Daniel Loeb

If “staying active” is the key to a long life, Carl Icahn will probably live for years. At 77, the US investor is on a concerted activist campaign. He has tried (unsuccessfully) to disrupt Michael Dell’s buyout of the computer maker he founded, dined with Apple’s chief executive and pressed him to return cash to shareholders, and last week planted board members – including his son Brett – at Nuance, the Boston technology company that gives Apple’s Siri his/her voice.

Emma Jacobs

As a red-faced, red-haired infant who was close to her hands-on stepfather, the metaphor invoked by activist investor Dan Loeb that Sony treats its entertainment business like a “red-headed stepchild” has no personal resonance.

But I get it. Leaving aside any gripes from the ginger brigade, his accusation that the company treats this part of the group with disdain is clear.

This comes just days after the forthright statement from Mark Cutifani, chief executive of Anglo-American, condemned the mining company’s performance as “constipated” and promised to “get our arses into gear and start making a difference”.