The document summarizes key aspects of perfect competition and provides a case study on the Indian stock exchange. It discusses how the stock exchange historically resembled a perfectly competitive market with many buyers and sellers trading identical products. However, over time the exchange transitioned from open outcry trading to screen-based trading to increase efficiency. Several scams in the 1990s and early 2000s exposed regulatory loopholes, leading to reforms like the establishment of SEBI to protect investors and increase transparency.