NISM Series X-A · Chapter 15: Portfolio Construction Process
L1 · FoundationFoundation — Asset allocation, correlation, the five-step process, the IPS, objectives and constraints
Why the asset allocation decision comes first, how correlation behaves within and across asset classes, the five steps of portfolio management, the Investment Policy Statement and its four purposes, the three investment objectives and the liquidity, regulatory and tax constraints.
24 min read · Worth 4% of the paper · Written from pages 251–265 of the official NISM workbook · Updated 11 September 2026
15.1 Asset allocation — the decision that matters most
And the companion definition:
Examples of asset classes are bonds, equities, cash and cash-like securities. A broad asset class can be cut finer into sub-asset classes. "Bonds" divides into Treasury bonds, corporate bonds and junk bonds. Equity divides further into large cap, mid cap and small cap.
Now the four claims the workbook makes about why this decision matters, all of which are examinable:
- Asset allocation is a very important investment decision.
- It is the starting point for the investor as they set out to achieve their goals.
- Professional investment experience has been suggesting that in the long run the asset-allocation decision majorly influences the performance of investment portfolios.
- The asset allocation decision is not an isolated decision; it is a component of the overall portfolio management process.
And the sentence that settles the great debate between allocation and stock-picking:
Note the wording carefully. It does not say product choice is irrelevant. It says it is relevant but contributes less. An option that says stock selection does not matter at all overstates the workbook.
Think of a thali. Deciding how much rice, how much dal, how much sabzi and how much sweet goes on the plate is the allocation decision. Whether the dal is toor or moong is the product choice. Both matter — but if you fill the whole plate with sweets, no amount of care about the variety of sweet will save the meal.
15.2 Correlation across asset classes and securities
A value of +1 indicates a perfect positive relationship and a value of −1 a perfect negative relationship between the two variables.
- A positive relationship means the two variables move together in the same direction, either in an upward trend or a downward trend.
- A negative relationship means the opposite.
- The value of the correlation coefficient indicates the strength of the relationship.
So the sign tells you direction, the magnitude tells you strength.
Now the rule that makes correlation useful for allocation:
This is why holding twelve banking stocks is not really diversification. All twelve are sensitive to the same interest rate cycle, the same credit cycle, the same regulatory announcements. They are one asset class wearing twelve name plates.
And then the warning, which is the most examinable line in 15.2:
The workbook adds a practical footnote: financial services data integrators like Bloomberg and Capital IQ provide information on correlation coefficients between various assets and securities; alternatively users can calculate correlation coefficients using simple Excel functions.
Why does the warning matter in practice? Because correlations tend to rise exactly when you need them to stay low. In an ordinary year, mid caps and large caps may correlate at 0.6. In a panic, everything gets sold at once and the correlation jumps towards 1. The diversification you thought you had bought evaporates on the day you need it. That is why the workbook refuses to let you rely on historical correlation alone.
15.3 Steps in the portfolio construction process
Four words to notice — integrated, logical, orderly, consistent.
The workbook then gives three elements and five steps. Learn both, because questions have been set on each.
The three elements: PLANNING, EXECUTION and EVALUATION.
The five steps:
- Development of a policy statement for the portfolio. It is a road map that identifies the investor's risk appetite and defines investment objectives, goals and investment constraints.
- Study of current financial conditions and forecast of future trends.
- Construction of the portfolio, after taking into consideration the policy statement and the investor's objectives, risk appetite and horizon. Because investor needs and financial market forecasts are dynamic, the portfolio requires continuous monitoring and rebalancing.
- Performance measurement and evaluation.
- Periodic review — once a portfolio is constructed it needs to be reviewed, whether it is consistent with the objectives and whether there is any significant change in the conditions of the investor or any particular fund.
And the closing summary line:
Note that the workbook uses the word feedback in that summary sentence while naming the third element evaluation. Both appear; do not let either wording throw you.
15.3.1 The Investment Policy Statement
Who writes it? Either investors or their investment advisers draft the IPS, specifying their investment objectives, goals, constraints, preferences and the risks they are willing to take.
All investment decisions are based on the IPS, considering the investor's goals and objectives, risk appetite and so on. And crucially: since investors' requirements change over a period of time, the IPS also needs to be updated and revised periodically. The IPS is a living document, not a form signed once at account opening.
Then a sentence that links this chapter back to 15.16:
15.3.2 Why the IPS matters
IPS is an important planning tool which helps investors understand their requirements and also helps portfolio managers in creating and maintaining optimum portfolios. Preparation of the IPS inculcates a disciplined system and process in managing investments. It reduces the possibility of making inappropriate decisions.
There are four important purposes the policy statement serves:
- It enables investors to have realistic return expectations from their investments.
- It enables the portfolio manager to make effective investment decisions in line with the objectives of the investor.
