The study analyzes the trend and progress of ownership patterns of selected companies listed on the National Stock Exchange of India using a quantitative approach based on secondary data from annual reports and the CMIE Prowess IQ database. A sample of 482 companies from the NIFTY 500 is selected excluding 18 firms which are established after 2015 to maintain uniformity in data. The study follows purposive sampling method. The study covers the period from 2015 to 2025. Descriptive statistics, CAGR, and the Herfindahl–Hirschman Index (HHI) are used to examine the distribution, growth, and concentration of ownership. The findings reveals that there is a gradual decline in promoter ownership, particularly Indian promoters, indicating dilution of traditional control, while foreign promoter ownership shows a marginal increase. In contrast, non-promoter ownership has increased significantly, driven mainly by the growth of institutional investors such as mutual funds, FIIs, and insurance companies. Within non-institutional ownership, individual shareholding has increased, whereas corporate bodies have declined. The analysis of the Herfindahl–Hirschman Index indicates that promoter ownership exhibits moderate concentration, while non-promoter ownership remains widely dispersed, reflecting diversification of shareholding. Statistical measures further confirm that major ownership components are relatively stable, whereas smaller categories show high variability and minimal contribution.