The S&P 500 saw its lowest close in a month as few signs emerged of a deal to end the government shutdown and raise the nation’s borrowing limit. Market losses were broad. One of the reasons stocks haven’t fallen more is that some investors see the current stall as a blip rather than a change in the long-term trend. The Fed continues its unprecedented stimulus of the economy, a strategy that has helped support a four-year surge. Among stocks making big moves, Mattel slipped after a Goldman Sachs analyst cut his earnings estimates for the toy maker. Goldman is predicting a tough holiday season for toy makers, including rival Hasbro, as children favor video games.