The stock market closed mildly lower in a slow day leading up to the Labor Day weekend, shaking off worries about Russian troops in Ukraine. In the stock market today, the Nasdaq finished down 0.3%, the S&P 500 fell 0.2% and the Dow Jones industrial average dropped 0.3%. Volume was lighter on both exchanges. Enterprise software database firm Splunk (SPLK) was up sharply after hours, after reporting better-than-expected earnings.