Berkshire Hathaway started a new position in NOV in the 2nd quarter and added to its position in the 3rd quarter. It will be interesting to see what Buffett does over the next year. He doesn't buy a company unless he plans on holding for the long term.
I am surprised you did not mention he liquidated all his holdings in Intel. Buffett does not trade. He buys with intent of holding forever. Forever meaning until there is a material change in the company or industry or if the company is overvalued by traders such as yourself.
Your misunderstanding of this shows your inexperience. Your poor choice of words using idiot shows your of poor character.