美国联邦政府停摆天数即将刷新纪录，牵动全球投资者神经

Core Points - The U.S. government is facing an unprecedented shutdown, potentially becoming the longest in history, which began on October 1 [1] - The shutdown is expected to have significant negative impacts on the U.S. economy, particularly in sectors like aviation, food, and healthcare, raising the risk of an economic hard landing [1] - The Congressional Budget Office estimates that the shutdown could reduce the U.S. GDP growth rate by 1-2 percentage points in Q4, with potential losses of $7 billion to $14 billion depending on the duration of the shutdown [2] - Consumer confidence is likely to be directly impacted, with delayed payments to federal employees and contractors exacerbating the situation, especially if the shutdown extends into the holiday season [2] - The shutdown poses a threat to U.S. sovereign credit ratings, with agencies like Scope Ratings downgrading the U.S. rating from "AA" to "AA-" due to deteriorating public finances and rising debt levels [3][4] - The shutdown has created a data vacuum, complicating economic assessments and policy decisions, which could lead to increased market volatility and uncertainty regarding future interest rate paths [5][6] - The liquidity tightening caused by the shutdown has led to a significant reduction in the Federal Reserve's reserve balances, further straining financial conditions and increasing borrowing costs [7]