Citrix Systems (CTXS - News) "is firing on all cylinders," an FBR & Co. analyst said in a research note Thu. Citrix, which makes networking and virtualization technology, unveiled a cloud computing strategy at its analyst day Wed. Shares fell 4.3%, in sync with techs, after Cisco Systems (CSCO - News) said Wed. it sees slower tech spending.
Yahoo Inc's board has approved a deal to buy blogging and social networking site Tumblr for $1.1 billion in cash, …