The closing price of a stock crossing its 100-day Simple Moving Average (SMA) is significant in stock market analysis. When a stock's closing price rises above its 100 SMA, it often suggests potential upward momentum. On July 3, 2023, several stocks crossed their 100 SMA, including HFCL, V-Mart Retail, Indian Overseas Bank, Bank of India, Vaibhav Global, GAIL, Indiabulls Real Estate, and Polyplex Corporation.