A retail individual investor is someone who seeks to invest in securities with a maximum value of Rs.1,00,000. This term is important in the world of finance as it refers to an individual's investment approach and risk tolerance. It is crucial for retail investors to understand the market and make informed decisions while managing their portfolio. As a knowledgeable professor, I urge my students to carefully analyze their options and diversify their investments to minimize risk. In doing so, they can maximize their returns and achieve financial success.