I don't there is any real 'savvy' at those elite levels, only quiet words in the ear between friends. You scratch my back and I'll scratch yours. An example: Peter Hargreaves (of Hargreaves Lansdown fame) sold off £550m worth of shares in his own company before the Coronavirus crashed everything. It was the biggest sale by a single private investor in the UK of all time. He put the wheels in motion on that one in December, Corona hit on December 31st - just a coincidence of course.