Shares of ATMI ( ATMI) were among technology's losers Wednesday, falling 13% after the supplier of semiconductor materials posted third-quarter results that missed Wall Street expectations.

The company earned $8.3 million, or 22 cents a share, on sales of $69.7 million. Analysts polled by Thomson First Call were expecting earnings of 25 cents a share on sales of $73 million. A year ago, the company posted income from continuing operations of $6.4 million, or 20 cents a share, on sales of $64.4 million. ATMI called its most recent quarter's sales "somewhat disappointing." The company said its cleans material business didn't ramp up as anticipated.

Looking ahead, ATMI forecast fourth-quarter earnings of 22 cents to 27 cents a share on sales of $73 million to $78 million. Analysts had been expecting higher earnings of 28 cents a share on sales of $76.5 million.

Finally, the company announced a $75 million share repurchase plan that will span the next 12 months. Shares were down $3.79 to $24.67.

Imation ( IMN) rose 4% after the company posted third-quarter results that topped forecasts. The data-storage products company earned $16.8 million, or 48 cents a share, on sales of $298.6 million. Analysts were expecting earnings of 36 cents a share on sales of $294.9 million. A year ago, Imation earned $9.6 million, or 24 cents a share, on sales of $259.3 million.

For the fourth quarter, Imation forecast earnings of 44 cents to 48 cents a share, in line with analysts' expectations, and sales of $315 million to $330 million, also in line with forecasts. Shares were trading up $1.85 to $43.20.

Shares of EMC ( EMC) rose 2% after the data-storage products company turned in third-quarter earnings that topped Wall Street's forecast by a penny a share. The company reported earnings of $421.7 million, or 17 cents share, on sales of $2.37 billion. Excluding items, the company would have earned $316 million, or 13 cents a share. Analysts were expecting earnings of 12 cents a share, before items, and sales of $2.37 billion. A year earlier, the company earned $218 million, or 9 cents a share, on sales of $2.03 billion.

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