Jim Sloan,

" Summary
Articles on Berkshire Hathaway's Q3 13F report talked most of the Alphabet purchase, a good story with good advice, but it missed the big headline.
The most important message in the 13F filing was what Buffett didn't do. He didn't change ongoing selling of his largest stock positions. There were no share buybacks either.
Like his great predecessor Bernard Baruch, Buffett "has made his money by selling too soon," being so far two years early almost exactly as Baruch was in 1929.
Older investors sometimes know many things that no longer apply, but their heads are full of remembered facts and mistakes they can avoid in the future.
Buffett remains eloquent and wise. It's a good idea to watch what he does and not dismiss his warnings."

seekingalpha.com - Berkshire hathaway buffett sticks to his guns dismiss his warning at your own peril