Investing

12 min read

What is an investment portfolio and how do you build one?

Learn what an investment portfolio is, which assets it can hold, what risks it carries and how to build an investment portfolio from scratch.

Oleksandr Yutysh

Author

· Co-founder of Strum

An investment portfolio is a collection of assets that an investor holds and manages according to their financial goals, investment horizon and acceptable level of risk. A portfolio can include stocks, bonds, funds, real estate or cash.

Below, we explain what makes up an investment portfolio, the main portfolio types, why diversification matters and how to build a portfolio step by step.

An investment portfolio in simple terms

A portfolio is a set of investments in which each has a role. Some assets support capital growth, others provide steady income, and others let you access money quickly when you need it.

For example, someone who invests some money in bonds, some in stocks and keeps some in more liquid instruments already has a portfolio of several assets.

A portfolio can belong to an individual or a company. The principle is the same: assets are chosen to meet the owner's specific needs.

Investment portfolio holdings and their allocation in Strum

What an investment portfolio is for

A portfolio serves a broader purpose than simply making more money. It connects money to specific financial goals: saving for a home in five years, building retirement capital or receiving regular dividend income.

Its second purpose is to manage the balance between risk and potential return. When capital is spread across different types of assets, a fall in one asset's price has less impact on the total portfolio value. A defined allocation also makes it easier to assess investment performance and notice when something moves away from the plan.

What an investment portfolio contains

An investment portfolio includes different asset classes. You do not need to hold all of them at once: the mix depends on your goals and circumstances.

AssetRole in the portfolioMain risk
Stockscapital growth, sometimes dividendslarge price swings, problems at an individual company
Bonds, including Ukrainian government bonds (OVDP)regular coupon income, stabilityissuer risk, interest rate changes, inflation
ETFs and investment fundsbroad diversification through one instrumentmarket risk, fund fees
Real estate or real estate fundsrental income, protection against inflationlow liquidity, property or manager risk
Cash and depositsliquidity, reserve for contributionsloss of purchasing power through inflation
Other assets, such as gold and cryptocurrencyprotection during crises, speculative potentialhigh volatility, valuation difficulties

Heatmap of investment portfolio assets in Strum

When assets are held at different brokers and banks, seeing the full picture is difficult without separate spreadsheets. Our investment tracker brings stocks, bonds, funds and cash together in one dashboard, while Ukrainian government bonds have a dedicated OVDP tracker.

What determines your investment portfolio allocation

There is no single correct portfolio for everyone. Two people with the same amount of money can have very different allocations, and both can make sense. The choice depends on goals, time horizon, attitude to risk, liquidity needs and financial circumstances.

Investment horizon

Your horizon is the time until you need the invested money. If you need it in a year or two, the portfolio has little time to recover after a market downturn. With a 15–20-year horizon, short-term fluctuations matter less, so a larger allocation to more volatile assets may be acceptable.

Investment goal

The goal shapes the portfolio. Capital preservation calls for stable instruments; maximum growth calls for assets with greater potential and risk; regular income calls for instruments that pay coupons, dividends or rent.

Risk tolerance

There are two separate questions here. First, are you psychologically prepared to see your portfolio fall by 20–30% without selling everything in a panic? Second, can you afford that financially?

For example, someone may be comfortable with market fluctuations but plan to use the money to buy an apartment next year. Their psychological risk tolerance is high, but their financial capacity to take risk is low. Use the lower of the two as your guide.

Liquidity

Liquidity describes how quickly an asset can be sold without a significant loss in value. Shares in large companies or ETFs can be sold in minutes; real estate can take weeks or months. If you might need money unexpectedly, your portfolio should hold enough liquid assets.

Main goals when building an investment portfolio

  • Capital preservation: protect money from inflation without large fluctuations.
  • Long-term growth: increase capital over ten years or more.
  • Regular income: receive dividends, coupons or rental payments.
  • Saving for a specific goal: a home, children's education or a car by a set date.
  • Combining several goals: for example, retirement capital alongside saving for a down payment.

