ADTRAN (Nasdaq: ADTN) reported earnings on Jan. 16. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Dec. 31 (Q4), ADTRAN met expectations on revenues and beat expectations on earnings per share.

Compared to the prior-year quarter, revenue dropped significantly and GAAP earnings per share contracted significantly.

Margins dropped across the board.

Revenue details
 ADTRAN recorded revenue of $139.8 million. The 14 analysts polled by S&P Capital IQ wanted to see a top line of $139.6 million on the same basis. GAAP reported sales were 20% lower than the prior-year quarter's $175.3 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 $0.11. The 11 earnings estimates compiled by S&P Capital IQ predicted $0.09 per share. GAAP EPS of $0.06 for Q4 were 88% lower than the prior-year quarter's $0.49 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 48.2%, 840 basis points worse than the prior-year quarter. Operating margin was 2.1%, 2,140 basis points worse than the prior-year quarter. Net margin was 2.8%, 1,500 basis points worse than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $140.6 million. On the bottom line, the average EPS estimate is $0.13.

Next year's average estimate for revenue is $619.0 million. The average EPS estimate is $0.87.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 161 members out of 187 rating the stock outperform, and 26 members rating it underperform. Among 54 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 43 give ADTRAN a green thumbs-up, and 11 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on ADTRAN is hold, with an average price target of $15.94.

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