Interesting piece in the FT, drawing on research from DHR International suggesting that the CEO of a CAC 40 company (the largest firms in France) is likely to stay in position for twice as long as her equivalent in a DAX 30 company (Germany).  Globally, tenure is shrinking - the average length was 5 years in 2016.

In addition to activism, the report suggests that German CEOs often stay for shorter periods as a result of a stricter succession planning.

The sample sizes are small, but an interesting read nevertheless.