Each goal needs its own allocation, so multiple goals are often managed in separate portfolios. You can record the amount, deadline and monthly contributions for each in the financial goals and planning section.

Financial goals and projected capital accumulation in Strum

What portfolio diversification is and why it matters

Diversification means allocating capital so that assets do not all depend on the same risk factors. Ten stocks in US technology companies are ten positions, but they largely share one risk: if the sector falls, the entire portfolio falls.

A diversified portfolio considers variety across asset classes, companies, sectors, countries and currencies. Problems at an individual company or in an industry then have less impact on the result. Diversification does not remove market risk: during major crises, almost all assets can lose value at the same time.

Diversification and asset allocation: what is the difference?

CriterionAsset allocationDiversification
Question it answershow much capital to put into each asset classhow to spread risk within and across asset classes
Main purposealign the portfolio with goals, horizon and riskreduce dependence on individual companies, sectors and markets
Where it appliesacross the whole portfoliowithin each asset class and between classes
Role in the portfolioestablishes the overall allocationprotects that allocation from concentrated risk

Types of investment portfolios

Portfolios can be classified by risk level, purpose and asset mix. For a beginner, the most useful starting point is the balance between risk and potential return. This gives three main portfolio types: conservative, balanced and aggressive.

Conservative investment portfolio

A conservative portfolio focuses on capital preservation and lower volatility. Bonds, deposits and other instruments with predictable income typically form its core, with a small allocation to stocks. Risk is lower, but not zero: inflation, issuer default and changes in interest rates still affect the result.

Balanced investment portfolio

A balanced portfolio combines assets for growth with assets for stability. Its aim is to deliver moderate returns without excessively deep drawdowns.

ParameterBalanced portfolio
Compositioncomparable allocations to stocks and bonds, with some liquid funds
Returnhigher than a conservative portfolio, lower than an aggressive one
Fluctuationsmoderate
Suitable forinvestors with a medium-term horizon and moderate risk tolerance

Aggressive investment portfolio

An aggressive portfolio aims for maximum growth. Most capital is invested in stocks, including growth companies, sometimes with higher-risk instruments. Potential returns are higher, but drawdowns can be deep and prolonged. This approach makes sense with a long horizon and a real ability to withstand losses.

Growth portfolio and income portfolio

Another classification is based on the main investment goal.

ParameterGrowth portfolioIncome portfolio
Main goalincrease capital valuereceive regular payments
Key ideaprofit from rising asset pricesprofit from dividends, coupons and rent
Assetsgrowth stocks, broad-market ETFsdividend stocks, bonds, real estate funds
Risk levelhighermoderate
Volatilityhighlower
Suitable fora long horizon, no need for income nowa need for passive income, approaching retirement

If you are building an income portfolio, you can follow payments in the dividend tracker: it shows payment history and a forecast for the coming months.

How to build an investment portfolio: step by step

If you are wondering how to put a portfolio together, start with your goals and constraints. Choosing individual stocks or funds comes last, once you understand what you need them for. This order makes it easier to build a portfolio without random purchases.

Step 1. Define your financial goal

State what you want from your investments and when. "Make money" is too vague. "Save 1,000,000 UAH for a home down payment in six years" is specific.

Step 2. Define your investment horizon

Work out how many years you have before you need the money. If you have several goals, each will have its own horizon and probably its own allocation.

Step 3. Assess your acceptable risk level

Answer two questions separately: how calmly can you handle a drawdown, and how much can you lose without harming your budget? Before starting, build an emergency fund so that unexpected expenses do not force you to sell assets at a loss. We explain how to calculate it in our article on controlling personal finances before investing.

Risk assessment and projected portfolio value in Strum

Step 4. Choose your asset classes

First choose the categories and their roles: how much to hold in stocks, bonds and liquid funds. Individual tickers come next.

