Is the stock market open on Presidents Day? Will the post office deliver mail? - MarketWatch

1. Presidents Day closes NYSE and Nasdaq markets on February 17. 2. S&P 500 is close to reaching a record high. 3. President Trump refrained from imposing immediate tariffs, boosting investor confidence. 4. Banks and federal offices are closed, impacting cash flow temporarily. 5. Retailers may see increased sales due to holiday promotions.