Stocks making the biggest moves midday: HP, Constellation Brands, CDK Global and more
A man passes a Hewlett Packard display at a technology conference Jim Young | Reuters Check out the companies making headlines in midday trading. HP — Warren Buffett’s Berkshire Hathaway became the largest shareholder in the computer hardware company, sending shares up 16.4%. Berkshire Hathaway bought nearly 121 million shares, or about an 11% stake…