Historically, Trump's public feuds with business leaders have led to increased market volatility and negatively impacted the targeted companies' stock prices. In this case, Trump's criticism of Ken Griffin, the founder of Citadel, may lead to a decline in Citadel's stock price and potentially affect the broader financial sector. The fact that Griffin has been a vocal critic of Trump's trade and immigration policies suggests that this feud may escalate, leading to further market uncertainty. Additionally, the mention of a 'MAGA attack' at the Milken Institute shindig implies that Trump's supporters may be mobilizing against Griffin and Citadel, which could lead to increased regulatory scrutiny and reputational damage. Overall, this post suggests a bearish outlook for Citadel's stock and the financial sector as a whole.