Top 10 Nasdaq-traded stocks posting largest volume increases

Markets Associated Press

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

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Akebia Therapeutics : Approximately 2,047,200 shares changed hands, a 1,707.1 percent increase over its 65-day average volume. The shares fell $5.75 or 29.2 percent to $13.97.

Ambassadors Group : Approximately 99,500 shares changed hands, a 1,274.2 percent increase over its 65-day average volume. The shares rose $.10 or 2.9 percent to $3.50.

Amedica Corp. : Approximately 860,500 shares changed hands, a 1,378.4 percent increase over its 65-day average volume. The shares fell $.28 or 10.8 percent to $2.32.

Chembio Diagnostics Inc. : Approximately 2,101,200 shares changed hands, a 4,259.0 percent increase over its 65-day average volume. The shares rose $.74 or 18.5 percent to $4.73.

Durect Corp. : Approximately 3,157,700 shares changed hands, a 1,341.0 percent increase over its 65-day average volume. The shares fell $.63 or 45.3 percent to $.76.

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Hemisphere Media : Approximately 139,100 shares changed hands, a 630.7 percent increase over its 65-day average volume. The shares rose $.24 or 2.1 percent to $11.45.

Layne Christensen Co. : Approximately 2,368,500 shares changed hands, a 736.0 percent increase over its 65-day average volume. The shares rose $.93 or 14.7 percent to $7.24.

Pain Therapeutics Inc. : Approximately 6,521,900 shares changed hands, a 3,568.5 percent increase over its 65-day average volume. The shares fell $2.20 or 53.0 percent to $1.95.

Prosensa Hldg NV : Approximately 1,857,200 shares changed hands, a 1,219.4 percent increase over its 65-day average volume. The shares rose $.55 or 4.6 percent to $12.56.

Regulus Therapeutics Inc. : Approximately 8,872,500 shares changed hands, a 1,231.0 percent increase over its 65-day average volume. The shares rose $1.14 or 6.6 percent to $18.47.