- It provides a framework for the portfolio manager's evaluation with respect to the investments.
- It protects the investor against the portfolio manager's inappropriate investment decisions or unethical behaviour.
Look at what that list does. Purpose 1 protects the investor from himself — from expecting 30 per cent a year. Purposes 2 and 3 discipline the manager. Purpose 4 protects the investor from the manager. A single document facing in three directions.
In summary, a well-defined policy portfolio goes a long way in serving the investor's interest. It enables construction of an optimal investment portfolio.
15.3.3 What goes into the IPS
Since the IPS is the most important document, it needs to be prepared with caution. The workbook places duties on both sides:
- The investor has to be upfront with the investment adviser or portfolio manager with regard to their financial situation, requirements and risk-bearing temperament.
- The adviser or manager preparing the IPS is also required to show utmost patience to obtain a deep understanding of the investor's profile.
The contents, in order:
- The goals of the investor along with their priorities
- The investment objectives along with the time horizon — and clarity on this front is essential because the portfolio manager can then frame strategies accordingly
- A clear mention of the risk/return profile of the investor
- The liquidity constraints
- Preferred asset classes, and even those asset classes that need to be AVOIDED
- A systematic review process, which will allow the investor to remain on track to achieve their goals
Section 15.7 adds more that the IPS may include: reporting requirements, portfolio rebalancing schedules, frequency of performance communication, investment strategy and styles.
15.4 Investment objectives
Investors may state their objectives in terms of desired return in an absolute or relative sense — "I want 12 per cent" is absolute; "I want to beat the Nifty by 2 per cent" is relative.
Two relationships must be kept in mind, and they run in opposite directions:
- Risk and return typically have a POSITIVE relationship. Higher the risk, higher the return.
- Liquidity has an INVERSE relationship with return. Relatively illiquid investments require a premium for being less liquid, that is, an ILLIQUIDITY RISK PREMIUM.
That second one catches candidates. More liquidity means lower return; less liquidity is compensated by a premium. It is why a listed bond yields less than an identical unlisted one.
Generally, investors invest for three things: PRESERVATION OF CAPITAL, REGULAR INCOME and CAPITAL APPRECIATION.
The investment objectives lead to an asset allocation decision:
| Objective | Where the allocation tilts |
|---|---|
| Capital appreciation | High return investments like equity, which carry higher risk than government securities or bank fixed deposits |
| Capital preservation | Safe bonds and debt securities |
| Regular income | Asset classes generating periodical income — dividend paying stocks, interest paying bonds and rent paying realty |
Memorise that third row with its three examples. It is a favourite one-mark question.
15.5 Investment constraints
The chapter then details three: liquidity, regulatory and tax.
15.5.1 Liquidity constraint
Different investors have different liquidity requirements. Younger people usually have lesser liquidity requirements than older people. Some may have health or medical concerns requiring liquid funds; others have college fees or a wedding in the family. Generally investors prefer liquid funds to meet day-to-day expenses, plus some liquidity to meet contingency requirements like sudden medical expenses.
Learn all three, and especially the third — candidates remember emergency cash and near-term goals but forget that opportunity itself is a reason to hold liquidity.
To meet such requirements, some portion of the portfolio should be in cash or cash-like securities. The adviser must make a detailed assessment, because the error runs both ways:
- Keeping too much money for liquidity may hit the overall portfolio return.
- Not maintaining sufficient liquidity will lead to inconvenience and selling of other investments untimely.
The liquidity constraints of the investor need to be clearly specified in the IPS.
15.5.2 Regulatory constraints
Generally individual investors do not have many regulatory constraints. But if there are any, they need to be followed. Regulations can also constrain the investment choices available to investors.
The workbook gives two examples.
First, the Liberalised Remittance Scheme (LRS). As per the Reserve Bank of India's notification, an Indian resident individual can only invest up to USD 250,000 overseas per year. Indian resident individual investors cannot make investments greater than the amount specified by the regulator.
The footnote adds detail worth knowing: under the LRS, all resident individuals, INCLUDING MINORS, are allowed to freely remit up to USD 2,50,000 per financial year (April to March) for any permissible current or capital account transaction or a combination of both. Resident individuals can also avail foreign exchange facility for the purposes mentioned in Para 1 of Schedule III of the FEM (CAT) Amendment Rules 2015, dated May 26, 2015, within the same limit. The Scheme was introduced on February 4, 2004, with a limit of USD 25,000, and has been revised in stages consistent with prevailing macro and micro economic conditions.
Two details there trip people up: the limit is per financial year, April to March, not per calendar year; and it covers minors too.
Second, insider trading. Another example is the sale or purchase of securities on the basis of information that is not publicly known. Usually, people who have access to such information are insiders of the company and they are prohibited from trading on the basis of insider information.
