A round of deal making kicks off the week and tops Trending Tickers this Monday…

HP (HPQ) shares are 5% higher after the company announced its long-rumored split into two divisions. Printers and PCs will be spun-off in a tax-free share-based transaction. Current CEO Meg Whitman will serve as chair of the new company and will remain CEO of the new Hewlett-Packard which will be stripped down to a software and services company.

And in the medical device space, CareFusion (CFN) shares rocketed higher by almost 25% after the company announced it would be purchased by Becton Dickinson (BDX) for $58 a share. The medical devices and supplies company was rumored to be on the block for most of the year with shares 25% higher for the year prior to this announcement.

Finally H&R Block (HRB) shares are getting smacked around by more than 6%. The top tax preparation firm announced that it won't be able to close its proposed deal to sell its banking unit before next year's tax season. It's the second time H&R Block has run into regulatory issues in trying to spin off its bank. The company had to pull a proposed deal in 2013. CEO Bill Cobb says he's extremely disappointed but remains committed to getting out of banking as soon as humanly possible.

Those are your trending tickers today -- tell us what stocks you're watching on twitter using the #trending tickers.