Tetra Tech (Nasdaq: TTEK) reported earnings on Jan. 31. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Dec. 30 (Q1), Tetra Tech missed estimates on revenues and met expectations on earnings per share.

Compared to the prior-year quarter, revenue grew slightly and GAAP earnings per share grew.

Margins expanded across the board.

Revenue details
 Tetra Tech reported revenue of $497.2 million. The 13 analysts polled by S&P Capital IQ expected revenue of $521.4 million on the same basis. GAAP reported sales were 1.0% higher than the prior-year quarter's $492.1 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $0.41. The 13 earnings estimates compiled by S&P Capital IQ averaged $0.41 per share. GAAP EPS of $0.41 for Q1 were 14% higher than the prior-year quarter's $0.36 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 17.7%, 50 basis points better than the prior-year quarter. Operating margin was 8.4%, 110 basis points better than the prior-year quarter. Net margin was 5.3%, 70 basis points better than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $525.7 million. On the bottom line, the average EPS estimate is $0.41.

Next year's average estimate for revenue is $2.22 billion. The average EPS estimate is $1.91.

Investor sentiment
 The stock has a five-star rating (out of five) at Motley Fool CAPS, with 398 members out of 409 rating the stock outperform, and 11 members rating it underperform. Among 98 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 96 give Tetra Tech a green thumbs-up, and two give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Tetra Tech is outperform, with an average price target of $32.10.

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