ETMarkets has identified 10 companies with an RSI above 75 that offer an interesting investment opportunity, with market capitalizations exceeding Rs 50,000 crore. The companies span sectors including digital payments and e-commerce, consumer goods, steel, FMCG, financial services, retail, defense electronics, banking, retail chains and aerospace and defense. The firms' solid returns and strong fundamentals make them attractive options for investors seeking exposure to growing sectors.