NEW YORK ( TheStreet) -- Several small-cap stocks were poised to move on above-average volume during Wednesday's session

Vonage ( VG) dropped by 19 cents, or 10.7%, to $1.59 in the premarket session after the company posted an adjusted third-quarter profit of three cents a share while revenue sank 2% from a year ago to $222 million as subscriber line totals shrank. The three-month average daily volume for Vonage is 13 million, according to Yahoo! Finance.

Thomas Property Group ( TPGI) jumped by 32 cents, or 14.8%, to $2.48 in the premarket session after the company said it has postponed its previously announced public offering of 22 million shares of common stock due to unfavorable market conditions. The three-month average daily volume for Thomas Property is 108,000, according to Yahoo! Finance.

Pacer International ( PACR) surged by 53 cents, or 19.6%, to $3.24 in the premarket session after the company late Tuesday posted a third-quarter profit of two cents a share and announced that it has entered into new arrangements with Union Pacific ( UNP). The three-month average daily volume for Pacer is 949,000, according to Yahoo! Finance.

American Capital ( ACAS) rose by 55 cents, or 20.3%, to $3.26 in the premarket session after the company late Tuesday said it swung to a third-quarter profit of 30 cents a share. The three-month average daily volume for American Capital is 6.2 million, according to Yahoo! Finance.

-- Written by Robert Holmes in New York.

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