Donald Trump's pick of Robert F. Kennedy, Jr. to the Department of Health and Human Services ignited negative reaction in vaccine stocks like Pfizer (PFE) and Moderna (MRNA). Berkshire Hathaway (BRK/B) buys into Domino's Pizza (DPZ) and Pool Inc. (POOL) while selling 97% of its stake in Ulta Beauty (ULTA). Alibaba (BABA) traded higher pre-market before tumbling to the downside on its earnings report. Diane King Hall dives into the morning's top reports.