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Northern Dynasty Minerals Ltd (NYSEMKT:NAK) (The Motley Fool)
What happened: Shares of Northern Dynasty Minerals (NYSEMKT:NAK) dropped as much as 26.8% Monday after a surprise decision from the U.S. Environmental Protection Agency was handed down late Friday afternoon. The regulatory agency said in a statement that Alaska’s Bristol Bay sockeye salmon fisheries — the largest in the world — deserve protection and that any mining projects developed in the region may pose “unacceptable risk.” The decision is catching everyone off guard

Lockheed Martin Corporation (NYSE:LMT) (CNBC)
Lockheed Martin – The defense contractor earned an adjusted $4.30 per share for the fourth quarter, beating estimates by 23 cents a share. Revenue easily exceeded forecasts. Lockheed took a $1.9 billion one-time charge related to the new tax law.

KapStone Paper and Packaging Corp. (NYSE:KS) (Benzinga)
KapStone Paper and Packaging Corp. (NYSE:KS) shares surged 30.1 percent to $34.51 after the company agreed to be acquired by WestRock Co (NYSE:WRK) for $35 per share in cash.

Advanced Micro Devices, Inc. (NASDAQ:AMD) (MarketWatch)
Shares of Advanced Micro Devices Inc. AMD, +2.74% rose more than 3% in early trading Monday after MKM Partners analyst Ruben Roy came out incrementally more upbeat on the company’s immediate prospects. Though he still has a neutral rating on shares, Roy thinks that AMD looks positioned to deliver better-than-expected results for its December quarter as well as a stronger-than-anticipated forecast for its March quarter. The company reports earnings Tuesday. Roy cites “recent positive data points around the PC, server, and cryptocurrency mining markets” as reasons for his optimism, and he believes that most of the “upside delta” will come from the crypto side of the business.