Savings Plans and Asset Allocation

You now know how returns arise, what risk means and why costs and diversification matter. This lesson puts it all together into a practical plan: how much to invest, how often – and how to split your money.

First things first: an emergency fund#

Before you invest a single dollar in the market, you should have an emergency fund: three to six months of expenses in a high-yield savings account or money market fund. It covers broken appliances, car repairs or a stretch without income. Without it, you may be forced to sell stocks precisely when prices are at their lowest.

Likewise: pay off expensive debt such as credit card balances first. No investment reliably beats the 20%+ interest you save that way.

Automatic investing#

A recurring investment plan automatically buys a fixed dollar amount of an ETF or fund every month – through your 401(k) contributions at work or an automatic transfer at your broker. It has three big advantages:

1. Discipline: the money is invested before you can spend it – “pay yourself first”.
2. No timing required: you never have to decide whether now is a good moment. Nobody can do that reliably.
3. Small amounts are enough: with fractional shares, most brokers let you invest from a few dollars a month.

Dollar-cost averaging#

Because the amount is fixed, you buy more shares when prices are low and fewer when they’re high. Your average cost per share ends up below the average price over the period:

That’s dollar-cost averaging. It’s real, but often oversold: it doesn’t make you earn more than the market. It simply makes volatility work for you while you’re buying, rather than against you.

Asset allocation: the most important decision#

Your asset allocation sets what share of your money goes into stocks, bonds, cash and possibly other asset classes. It explains most of a portfolio’s ups and downs – far more than the choice of individual funds.

The basic idea: stocks are the return engine, bonds and cash the shock absorbers. More stocks means higher expected returns, but also deeper expected losses in a crisis.

Finding your mix#

Three questions help:

1. Time horizon: When do you need the money? Anything you’ll need in the next three to five years doesn’t belong in stocks.
2. Ability to take risk: How stable is your income? How big is your cushion? A tenured teacher can carry more stock risk than a freelancer in a volatile industry.
3. Willingness to take risk: How would you react if your portfolio were down 30% for a year? Be honest – panic selling locks in losses.

Simple portfolio examples#

• One-fund solution: a global stock ETF or a target-date fund that adjusts the mix automatically as your goal approaches.
• Two-fund portfolio: a total world stock ETF plus a high-quality bond ETF, for example 70/30.
• Three-fund portfolio: a popular US approach – total US stock market, total international stock market and total US bond market.

Rebalancing: back to target#

Over time your allocation drifts by itself. If stocks rise strongly, 70/30 quickly becomes 80/20 – your portfolio has become riskier without you deciding so. Rebalancing restores the target weights.

How often? Once a year is usually enough, or whenever an asset class drifts more than five percentage points from target. In taxable accounts, the most efficient way is to direct new contributions to the underweight asset class instead of selling – or to rebalance inside tax-advantaged accounts.

Summary#

Emergency fund first, then automatic investing: regular contributions take timing off your plate and let volatility help you while you buy. The most important decision is how you split money between stocks and safer assets – based on time horizon, ability to take risk and an honest look at your nerves. Rebalancing keeps your risk where you want it. That completes Module 3: you now have the tools to build a solid, simple portfolio.