Stock market today: Dow, S&P 500, Nasdaq futures waver as investors weigh Middle East tensions

US stock futures were mixed after three days of declines as investors took stock of tensions in the Middle East and earnings from tech companies like Broadcom (AVGO) and Snowflake (SNOW).Futures on the Dow Jones Industrial Average (YM=F) rose 0.2%, while those on the S&P 500 (ES=F) were little changed. Contracts for the Nasdaq-100 (NQ=F) edged below the flat line after stocks snapped their losing streak.Stocks regrouped as oil prices edged lower, though Brent (BZ=F) crude oil futures remained above $95 per barrel. On Wednesday, President Trump said the US carried out a "very heavy attack" against Iran but also stated that the attack wouldn't take "too long."While the reinflamed war in the Middle East has kept the spotlight on inflation, more attention is turning to the labor market, as a lineup of economic data releases sets the stage for Friday's jobs report. On Thursday morning, outplacement firm Challenger, Gray & Christmas reported a slower pace of layoff announcements in August in the latest sign of a “low hire, low fire” labor market. That data will be coupled with Bureau of Labor Statistics figures on how many Americans filed unemployment benefit applications last week.On the earnings front, Lululemon Athletica (LULU) and DocuSign (DOCU) are among the notable names reporting quarterly results after the bell. Broadcom (AVGO) stock slipped after the chipmaker’s earnings beat wasn’t enough to lift the shares.