Active traders and day traders have many stocks to choose from this Tuesday morning.  We are tracking news and moves in shares of AEterna Zentaris Inc. (NASDAQ: AEZS), SunOpta, Inc. (NASDAQ: STKL), and  Zion Oil & Gas (NASDAQ: ZN).

AEterna Zentaris Inc. (NASDAQ: AEZS) is up 8% premarket to $2.46, relative to a 52-week range of $0.93-$2.68. Shares have dropped nearly 12% in the past three days. AEZS was started at Outperform at Oppenheimer.

SunOpta, Inc. (NASDAQ: STKL) is up nearly 4% premarket to $7.84, relative to a 52-week range of $3.98-$8.83. Shares of STKL spiked yesterday before market open and and settled during the day.

Zion Oil & Gas (NASDAQ: ZN) has advanced more than 9% premarket to $6.85, relative to a 52-week range of $4.20-$7.87.