Stock market volatility persists as losses deepen and bounce back amid economic concerns

U.S. stock futures traded near the flatline after Tuesday's sharp losses, with Dow Jones Industrial Average futures rising by 0.1% and futures linked to the S&P 500 and Nasdaq 100 inching up 0.1%. Costco shares fell 2.5% in after-hours trading despite beating analysts' expectations on earnings and revenue. The market experienced losses due to disappointing new home sales and consumer confidence data. The S&P 500 is down 5.2% in September, while the Dow is down 3.2% and the Nasdaq is down nearly 7%. The market is expected to remain volatile until earnings season begins in mid-October.