15.5.3 Tax constraint
Three separate points are made:
- Different investments and different kinds of income are taxed differently.
- Return in the form of income — interest, dividend and rents — versus return in the form of capital appreciation are taxed differently.
- The same form of return may attract different tax liability depending on the tax bracket the recipient belongs to.
Hence a thorough understanding of the tax laws applicable to the investor needs to be part of the IPS.
That third point is the subtle one. Two investors can hold the identical bond and keep different amounts of it, purely because they sit in different slabs. This is why a good adviser never recommends a product without knowing the client's tax bracket — the correct answer genuinely differs from person to person.
Think of it like this
The thali and the dal
How much of the plate goes to rice, dal, sabzi and sweet is the asset allocation decision. Whether the dal is toor or moong is the product choice. The workbook is careful: product choice is relevant, but contributes less than the overall allocation to the end result. It never says it is irrelevant — and an exam option that claims stock selection does not matter at all has overstated the book.
Twelve bank shares are one basket
A investor proudly holds twelve different banking stocks. But investments that are part of the same asset class are sensitive to the same major economic and investment factors, so their correlation is high. Twelve name plates, one exposure to the interest rate cycle. Real diversification needs assets from different classes, where correlation is expected to be low.
The umbrella that folds in the storm
You buy two assets because they historically moved apart. Then a panic hits and everything is sold at once; the correlation jumps towards +1 exactly when you needed it near zero. The workbook warns that correlations can and do change over time and in different economic situations, and that investors should not solely depend on past correlation metrics.
The road map before the road trip
You do not start driving from Ahmedabad to Kerala and then decide where you are going. The Investment Policy Statement is the road map — it identifies risk appetite and defines objectives, goals and constraints before any money moves. And because the destination can change, the IPS needs to be updated and revised periodically.
The document that faces three ways
The IPS protects the investor from himself (realistic return expectations), disciplines the manager (effective decisions in line with objectives, and a framework for evaluating him), and protects the investor from the manager (against inappropriate decisions or unethical behaviour). Four purposes, three directions, one document.
Rent versus a plot in the village
A rented shop pays every month; a plot of land in the village pays nothing until sold, and may take a year to sell. That is why liquidity has an inverse relationship with return — the plot must offer more, an illiquidity risk premium, to be worth holding. Meanwhile risk and return have a positive relationship. The two run in opposite directions, and candidates mix them up.
Three reasons the family keeps cash
A family keeps two to three months of spending for emergencies — more if the earning member's income is volatile. It keeps the daughter's admission fee, due in eight months, in something safe and liquid — a near term goal. And the father keeps a little spare so that when a good flat comes up cheap, he can act — investment flexibility. Candidates always remember the first two and forget the third.
The same bond, two different answers
Two neighbours are shown the identical bond. One is in the highest slab; one has almost no taxable income. The correct recommendation genuinely differs, because the same form of return may attract different tax liability depending on the tax bracket the recipient belongs to. That is why a thorough understanding of the tax laws applicable to the investor needs to be part of the IPS.
Key terms in this chapter
- Accumulation phase
- The early career phase where net worth is small relative to liabilities and investments are few and non-diversified, but the long horizon permits high-return, high-risk, capital gain oriented investments.
- Adventurer
- In the BB and K framework, the confident and impetuous investor in the upper-right quadrant who places one major bet, prefers concentrating bets and normally does not use investment advisers.
- Asset allocation
- The process of deciding how to distribute an investor's wealth into different asset classes for investment purposes. It is the starting point and majorly influences long-run portfolio performance.
- Asset class
- A collection of securities that have similar characteristics, attributes and risk/return relationships, such as bonds, equities and cash-like securities.
- Benchmark portfolio
- A portfolio matching the composition of the investor's portfolio, used to evaluate performance on an apple-with-apple basis. A wrong selection can lead to wrong investment decisions.
- Capital appreciation objective
- An investment objective met by high return investments like equity, which carry higher risk than government securities or bank fixed deposits.
- Capital market forecasts
- The second set of inputs to portfolio management, establishing the expected risk-return opportunities available to investors. Historical risk-return data provides a good starting point.
- Celebrity
- In the BB and K framework, the anxious and impetuous investor in the lower-right quadrant who chases hot topics, has no ideas of his own, uses advisers, and is the most difficult investor to deal with.
- Concentration risk
- The risk that exposure limits to specific sectors, entities and asset classes are designed to avoid, set after considering the investor's objective, risk appetite, liquidity needs, tax and regulatory constraints and time horizon.
- Consolidation phase
- The mid-to-late-career stage characterised by income exceeding expenses, where the horizon to retirement is still 15 or 20 years and investors begin balancing capital gains with lower-risk assets.
- Correlation
- A measure of the strength and direction of relationship between two variables, ranging from minus 1 to plus 1. It is the most relevant factor in reaping the benefits of risk diversification.
