Oracle Shares Down On News Of $28.3 Billion Cerner Acquisition Posted byKate Stalter December 21, 2021 Leave a comment on Oracle Shares Down On News Of $28.3 Billion Cerner Acquisition Shares of Oracle were trading 5% lower Monday, continuing a downtrend that began last week. On Monday, Oracle said it would buy medical software maker Cerner for $28.3 billion.