Top 10 Nasdaq-traded stocks posting largest volume increases

Economic Indicators Associated Press

A look at the 10 biggest volume gainers on Nasdaq at the close of trading:

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Air T Inc. : Approximately 328,300 shares changed hands, a 2,029.0 percent increase over its 65-day average volume. The shares rose $3.61 or 15.6 percent to $26.77.

ChemoCentryx Inc. : Approximately 2,356,500 shares changed hands, a 1,004.1 percent increase over its 65-day average volume. The shares rose $1.11 or 19.8 percent to $6.71.

China HGS Real Estate Inc. : Approximately 1,828,000 shares changed hands, a 1,157.5 percent increase over its 65-day average volume. The shares rose $1.09 or 24.3 percent to $5.57.

Insignia Systems Inc. : Approximately 610,400 shares changed hands, a 1,308.0 percent increase over its 65-day average volume. The shares rose $.58 or 16.1 percent to $4.18.

LeMaitre Vascular : Approximately 451,100 shares changed hands, a 4,221.4 percent increase over its 65-day average volume. The shares fell $.20 or 2.7 percent to $7.20.

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Microfinancial Inc. : Approximately 764,400 shares changed hands, a 5,143.7 percent increase over its 65-day average volume. The shares rose $1.89 or 22.8 percent to $10.19.

PetSmart Inc. : Approximately 11,253,300 shares changed hands, a 1,124.0 percent increase over its 65-day average volume. The shares rose $3.30 or 4.2 percent to $80.97.

Riverbed Technology Inc. : Approximately 19,270,000 shares changed hands, a 1,290.3 percent increase over its 65-day average volume. The shares rose $1.57 or 8.4 percent to $20.31.

Sophiris Bio : Approximately 7,265,500 shares changed hands, a 18,901.8 percent increase over its 65-day average volume. The shares fell $2.30 or 81.5 percent to $.52.

Sorrento Therapeut : Approximately 1,830,700 shares changed hands, a 1,395.7 percent increase over its 65-day average volume. The shares rose $1.50 or 25.9 percent to $7.30.