Here are the market movers for June 21. Dollar Tree Inc (NASDAQ:DLTR) shares are up 5% after the discount retailer reiterated its second-quarter guidance and kept its full-year outlook.

The stock market is showing mixed performance midday. The S&P 500 lost 0.04% while the tech-heavy Nasdaq Composite added 0.11%. The Dow Jones Industrial Average lost 0.09%. The Russell 2000 Index ...