- Decumulation or spending phase
- The period when living expenses are met from accumulated assets rather than earned income, focusing on stability and income, while retaining some growth and inflation-hedge potential.
- Emergency cash reserve
- Liquidity usually measured at two to three months of spending, and more if the individual's source of income is at risk or volatile.
- Ethical investing
- Selecting investments based on moral or ethical principles as the primary filter. It is more personalised than sustainable investing and typically avoids sin areas such as gambling, alcohol, smoking and firearms.
- Gifting phase
- The final life cycle phase, when a person realises she has more assets than she will need for spending and invests to leave a legacy or support a charitable cause.
- Guardian
- In the BB and K framework, the anxious and careful investor in the lower-left quadrant who cautiously tries to preserve wealth and has no interest in volatility or excitement.
- Illiquidity risk premium
- The extra return demanded by relatively illiquid investments for being less liquid, reflecting the inverse relationship between liquidity and return.
- Income-expense statement
- A personal financial statement, prepared monthly, showing whether present income exceeds spending and by how much, which is the amount available periodically for investment.
- Individualist
- In the BB and K framework, the confident yet careful, methodical and analytical investor in the upper-left quadrant who does his own research, avoids extreme volatility and is often contrarian.
- Investment approach
- Under the SEBI PMS Regulations 2020, a broad outlay of the type of securities and permissible instruments to be invested in, including the type of instruments and proportion of exposure, which must be part of the agreement.
- Investment constraints
- Limitations on investors in taking exposure to certain investment opportunities, relating to liquidity needs, time horizon and other unique needs and preferences.
- Investment flexibility
- The third category of liquidity need, being the ability to take advantage of market opportunities as asset classes become overvalued and undervalued.
- Investment Policy Statement
- The key step in portfolio management and the road map guiding the investment process, specifying objectives, goals, constraints, preferences and risks the investor is willing to take. It must be updated periodically.
- Liberalised Remittance Scheme
- An RBI scheme under which all resident individuals, including minors, may freely remit up to USD 250,000 per financial year. It was introduced on 4 February 2004 with a limit of USD 25,000.
- Low priority goal
- A goal that is not particularly painful if unachieved, such as a farm house or a luxury car, for which more aggressive investment approaches are usually taken.
- Near-term high priority goal
- A goal with high emotional priority due within a few years, for which investment vehicles tend to be cash equivalents or fixed income instruments with maturity dates matching the goal date.
- Portfolio management process
- A set of integrated activities undertaken in a logical, orderly and consistent manner to create and maintain an optimum portfolio, moving from planning through execution to feedback.
- Preservation of capital
- An investment objective under which the asset allocation is tilted towards safe bonds and debt securities.
- Psychographic analysis
- Analysis that bridges the gap between standard finance, which treats investors as rational, and behavioural finance, which views them as normal human beings with biases and cognitive errors.
- Rebalancing
- Restoring a portfolio to its target allocation after price changes or after changes in the investor's goals and risk tolerance. The IPS should specify how often and how much.
- Rebalancing costs
- The two types are transaction cost, being time and money costs such as research and brokerage, and tax cost from selling appreciated assets. Opportunity cost may also arise.
- Regular income objective
- An investment objective met by asset classes generating periodical income such as dividend paying stocks, interest paying bonds and rent paying realty.
- Statement of net worth
- A personal balance sheet recording all assets at estimated market value less all liabilities. It is suggested that net worth be calculated at least once a year.
- Straight-arrow investor
- In the BB and K framework, the well-balanced investor near the centre who cannot be placed in any quadrant, being a composite of the other four types and willing to bear medium risk.
- Strategic Asset Allocation
- The long-term target policy portfolio made after considering the investor's characteristics, essentially the translation of an Investment Policy Statement into asset weights. It involves time in the market.
- Sub-asset class
- A division within a broad asset class, such as Treasury bonds, corporate bonds and junk bonds within bonds, or large cap, mid cap and small cap within equity.
- Sustainable investing
- Investing that considers environmental, social and governance criteria while selecting investments, aiming to generate financial returns while ensuring a positive impact on society.
- Tactical Asset Allocation
- The short-term, dynamic asset allocation decision taken within the broad framework of SAA, temporarily shifting between asset classes to exploit market discrepancies. It involves timing the markets and attempts to beat them.
Check you have understood it
The L1 test for this chapter has 8 questions. Score 60% to unlock L2 Application (worked numericals and scenarios) and then L3 Exam-Ready (NISM-style traps, timed, with this paper's real marking). Tests, the higher levels and full mock exams need a free account so we can track your progress.
Create a free accountOriginal explanatory writing based on the official NISM workbook for Series X-A, which is published and copyrighted by NISM. Check figures against the current edition at nism.ac.in.