NISM Series XV Research Analyst: Chapter XI Part 1 - Fundamentals of Investment Returns

This is Part 1 of the comprehensive study notes for Chapter XI: Fundamentals of Risk and Return for the NISM Series XV Research Analyst Certification Examination.

1. Introduction to Investing and Investor Expectations

What is Investing?

In the context of the securities market, investing involves the upfront commitment of a sum of money to earn returns on it over a period of time. A professional investment process is never a gamble; it requires a thorough and detailed analysis of the underlying security's safety, risk, income potential, and growth prospects.

The Two Core Expectations of an Investor

When an investor commits capital to an identified investment product, they expect two distinct outcomes:

1. To earn a return on the committed capital.
2. To get back the original capital invested (which is the more critical expectation of the two).

These two expectations form the foundation of the concepts of Return of Investment (capital preservation) and Return on Investment (yield or profit).

2. Return of Investment vs. Return on Investment (ROI)

Return of Investment

This represents the preservation and eventual recovery of the initial principal capital committed by the investor. Ensuring the safety of the principal is the primary duty of fundamental research before recommending any security.

Return on Investment (ROI)

This is the comparison of the returns generated by the asset against the initial capital invested. For a single holding period, it measures the efficiency of the capital allocation.

The Return on Investment (ROI) Formula

To comply with standard computational formats, the single-period ROI is written as a simple linear equation:

Return On Investment = (Net Profit / Investment) * 100

• Net Profit: The net gains (income plus capital gains) generated by the investment.
• Investment: The initial sum of money/capital committed upfront.

3. Types of Investment Returns

Different financial instruments and investment horizons require different methods of calculating returns. Chapter XI highlights four primary return metrics:

A. Simple Return

• Definition: Simple Return is also referred to as the single period return or the absolute return.
• Key Characteristic: It measures the raw percentage growth of an investment from the starting point to the ending point.
• Critical Limitation: The fundamental drawback of the Simple Return calculation is that it does not take the period over which the return was earned into consideration.
  • Example: A 50% absolute return sounds highly lucrative, but its value is completely different if it was earned over 1 year versus over 10 years. Simple Return treats both scenarios identically.

B. Annualized Return

• Definition: Annualized Return standardizes the return of an investment by expressing it as a yearly rate, allowing investors to compare different assets held over different timeframes.
• Critical Limitation: The main limitation of the annualized return calculation is that it does not take the time value of money into consideration.

C. Compounded Annual Growth Rate (CAGR)

• Definition: CAGR is the rate of return at which the original investment value grows to the final investment value over a specific period, assuming compounding.
• The Reinvestment Assumption: CAGR calculations operate on the core assumption that the periodic returns received from an investment can be re-invested to earn further returns. These reinvested earnings form an integral part of the total accumulated returns of the investment.
• Application: It is the standard metric used to describe the smoothed annual growth rate of an investment over multiple years.

D. Extended Internal Rate of Return (XIRR)

• Definition: When an investment does not consist of a single upfront payment and a single payout, but rather involves multiple cash inflows and outflows at irregular intervals, CAGR must be adjusted. This underlying CAGR for multiple cash flows is calculated using the XIRR method.
• Application in Excel: XIRR is calculated by using the built-in XIRR function in spreadsheet software (such as MS Excel).
• The Excel Procedure:
  1. Separate columns must be created in the spreadsheet.
  2. Input the exact dates of the transactions in one column.
  3. Input the corresponding matching cash flows (negative values representing outflows/investments, and positive values representing inflows/returns) in the adjacent column.

4. Comparison Table: Return Metrics at a Glance

The following table summarizes the different return metrics, their core characteristics, and their primary limitations as defined in the study material:

5. Important Terminology & Concepts for the Exam

Time Value of Money (TVM)

• Concept: Time Value of Money is the financial principle that money has the ability to be invested to earn more money over time.
• Implication: Because of this earning capacity, money received earlier is worth more than the exact same amount of money received later. This concept is crucial when comparing the present value of cash flows against future payouts.

Reinvestment Risk (Brief Linkage)

• The assumption of CAGR—that all periodic cash flows can be reinvested at the same rate of return—introduces a practical risk. If market interest rates or asset yields drop, the investor may not be able to reinvest their periodic returns at the original high rate, impacting the final compounded return.