09 Dec 2025 | Edukatips

Understanding Stocks as an Investment Instrument

In the world of investing, Stocks are among the most sought-after and widely purchased instruments. But what exactly are Stocks?

Stocks represent ownership in a company. When investors buy Stocks, they gain a claim to a portion of the company’s earnings, proportional to the number of Shares they hold.

Compared to other investment instruments like Money Markets and Bonds, Stocks come with higher volatility but also the potential for higher returns. Because of this, Stocks are generally more suitable for investors with an aggressive risk profile, low liquidity needs, and a longer investment horizon.

In General, Shares Are Traded on Two Markets:

  • Primary Market / Initial Public Offering (IPO): the market where Shares are sold for the first time after obtaining an effective statement from the Financial Services Authority (OJK).
  • Secondary Market: the market where Shares are traded after the primary market phase, and all transactions take place on the stock exchange.

Basic Information About Stocks

  • Stocks represent ownership in a company, not debt securities.
  • Shareholders have voting rights at the General Meeting of Shareholders (GMS).
  • When a company earns profits, part of those profits may be distributed to investors as dividends.
  • Information about a company’s dividend policy can be found in the Prospectus, but dividend distributions depend on each company’s policy and are not mandatory.

Types of Stocks

  • Common Stock: represents an individual’s or entity’s ownership in a company.
  • Preferred Stock: offers fixed dividends, and preferred shareholders have priority over common shareholders when it comes to dividend distribution.

Stock Categories

  • Cyclical Stocks: Stocks which performance moves in line with economic conditions, making their price movements more volatile. Sectors in this category include consumer discretionary (tertiary goods such as clothing and leisure), property, technology, automotive, and financials.
  • Defensive Stocks: Stocks with consistent and relatively stable performance across different economic conditions. Sectors in this category include consumer staples (FMCG), healthcare, and utilities.
  • Income Stocks: Stocks that provide investors with regular income in the form of dividends that are higher than the market average.
  • Growth Stocks: Stocks with the potential for price increases that are significantly higher than the market average.
  • Value Stocks: Stocks that are purchased at a price lower than their intrinsic value.

Based on market capitalization, Stocks can be classified into:

Big Cap

(Large Capitalization)

Small-Mid Cap

(Small-Medium Capitalization)

Market Capitalization

Large (> IDR 100 trillion)

Small to medium (≤ IDR 100 trillion)

Volatility*

Price volatility tends to be higher due to high trading volume from a wide range of investors.

Price volatility is sometimes lower because trading values tend to be low. These Stocks are often traded by fewer investors.

Valuation

Tends to be higher

Tends to be lower

Liquidity

More liquid

Less liquid

Growth Potential

Stock prices tend to be high, so the potential for further price increases is more limited.

Stock prices tend to be lower, so the potential for price increases is greater.

*Volatility is measured based on the standard deviation of the benchmark index movement during the 2021 to 2024 period.

Advantages and Risks of Stock Investment

When investing, investors naturally expect to earn a return. However, it is important to remember that the higher the potential return, the higher the risk. Below are the advantages and risks of investing in Stocks.

Advantages of Stock Investment

  • Total return, which is the sum of price changes and dividends (if distributed), has the potential to be higher than other asset classes such as Money Market Instruments or Bonds. 
  • Direct Ownership of the Company: you become a partial owner of the company.
  • Investing in Stocks is more flexible; investors can choose Stocks that suit their risk profile and investment objectives.

Stock Investment Risks

  • Market risk: risk arising from changes in the selling price of Shares on the market. If the Share price declines, investors will experience capital loss.
  • Liquidity risk: risk arising when Shares are difficult to trade on the market.
  • Risk of forced delisting: a situation in which a company is forced to remove its Shares from the stock exchange.
  • Suspension risk: risk that occurs when the trading of a company's Shares is temporarily suspended by the stock exchange.
  • Bankruptcy risk: risk that occurs when a company is unable to pay its obligations and goes bankrupt.
  • Stocks are not guaranteed by the Deposit Insurance Corporation (LPS) because they are not banking products.

Investors can purchase Stocks through a Securities Company or by visiting a BCA branch, which can help provide a referral to BCA Sekuritas. In addition to direct purchases, Stocks can also be bought through Mutual Funds, one of which, through Equity Mutual Funds in myBCA. For more detailed information, click here.