Honeywell to split up into three companies

• It's also a long time coming for Honeywell, as activist Dan Loeb first called for the Charlotte-based company to spin off aerospace eight years ago.

Zoom in: Honeywell will split off its aerospace unit from its automation arm, while continuing with previously announced plans to spin off its advanced materials business.

The bottom line: This is by far Elliott's biggest success story when it comes to the size of the company, size of its stake, and ability to get management to do what it asked.