Shares of Amcol International ( ACO) were among the NYSE's winners Friday, climbing 10% after the specialty minerals producer posted fourth-quarter earnings that topped Wall Street forecasts.

The company earned $8.6 million, or 28 cents a share, on sales of $134.6 million. Analysts polled by Thomson First Call expected earnings of 23 cents a share. During the year-earlier period, the company earned $6.3 million, or 20 cents a share, on sales of $113.2 million. "Overall, we had a very good fourth quarter -- revenue grew 19 percent on strong performances, especially from our environmental segment," the company said. Shares were trading up $2.04 to $23.46.

A.C. Moore ( ACMR - Get Report) rose 4% after the arts and crafts retailer said it expects to post 2005 earnings that are below expectations, but it projected 2006 financial results above forecasts. The company estimates 2005 earnings of 48 cents to 51 cents a share, below the 53 cents a share that analysts expected. In early January, the company said it had 2005 sales of $539.4 million.

For 2006, the company sees earnings, excluding stock-based compensation costs, of 79 cents to 84 cents a share. Analysts are projecting earnings of 74 cents a share. A.C. Moore predicts sales growth of 16% to 17%, which translates into sales of $625.7 million to $631.1 million. Wall Street sees sales of $622.5 million. The company's shares were up 47 cents to $13.67.

Shares of Schlumberger ( SLB - Get Report) rose 5% after the oil-field services company reported fourth-quarter results that beat expectations. The company earned $660.6 million, or $1.08 a share, on sales of $4.02 billion. Before credits and charges, the company earned $639.7 million, or $1.05 a share. Analysts expected earnings of 96 cents a share and sales of $3.88 billion. During the year-earlier period, the company posted earnings of $329.8 million, or 55 cents a share, on sales of $3.1 billion. Shares were trading up $6.13 to $121.

Fastenal ( FAST - Get Report) slumped 12% after the industrial and construction supplies company posted in-line fourth-quarter earnings but turned in sales that fell slightly below expectations. The company earned $39.2 million, or 26 cents a share, up from $33.3 million, or 22 cents a share, a year earlier. Sales rose to $384 million from $318.5 million. Analysts expected earnings of 26 cents a share on sales of $386.6 million. Shares were trading down $5.06 to $37.03.

Shares of A.O. Smith ( AOS - Get Report) rose 4% after the maker of electric motors posted better-than-expected fourth-quarter results. The company earned $16 million, or 52 cents a share, on sales of $434 million. Excluding items, the company earned $18.4 million, or 60 cents a share. Analysts expected earnings of 45 cents a share and sales of $426.2 million. A year earlier, A.O. Smith earned $4.4 million, or 15 cents a share, on sales of $409.4 million. Shares rose $1.49 to $41.28.

NYSE volume leaders included Motorola , down $1.52 to $22.83; General Electric ( GE), down 86 cents to $33.82; Lucent Technologies , up 3 cents to $2.61; Citigroup ( C - Get Report), down $1.45 to $46.49; Pfizer ( PFE), down 2 cents to $24.95; Ford ( F), down 22 cents to $8; Elan ( ELN), down 45 cents to $14.22; and Advanced Micro Devices ( AMD), down $1.55 to $35.58.

Nasdaq volume leaders included Intel ( INTC), down 17 cents to $22.23; Cisco Systems ( CSCO), down 49 cents to $18.53; Sirius Satellite Radio ( SIRI), up 5 cents to $6.40; AVI BioPharma up $1.95 to $7.84; JDSU ( JDSU), down 7 cents to $3.01; Microsoft ( MSFT), down 9 cents to $26.93; Yahoo! ( YHOO), up 9 cents to $34.42; Apple Computer ( AAPL), down 97 cents to $78.07; Oracle ( ORCL), down 9 cents to $12.43; Ivanhoe Energy ( IVAN), down 23 cents to $2.58; Sun Microsystems ( SUNW), down 9 cents to $4.61; and Applied Materials ( AMAT), down 43 cents to $19.56.