U.S. markets closed Monday slightly higher, with the Dow Jones Industrial Average edging up 0.04% to 42,330.15, while the S&P 500 gained a similar 0.04% to reach 5,762.48. The Nasdaq also rose by nearly 0.04%, closing at 18,189.17. These are the top stocks that gained the attention of retail traders and investors throughout the day: Apple Inc (NASDAQ:AAPL) shares ended Monday higher by 2.29% to end the day at $233. The company is preparing for potential disruptions due to a looming dockworkers’ strike on the East and Gulf Coasts. The strike could halt half of the goods entering and leaving the…