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Alexion, Calyxt, Arvinas: 5 Top Stock Gainers for Monday

Alexion Pharmaceuticals, Calyxt, Homology Medicines, Arvinas and SandRidge Energy are five top stock gainers for Monday.
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Stocks ended mixed Monday as investors weighed positive news about the rollout of the coronavirus vaccine in the U.S. with concerns about renewed lockdowns.

Here are some of the market's biggest gainers for Monday.

1. Calyxt | Percentage Increase 12%

Shares of Calyxt  (CLXT) - Get Calyxt, Inc. Report rose after the plant-based technology company said it had contracted to sell all 2020 grain production of its high oleic soybean to Archer Daniels Midland  (ADM) - Get Archer-Daniels-Midland Company Report. Sales began in the third quarter and will continue through late 2021.

2. Alexion Pharmaceuticals | Percentage Increase 29%

Alexion Pharmaceuticals  (ALXN) - Get Alexion Pharmaceuticals, Inc. Report shares surged after the rare disease specialist agreed to a $39 billion takeover by Britain's AstraZeneca  (AZN) - Get Astrazeneca PLC Sponsored ADR Report. AstraZeneca will pay around $175 a share for Alexion, through a combination of cash and shares. Alexion shareholders will own around 15% of AstraZeneca's outstanding shares when the deal closes in the third quarter of next year.

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3. Homology Medicines | Percentage Increase 17%

Homology Medicines  (FIXX) - Get Homology Medicines, Inc. Report rose after H.C. Wainwright analyst Patrick Trucchio took over coverage on the genetic medicines company and kept a buy rating on the shares with a $30 price target. Trucchio views Homology as a differentiated gene therapy and editing platform company.

4. Arvinas | Percentage Increase 95%

Arvinas  (ARVN) - Get Arvinas, Inc. Report climbed to a record high after the biotech reported promising test results for breast and prostate cancer treatments. Both have been well tolerated, the company said, neither has reached a maximum tolerated dose, and the Phase 1 dose escalation trials for both programs continue.

5. SandRidge Energy | Percentage Increase 11%

SandRidge Energy  (SD) - Get SandRidge Energy, Inc. Report rose after the company said it had entered into a definitive agreement for the sale of its North Park Basin assets. The consideration is $47 million in cash subject to customary post-closing adjustments.