Buffett's COP reduction does not necessarily mean he thinks the company is bad. He sold because he believes he can achieve a better return elsewhere. And XOM has done very well since he bought it, much better than COP. I don't think he's fretting.
This turd, COP, can't hold onto a measly 20 cent gain and is down, AGAIN, today. It's unable to yield anything but mediocrity. It has nothing to do with WB moving over to XOM, which, along with CVX, BP, Total and others are up today. Good news, it drops, bad news, it drops no news, it drops.
What a dissappointment.