美股开盘，道指涨0.3%，标普500指数涨0.4%，纳指涨0.3%。Moderna(MRNA.US)暴涨90%，与默沙东宣布mRNA癌症疫苗三期试验成功，黑色素瘤治疗迎来历史性突破，默沙东(MRK.US)涨8.4%。迈威尔科技(MRVL.US)涨9.7%，公司向谷歌发行可购买至多5897万股股票的认股权证。SK海力士(SKHY.US)涨4.2%，拟回购注销40万亿韩元股份。
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