Summary
Highlights
This video is the second chapter of the NISM Series 8 Equity Derivatives course, focusing on 'Understanding the Index.' Although it carries only 2% weight in the exam (two questions), understanding indices is crucial for equity derivative trading, as a significant portion of trading occurs in the index segment. This chapter also forms a foundational base for future chapters.
An index is defined as a 'basket of securities' that represents the movement of the stocks it contains. For example, the Nifty 50 represents the movement of its 50 constituent stocks. Indices are weighted based on different sectors and stocks, providing a picture of market performance. There are two main types: General Market Indices (representing overall market performance, like Sensex) and Sectoral Indices (representing specific sectors, like Bank Nifty or Auto Index).
The video discusses three primary methods for calculating indices. The first is Market Capitalization Weightage, which was historically used for indices like Sensex and Nifty. This method calculates a company's market capitalization by multiplying its total number of shares by its market price. The example explains how to derive total shares from capital and face value, and then calculate market capitalization by multiplying the market value per share by the total shares.
The second method is Free Float Market Capitalization, which is currently followed in India. Unlike simple market capitalization, this method only considers shares freely available for trading in the market (free float) and multiplies them by the market price. The example illustrates how total issued shares differ from the free-float shares available for trading, highlighting why this method provides a more accurate representation of market liquidity.
The third method is Price Weighted Index, followed by indices like the Dow Jones Industrial Average and Nikkei 225. In this method, the weight of a stock in the index is determined solely by its price; higher-priced stocks have a greater impact. Additionally, the Equal Weighted Index method gives equal weight to all stocks within the index, regardless of their market capitalization or price. The video emphasizes that India primarily uses the free-float method, while the US uses the price-weighted index.
An ideal index should reflect market behavior, be computed by an independent third party (like Standard & Poor), and be professionally maintained. The video then introduces 'Impact Cost,' which measures the cost incurred when executing a large order that moves the market price away from the ideal mid-price (average of bid and ask). An example demonstrates calculating impact cost by comparing the actual average price paid for a larger quantity to the ideal mid-price, and then converting this difference into a percentage.
The video lists popular Indian indices, including various indices from BSE (Sensex, Sensex Next 50, S&P BSE 100, 200, 500) and NSE (Nifty 50, Nifty Next 50, Nifty 100, 200, 500). It clarifies that while these indices are listed on exchanges, their calculations are performed by independent third parties to avoid bias. Index management involves regular revisions to keep them updated and reflective of current market conditions.
Indices are essential for several financial products. They serve as benchmarks for 'Index Funds,' which replicate an index's performance without directly buying underlying stocks. Investors can buy index funds (like Nifty Bees) to capture market movement. Indices also form the basis for 'Index Derivatives' (like futures and options), which are tradable contracts whose value depends on the underlying index. These derivatives are trading instruments, not for long-term investment, unlike exchange-traded funds (ETFs) which are open-ended mutual funds listed on exchanges, often mirroring specific indices.
The CNX Nifty is computed using the free-float market capitalization method, with its base period set to November 3, 1995. A significant change occurred on June 26, 2009, when Nifty's computation officially shifted to using the float-adjusted market capitalization method. Key dates for index derivatives in India include the launch of Nifty Futures on June 12, 2000, and Nifty Options on June 4, 2001.
The video concludes with a series of practice questions covering the definition of an index, types of weighted indices (price-weighted, market capitalization-weighted, free-float adjusted), methods of stock selection for indices, and the formula for calculating price-weighted and market capitalization-weighted indices. It also addresses the purpose of float-adjusted indices and the truth about historical performance, emphasizing that past performance does not guarantee future results. The instructor encourages viewers to like the video and subscribe to the channel for more content and practical training from ICFM Institute.