There’s a Test for That.

Over the last couple of weeks, WPP’s stock has risen considerably. Its share price, which was down in the low-teens six months ago, is now in the mid-to-high twenties. Its market-cap, which had plummeted to about $3 billion from a high of about $16 billion has climbed to almost $6 billion. Much of that rebounding comes after WPP’s latest earnings report which financial people regard as…