Tellabs (Nasdaq: TLAB) reported earnings on Feb. 1. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended Dec. 28 (Q4), Tellabs missed estimates on revenues and exceeded expectations on earnings per share.

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

Margins contracted across the board.

Revenue details
Tellabs tallied revenue of $242.2 million. The nine analysts polled by S&P Capital IQ expected to see a top line of $251.2 million on the same basis. GAAP reported sales were 24% lower than the prior-year quarter's $316.8 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 $0.01. The seven earnings estimates compiled by S&P Capital IQ anticipated $0.00 per share. GAAP EPS were -$0.06 for Q4 against -$0.02 per share for the prior-year quarter.

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 38.6%, 390 basis points worse than the prior-year quarter. Operating margin was -4.3%, 320 basis points worse than the prior-year quarter. Net margin was -9.6%, 810 basis points worse than the prior-year quarter.

Looking ahead
Next quarter's average estimate for revenue is $239.1 million. On the bottom line, the average EPS estimate is -$0.01.

Next year's average estimate for revenue is $1.02 billion. The average EPS estimate is $0.02.

Investor sentiment
The stock has a four-star rating (out of five) at Motley Fool CAPS, with 386 members out of 433 rating the stock outperform, and 47 members rating it underperform. Among 108 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 100 give Tellabs a green thumbs-up, and eight give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Tellabs is hold, with an average price target of $3.30.

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