On this episode of Stock Movers, we take a look at some of the week's biggest gainers and decliners:
- Moderna (MRNA) saw it shares surge over the week. On Tuesday, it closed up 17%, marking its best day since December 2022. At the week's close, Arbutus Biopharma got one of its patent revoked by the European Patent Office, which is likely to affect its case against Moderna. Pharmaceutical companies traded higher broadly through the week.
- Constellation Energy (CEG), as well as other independent power producers saw shares declined by the week's end after the Trump administration and several states laid out a plan intended to compel technology companies to effectively fund the construction of new power plants as a way to tame surging consumer utility bills while aiding the development of data centers. Shares of the largest independent power producers slid. Vistra Corp. declined as much at 9.5%, Talen Energy Corp. slipped as much as 11% and Constellation Energy Corp. dropped as much as 10%.
- Used-card retailer Carmax (KMX) and Carvana (CVNA) have seen a strong start to 2026 as investors buy the November dip, and tracking data shows unit sales trending higher year-over-year, according to Barclays analyst John Babcock.
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