The statement is strongly supported by multiple, credible financial news sources. Evidence from Reuters, CNBC, and Yahoo Finance, all dated within the last day, explicitly states that the S&P 500 and Nasdaq were rising. These same sources confirm this occurred while investors were aware of and focused on the risk of a U.S. government shutdown, with one source noting the market was taking the prospect 'in stride'. Historical context provided by other sources like CNN and Invesco corroborates that markets historically have had a minimal or mixed reaction to shutdowns, which explains the current market behavior. The contradictory evidence is either dated several months prior to the rest of the articles or features a headline that is inconsistent with the data presented in the article's body.