Stocks of the Day

Tetra Tech Inc (TTEK), Stock of the Day for Wednesday, November 11, 2026

TTEK traded 5.4x its normal volume. What we found

Change that day-7.48%
Close$37.61
Volume vs normal5.4×

Price over the weeks around Nov 11, 2026, with daily trading volume along the bottom. The marked day is the pick, at 5.4× its normal volume.

Tetra Tech trading volume jumps 5.4x as shares fall 7.48%

The pick

Tetra Tech (TTEK) had the biggest jump in trading volume compared with its usual level. Volume was 5.4x its 30-day average, and the stock fell 7.48%.

What happened

We couldn't find a clear reason for the move in company filings or news.

On November 11, 2026, Tetra Tech issued a press release titled "Tetra Tech Reports Strong Fourth Quarter and Fiscal Year 2026 Results". We have only a short summary of the release, which says it announced results for the fourth quarter and fiscal year ended September 27, 2026. The sources we have do not tie the release to the price drop. [press release] [Yahoo Finance]

What news reports said

  • Yahoo Finance reported that Tetra Tech posted a profit of $131.7 million in its fiscal fourth quarter [Yahoo Finance].

  • Seeking Alpha reported that fourth-quarter non-GAAP earnings per share were $0.49, which it said beat expectations by $0.02. It also reported revenue of $1.34B, which it said beat expectations by $190M [Seeking Alpha].

  • Yahoo Finance reported that the results covered the fourth quarter and fiscal year ended September 27, 2026 [Yahoo Finance].

  • Benzinga published an article on November 11 headlined "Rigetti Computing, Tetra Tech And 3 Stocks To Watch Heading Into Wednesday" [Benzinga].

None of these reports says it caused the stock's move.

The numbers

  • Previous close: $40.65

  • Close: $37.61

  • Change: -7.48%

  • Volume: 11,552,075

  • 30-day average volume: 2,135,685

  • Volume multiple: 5.4x

  • Behind the move: a company press release

  • TTEK's most unusual trading day in 21 months

  • Its sector (Industrials, XLI) moved +1.33% that day

Pro: TTEK has had 5 earlier days at 5x+ normal volume since 2016. Pro members see what it did over the next 5 and 20 trading days after each one. See Pro

More coverage

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Sent Nov 12, 2026 · More on Tetra Tech Inc (TTEK)