STOCKS TO WATCH: Advanced Fibre, Copper Mountain, Go2Net, Lattice Semi and Novellus

Advanced Fibre shares should gain ground Tuesday after it topped analysts' estimates in its second quarter, earning $10 million, or 12 cents a share, on record sales of $101.2 million.

First Call Corp. consensus pegged the broadband communications equipment maker for a profit of 10 cents a share in the quarter.

Its shares closed off 1 1/2 to 57 1/4 ahead of the earnings report.

The $101.2 million in sales marks a 45 percent jump from the year-ago quarter when it earned $3.5 million, or 4 cents a share, on sales of $69.8 million.

Copper Mountain will be interesting to watch as it did top analysts' estimates in its second quarter but watched its stock pull back in after-hours trading.

In the quarter, it made $14.2 million, or 24 cents a share, on sales of $80.2 million.

First Call Corp. consensus expected it to earn 23 cents a share in the quarter.

Ahead of the earnings report, its shares closed up 8 7/16 to a 52-week high of 123 11/16 but fell to 108 in after-hours trading.

In the year-ago quarter, Copper Mountain earned $2.3 million, or 5 cents a share, on sales of $22.9 million.

First Call Corp. consensus expects it to earn 92 cents a share in the fiscal year.

Go2Net shares should move higher Tuesday after it easily hurdled estimates in its third quarter.

The Web portal operator posted a profit of $10.1 million, or 22 cents a share, on sales of $23 million.

Analysts were looking for a profit of 15 cents a share in the quarter.

The $23 million in sales represents a 23 percent jump from the second quarter. Gross profit margins rose to 84.2 percent, compared to 79 percent a year earlier.

Its shares moved up to 60 in after-hours trading after closing up 4 1/4 to 58 ahead of the earnings report.

Lattice should move higher after it also topped Street estimates in its second quarter, earning $33.6 million, or 61 cents a share, on sales of $140 million.

Analysts were predicting a profit of 55 cents a share in the quarter.

Lattice shares closed up 2 15/16 to 78 9/16 ahead of the earnings report.

The $140 million in sales marks a 134 percent jump from the year-ago quarter when it earned $12.8 million, or 26 cents a share, on sales of $59.7 million.

"Strong demand for customers in the communication end market resulted in double-digit sequential revenue growth," said CEO Cyrus Tsui in a prepared release.

Novellus kept the ball rolling in its second quarter, pocketing $75.7 million, or 56 cents a share, on sales of $326 million.

First Call Corp. consensus expected it to earn 52 cents a share in the quarter.

Ahead of the earnings report, its shares closed up 4 3/16 to 68 7/16.

The $326 million in sales represents a 149 percent improvement from the year-ago quarter when it earned $12.4 million, or 10 cents a share, on sales of $131 million.

Its shares raced up to a 52-week high of 70 1/4 in March after falling to a low of 17 1/4 in August.