25 Stocks Moving in Monday's Pre-Market Session

Gainers

• Alder BioPharmaceuticals, Inc. (NASDAQ:ALDR) rose 80.9% to $18.20 in pre-market trading after Danish company Lundbeck announced plans to acquire Alder BioPharmaceuticals in a deal valued at around $2 billion.
• SemGroup Corporation (NASDAQ:SEMG) rose 64% to $16.85 in pre-market trading after Energy Transfer announced plans to purchase SemGroup in a $5 billion deal.
• Yuma Energy, Inc. (NYSE:YUMA) shares rose 32.5% to $4.40 in pre-market trading after gaining 5.06% on Friday.
• Wins Finance Holdings Inc. (NASDAQ:WINS) rose 28.5% to $21.82 in pre-market trading.
• California Resources Corporation (NYSE:CRC) shares rose 24% to $14.65 in pre-market trading.
• W&T Offshore, Inc. (NYSE:WTI) rose 23.3% to $5.71 in pre-market trading.
• Centennial Resource Development, Inc. (NASDAQ:CDEV) rose 19.7% to $5.2799 in pre-market trading.
• Chesapeake Energy Corporation (NYSE:CHK) rose 17.7% to $2.09 in pre-market trading.
• Extraction Oil & Gas, Inc. (NASDAQ:XOG) rose 17.7% to $3.80 in pre-market trading.
• Whiting Petroleum Corporation (NYSE:WLL) rose 17.5% to $8.85 in pre-market trading.
• Unit Corporation (NYSE:UNT) shares rose 16.9% to $3.88 in pre-market trading.
• Nabors Industries Ltd. (NYSE:NBR) rose 16.1% to $2.67 in pre-market trading.
• Aimmune Therapeutics, Inc. (NASDAQ:AIMT) rose 15.1% to $28.39 in pre-market trading after the company disclosed that the FDA Allergenic Products Advisory Committee voted to support the use of Aimmune’s PALFORZIA™ for peanut allergy.
• Southwestern Energy Company (NYSE:SWN) rose 13% to $2.52 in pre-market trading.
• Continental Resources, Inc. (NYSE:CLR) rose 12.9% to $36.25 in pre-market trading.
• Cimarex Energy Co. (NYSE:XEC) rose 9.2% to $52.37 in pre-market trading.
• Pioneer Natural Resources Company (NYSE:PXD) rose 8.2% to $146.50 in pre-market trading.
• Northern Oil and Gas, Inc. (NYSE:NOG) rose 7.9% to $2.19 in pre-market trading.

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Check out these big penny stock gainers and losers

Losers

• New Relic, Inc. (NYSE:NEWR) shares fell 15.9% to $49.14 in pre-market trading after the company lowered its 2020 sales guidance and announced changes in management.
• Mallinckrodt plc (NYSE:MNK) shares fell 7.3% to $3.06 in pre-market trading after rising 10.37% on Friday.
• Construction Partners, Inc. (NASDAQ:ROAD) shares fell 5.4% to $14.88 in pre-market trading after reporting a 5 million share common stock offering.
• Francesca's Holdings Corporation (NASDAQ:FRAN) shares fell 5% to $17.23 in pre-market trading after gaining 28.47% on Friday.
• American Airlines Group Inc. (NASDAQ:AAL) fell 3.8% to $28.80 in pre-market trading.
• Overstock.com, Inc. (NASDAQ:OSTK) shares fell 3.5% to $24.05 in pre-market trading after dropping 6.70% on Friday.
• SmileDirectClub, Inc. (NASDAQ:SDC) shares fell 2.9% to $18.15 in pre-market trading after rising 12.06% on Friday.