Analysis on the Movement of Sectoral Indices With special Reference To BSE

The Bombay Stock Exchange (BSE), Which Was Started In 1875, Is The Oldest Stock Exchange In Asia. It Is Still Very Important For The Growth Of India’s Economy And Finances. Sector-specific Indices Inside This Dialogue Provide Insightful Information On The Performance Of Several Sectors, Including Banking, Information Technology, Finance, Oil, Healthcare, And Consumer Products, And They Also Affect The Benchmark’s Movement. SENSEX. Ten Major Industry Indices Are Examined In This Research Across The 2015–2025 Period In Order To Find Trend Patterns And Assess Their Impact On The Sensex And Researching How Macroeconomic Events Affect Industry Trends. For Its Interpretation, The Study Makes Use Of Trend Analysis And Regression Analysis With Secondary Data. The Trend Analysis Reveals Cyclical Market Activity, With 2016–2017 And 2020–2021 Showing Strong Growth Phases, 2018–2019 Experiencing Drops, And A More Stable Yet Inconsistent Performance Between 2022 And 2025. During Unsure Times, Some Industries, Like IT And Healthcare, Showed Resilience And Quick Recovery, Whereas Others, Such As Automobile And Construction, Showed More Volatility And A Weaker Impact. The Regression Analysis Results Show That, With Finance, Excluding The Vehicle Industry, All The Chosen Sectorial Indices Strongly Influence The Sensex. While The Most Influential Are Banking And Consumer Products, The Construction And Healthcare Industries Show Somewhat Smaller Effects. Ultimately, The Results Confirm That, In View Of Their Relevance For Reflecting The Larger Economic Scene And For Driving Stock Market Volatility, Sectoral Indices Are Crucial Drivers. Investors Looking For Portfolio Diversification, Government Officials Monitoring Industry Growth, And Portfolio Managers Creating Risk-sensitive Investment Plans In India, A Developing Country.