Step 5. Plan diversification

Check concentration across asset classes, sectors, issuers, countries and currencies. If one position accounts for 30–40% of the portfolio, risk is concentrated in one place.

Stock and sector analysis for portfolio diversification in Strum

Step 6. Set portfolio management rules

Decide in advance how often to review the allocation, how to distribute new contributions and what deviation from the plan will trigger rebalancing. For example: review quarterly and rebalance if an asset class's weight moves by more than five percentage points. In Strum, you can set a target allocation, and the service calculates which assets to buy with a new contribution.

Portfolio rebalancing against target asset weights in Strum

Example investment portfolios for a beginner

Below are three hypothetical scenarios. The percentages are educational examples to illustrate allocation logic. They are not investment recommendations.

CautiousBalancedGrowth-focused
Goal: preserve capital and outpace inflation. Horizon: 1–3 yearsGoal: moderate capital growth. Horizon: 5–10 yearsGoal: maximum capital growth. Horizon: ten years or more
70% bonds, 20% cash, 10% stocks or ETFs50% stocks and ETFs, 40% bonds, 10% cash80% stocks and ETFs, 15% bonds, 5% cash
Minimal fluctuations, money can be accessed quicklyStocks provide growth; bonds soften drawdownsA long horizon allows time to ride out market downturns

The scenarios differ in their balance of risky and stable assets. That balance depends on the time horizon and goal discussed above.

Common mistakes when building an investment portfolio

MistakeWhy it is a problemWhat to check
No goalyou cannot tell whether the portfolio is doing its jobwhether the amount and deadline are written down
All money in one assetone failure affects all your capitalthe weight of your largest position
False diversificationmany positions share the same risksectors, countries and currencies of the assets
Choosing solely on past returnspast results do not guarantee future performancewhy the asset rose and whether those reasons still apply
Ignoring fees and liquidityfees reduce returns; accessing money on time can be difficulttotal costs and the time needed to sell an asset
Frequent emotional changesbuying at the peak and selling at the bottomwhether the decision follows your rules
No trackingactual returns and allocation are unclearwhether you can see P&L, dividends and allocation
Treating high potential returns as guaranteedrisk is underestimatedwhat happens if the portfolio falls by 30–50%

Checklist before building your first investment portfolio

Go through the points and mark those you have completed. If most remain unticked, return to the steps above.

  • I have defined a financial goal with an amount and a horizon.
  • I have an emergency fund.
  • I know how much I can invest without harming my budget.
  • I have assessed acceptable risk, both psychologically and financially.
  • I understand when I may need this money.
  • I have chosen an allocation across asset classes.
  • I have checked diversification across sectors, countries and currencies.
  • I have set rules for rebalancing and restructuring the portfolio.

This material is for informational purposes and is not investment advice. You make your own investment decisions.

FAQ

Frequently asked questions

Technically, yes: one asset can be considered an investment position or the simplest portfolio. However, it offers no diversification between assets, and the entire outcome depends on a single instrument.

There is no universal number. What matters is not the number of positions but how much they depend on the same risk factors. Two or three broad ETFs covering different markets may offer better diversification than 20 stocks in one sector.

There is no optimal portfolio for everyone. An optimal investment portfolio is one that fits an individual investor's goal, horizon, risk profile, liquidity needs and other constraints.

Some investors review on a schedule, such as quarterly or every six months. Others review when goals or financial circumstances change significantly, or when the allocation drifts from the plan. The key is to choose a rule in advance and follow it.

Diversification determines how risk is spread across a portfolio. Rebalancing brings the actual allocation back to the planned one when price changes have shifted it.

About the author

Oleksandr Yutysh — co-founder of Strum and founder of YU.invest

Co-founder of Strum

Co-founder of Strum, founder of YU.invest, and author of Strum feature and financial-methodology content.

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