2.3 Methods of Investing and Dollar Cost Averaging

Key Takeaways

  • A lump sum purchase is the most common way savings are invested in a scheme, and it carries no commitment to add further money.

  • Reinvesting income distributions buys additional units each time a distribution is made, which compounds returns over time.

  • Regular savings contributions in a scheme are not contractual and can be stopped at any time without penalty.

  • In the study guide's falling-market example, investing RM6,000 a period gives an average cost of RM4.38 per unit versus RM6.00 when buying a fixed 1,000 units each period.

  • Dollar cost averaging helps but does not guarantee favourable results, and it works best when used consistently over long periods.

Last updated: October 2026

Three Ways to Invest

MethodHow it worksTypical use
Lump sum purchaseInvest a single amount that meets the minimum application amount; no further commitmentAn inheritance or bonus set aside for education, retirement or a house
Reinvestment of incomeDistributions are used to buy more units instead of being paid outTurning small distributions, which are often just spent, into more units
Regular savingsContribute regularly (for example monthly), in effect a series of small lump sumsInvestors with small capital building towards a future need

Lump sum – the study guide calls it the most common method. Over time the unit price is expected to reflect accumulated and compounded returns, but if returns are negative the investor may get back less than invested.

Reinvestment – some Scheme Providers reinvest distributions automatically under a standing instruction; others give extra units through a unit split. Either way the compounding effect is the same.

Regular savings – contributions are not contractual and can be stopped at any time without penalty. This disciplined, flexible approach is the same principle that underlies EPF retirement saving, and it lets people with small capital participate with a low outlay.

Dollar Cost Averaging

Dollar cost averaging means investing a fixed amount of money at regular intervals, whatever the price. Because the amount is fixed:

  • when prices are low, the money buys more units;
  • when prices are high, it buys fewer units.

This can bring the average cost per unit below the average price over the period. The rationale is that hardly anyone can consistently invest at the bottom of the market, so most small investors are better off investing regularly through all stages of the cycle.

The study guide compares two investors who each spend RM30,000:

  • Investor A buys a fixed number of units (1,000) every period, so the amount spent varies.
  • Investor B invests a fixed ringgit amount (RM6,000) every period, so the number of units varies.

Falling market

Unit priceA: unitsA: costB: unitsB: cost
RM10.001,000RM10,000600RM6,000
RM8.001,000RM8,000750RM6,000
RM6.001,000RM6,0001,000RM6,000
RM4.001,000RM4,0001,500RM6,000
RM2.001,000RM2,0003,000RM6,000
Total5,000RM30,0006,850RM30,000

Average cost: A = RM30,000 ÷ 5,000 = RM6.00; B = RM30,000 ÷ 6,850 = RM4.38. B holds 1,850 more units, which pays off if prices recover.

Rising market

With the same prices in reverse order (RM2 up to RM10), the totals are identical: A still averages RM6.00 and B RM4.38. B keeps the cost advantage.

Fluctuating market

Unit priceA: unitsA: costB: unitsB: cost
RM10.001,000RM10,000600RM6,000
RM6.001,000RM6,0001,000RM6,000
RM8.001,000RM8,000750RM6,000
RM6.001,000RM6,0001,000RM6,000
RM2.00——3,000RM6,000
Total4,000RM30,0006,350RM30,000

A's budget runs out after four purchases: average RM7.50. B averages RM30,000 ÷ 6,350 = RM4.72. The study guide notes that the benefit is even more marked in a fluctuating market.

The Formula to Use in the Exam

Average cost per unit=Total amount investedTotal units bought\text{Average cost per unit} = \frac{\text{Total amount invested}}{\text{Total units bought}}

Compare it with the simple average of the prices paid. Example: RM300 invested in each of three months at RM1.00, RM0.75 and RM1.50 buys 300 + 400 + 200 = 900 units for RM900, an average cost of RM1.00, below the average price of (1.00 + 0.75 + 1.50) ÷ 3 = RM1.0833.

Caveats

  • Dollar cost averaging helps but does not guarantee good results. In the falling and fluctuating examples both investors lost money because the final price was below their average cost.
  • Its real value is the commitment to regular investing: buying more units when fear is greatest, and avoiding the need to time the market.
  • It should be used over long periods to get the full benefit.

Lump Sum or Regular Savings?

QuestionLump sumRegular savings / dollar cost averaging
Money available now?Needs a large amount up frontWorks from small monthly amounts
Market timing riskHigh: all money enters at one priceLower: purchases spread across prices
DisciplineOne decisionBuilds a saving habit, like EPF contributions
When it shinesPrices rise steadily after the purchasePrices fluctuate or fall before recovering

A Consultant should match the method to the client's cash flow and temperament. A client with an inheritance who is nervous about markets might combine a smaller lump sum with a regular monthly top-up, gaining some immediate exposure while averaging the rest.

Test Your Knowledge

An investor puts RM600 into a fund in each of three months at unit prices of RM0.50, RM0.30 and RM0.60. What is the average cost per unit?

A

RM0.4286

B

RM0.3667

C

RM0.5000

D

RM0.4667

Test Your Knowledge

Which statement about regular savings plans in a scheme is correct?

A

Contributions are not contractual and can be stopped at any time without penalty

B

Regular savings plans are prohibited for PRS

C

Regular savings are only available to investors with more than RM10,000

D

Contributions are contractual, so stopping them triggers a penalty

Test Your Knowledge

Under dollar cost averaging, what happens when the unit price falls?

A

The fixed amount invested buys fewer units

B

The investor must increase the amount invested

C

The fixed amount invested buys more units

D

The investor's average cost per unit automatically rises

Sections you finish are checked off in the contents.