SynopsisWalmart is set to join the prestigious Nasdaq-100 Index. The retail giant will replace British drugmaker AstraZeneca. This move takes effect on January 20. Walmart is also joining the Nasdaq-100 Equal Weighted Index and the Nasdaq-100 Ex-Tech Sector Index. Companies often switch exchanges for better alignment with investor bases and services. The Nasdaq-100 is known for including top non-financial companies. ...