TradingKey – On October 19 Eastern Time, Warren Buffett’s Berkshire Hathaway (BRK.A)(BRK.B) continued its recent strong momentum. As of the close on October 16, Berkshire’s share price was only about 1.6% below its all-time high. Based on closing prices from October 2 to 16, its Class A shares rose about 5.8%, while the Nasdaq Composite Index fell about 3.9% over the same period.

In terms of stock price catalysts, market sentiment may be the main driving factor. Last week, AI chip and infrastructure-related stocks experienced a sell-off as investors worried about rising financing costs and whether massive investments could yield sufficient revenue. Meanwhile, Berkshire’s business spans multiple sectors, including insurance, energy,…