Markets gave up ground to start the new month.Often, stock markets perform well to start a new month, as automated monthly investments from 401(k) plans and individual investors provide some buying pressure. However, December didn't get off to a good start on Wall Street. The Nasdaq Composite (^IXIC 0.38%), Dow Jones Industrial Average (^DJI 0.90%), and S&P 500 (^GSPC 0.53%) were all down on the day, although they all recovered from much larger gains early in the trading session.IndexDaily Percentage Change ...

Core Insights - CEO turnover is increasing and has become a significant characteristic of modern corporate life, exemplified by Walmart CEO Doug McMillon's recent retirement after over a decade [1] Group 1: Reasons for CEO Churn - Aging of the old guard into retirement is contributing to the increase in CEO turnover [2] - Investor activism is leading to more resignations and firings among CEOs [2] - "Disruption fatigue" is affecting corporate operations, exacerbated by the pandemic, geographical dispersion of teams, and a volatile political landscape [2] Group 2: Corporate Board Responses - Corporate boards are focusing on maximizing stability and enhancing succession planning amid uncertainty [3] - There is a growing recognition among boards of the need for proactive CEO succession planning [3] Group 3: Data on CEO Departures - In Q3 2025, 174 global CEOs stepped down, with 50 departures from the S&P 500, an increase from 45 in the previous quarter [4] - The internal succession rate among S&P 500 companies has dropped to 69%, a decrease of 10 percentage points from the previous year [4] Group 4: Trends in CEO Appointments - 88% of incoming CEOs globally are first-timers, while S&P 500 companies tend to appoint more experienced CEOs [5] - Boards are increasingly involved in succession planning due to past failures, leading to a shift from periodic to continuous succession planning practices [5] Group 5: Consequences of Poor Succession Planning - A poor succession plan can lead to significant damage across corporate culture, finances, and strategy, turning a necessary transition into a crisis [6]