Mining Corporation Common Shares (B) | 316 | 0.00% | 49% |
| Carpenter Technology Corporation (CRS) | 316 | -0.06% | 44% |
| Global Payments Inc. (GPN) | 314 | -0.12% | 43% |
| Quad Graphics, Inc Class A (QUAD) | 314 | 0.00% | 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 Industrials 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 Tetra Tech, Inc.'s median reaction calculated?
Every labeled TTEK 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 315 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. 54% of TTEK'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 TTEK'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.