Jeremy Phillips's 247wallst.com article reports that while the market had its worst week since April 2025 — the S&P 500 fell 2.7%, dragged by a 4.4% selloff in AI stocks — Berkshire Hathaway's Class B shares rose 5.2% to a record high, with Warren Buffett now chairman and Greg Abel running the company ahead of Saturday's third-quarter results. According to CNBC the company held about $365.5 billion in cash at the end of June, and the article argues that same cash habit — keeping enough to cover a few years of spending — lets retirees like a 67-year-old with $900,000 ride out a 20% stock drop without selling low.