“Late last year, the Berkshire Hathaway CEO was busy selling stocks when the S&P 500 logged more than 50 record closes, leading many market observers to scratch their heads”
Buy low, sell high.
What's Barrons angle ? Trying to diss Trump's Econ plans ? Selling when prices are at record highs is good investing, that's why. Things will likely fall back at some point and he'll buy again at a cheaper price.
This is no mystery and no story to be uncovered.