1. AAPL Stock Fell After Buffett's Sell-Off: The article reports that Apple's stock price fell after Warren Buffett's Berkshire Hathaway announced it had reduced its stake in the tech giant. This sell-off by the renowned investor led to a drop in Apple's share price, as investors reacted to the news.

2. Berkshire Hathaway's Reduced Stake: The article explains that Berkshire Hathaway, one of Apple's largest shareholders, reduced its stake in the company during the second quarter of 2023. This move by Buffett's investment firm was seen as a significant development, as Berkshire Hathaway has been a long-term investor in Apple.

3. Potential Reasons for the Sell-Off: The article suggests that Berkshire Hathaway's decision to reduce its Apple stake could be due to a variety of factors, such as portfolio rebalancing, concerns about the company's future performance, or a strategic shift in the investment firm's approach. The article also notes that the sell-off has raised questions about the future of Apple's stock and the potential impact on the broader tech market.