https://www.reuters.com/article/us-red-hat-m-a-ibm/red-hat-jumps-ibm-shares-dip-on-cloud-mega-merger-idUSKCN1N31IP >IBM Corp's $34 billion deal to buy Red Hat Inc drove shares in the small but fast-growing software maker 50 percent higher on Monday, reflecting the huge premium IBM is paying to ward off any potential challenger bids.