Market cap of 9 out of top 10 companies decreased by ₹4.74 lakh crore, RIL, HDFC Bank biggest losers | Market-cap of 9 out of top-10 companies decreased by ₹ 4.74 lakh crore: Reliance Industries was the top loser, its value decreased by ₹ 1.88 lakh crore to ₹ 18.76 lakh crore.

In last week's trading, the combined market capitalization of 9 out of the top 10 companies of the country has decreased by Rs 4.74 lakh crore. Among these, Reliance Industries has suffered the most loss last week. Its market cap has declined by ₹1.88 lakh crore to ₹18.76 lakh crore.

At the same time, the market cap of HDFC Bank has decreased by ₹ 72 thousand crores to 12.64 lakh crores. Bharti Airtel's market cap has declined by ₹ 53 thousand crores to ₹ 9.34 lakh crores.

Apart from this, the market value of ICICI Bank, LIC, HUL, ITC, TCS and SBI has also decreased. However, only the market value of Infosys has increased. Infosys' market cap has increased by ₹4,629 crore to ₹7.96 lakh crore.

Sensex fell by 4.53% last week In the entire last trading week, Sensex had gained 4.53% i.e. 3,883 points. Meanwhile, amid fears of war between Iran and Israel, on October 4, the last trading day of the week, the Sensex closed at 81,688 with a fall of 808 points (0.98%). Nifty also declined by 200 points (0.93%), it closed at the level of 25,049.

What is market capitalization? Market cap is the value of the total outstanding shares of any company, i.e. all those shares which are currently held by its shareholders. It is calculated by multiplying the total number of issued shares of the company by the stock price.

Market cap is used to categorize shares of companies to help investors select them according to their risk profile. Like large cap, mid cap and small cap companies.

Market Cap = (number of shares outstanding) x (price of shares)

How does market cap work? Whether a company's shares will yield profit or not is estimated by looking at many factors. One of these factors is market cap. Investors can find out how big a company is by looking at the market cap.

The higher the market cap of the company, the better the company is considered. Stock prices rise and fall according to demand and supply. Therefore, market cap is the publicly perceived value of that company.

How does market cap fluctuate? It is clear from the market cap formula that it is calculated by multiplying the total number of issued shares of the company by the stock price. That means if the share price increases then the market cap will also increase and if the share price decreases then the market cap will also decrease.