15 Stocks Moving In Tuesday's Pre-Market Session

Gainers

• NewLink Genetics Corp NLNK shares rose 9.2 percent to $12.00 in pre-market trading after surging 9.79 percent on Friday.
• Ionis Pharmaceuticals Inc IONS rose 7.1 percent to $57.22 in pre-market trading after the company disclosed that the FDA has approved Spinraza to treat spinal muscular atrophy.
• Net 1 UEPS Technologies Inc UEPS shares rose 6.2 percent to $12.59 in pre-market trading after dropping 1.41 percent on Friday.
• Research Frontiers, Inc. REFR rose 6.1 percent to $2.10 in pre-market trading after gaining 6.45 percent on Friday.
• Boston Scientific Corporation BSX shares rose 5.4 percent to $22.99 in pre-market trading after gaining 0.65 percent on Friday.
• Golden Ocean Group Ltd GOGL shares rose 5.3 percent to $4.78 in pre-market trading after climbing 6.32 percent on Friday.
• Seadrill Ltd SDRL rose 5.3 percent to $3.57 in pre-market trading after slipping 0.88 percent on Friday.
• Conatus Pharmaceuticals Inc CNAT rose 5 percent to $4.65 in pre-market trading after surging 17.51 percent on Friday.
• Cempra Inc CEMP shares rose 4 percent to $6.44 in pre-market trading after gaining 5.08 percent on Friday.
• First Majestic Silver Corp AG shares rose 3.6 percent to $7.12 in pre-market trading after dropping 0.29 percent on Friday.

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Losers

• Amphastar Pharmaceuticals Inc AMPH fell 4.5 percent to $19.52 in pre-market trading. Amphastar Pharmaceuticals disclosed that it has received a Complete Response Letter from the FDA indicating that the company should conduct Human Factor validation study and make label changes.
• AudioCodes Ltd. AUDC fell 2.1 percent to $6.24 in pre-market trading after rising 0.16 percent on Friday.
• LivePerson, Inc. LPSN shares fell 2.1 percent to $7.30 in pre-market trading after declining 1.32 percent on Friday.
• Ritchie Bros. Auctioneers Inc (USA) RBA shares fell around 2 percent to $35.45 in pre-market trading. Raymond James downgraded Ritchie Bros. Auctioneers from Outperform to Market Perform.
• NRG Energy Inc NRG shares fell 2 percent to $12.10 in pre-market trading after gaining 1.73 percent on Friday.