Why it’s Not Enough to Buy the S&P/TSX Composite Index

If you’re only invested in the Canadian market, you should re-analyze your portfolio. S&P/TSX Composite Index (TSX:^OSTPX) gives a clue to the problem.

think, plan, and act to work towards your financial goals

When Warren Buffett said that investors should stick with index funds, he didn’t mean to buy just any fund and be done with it. It wouldn’t do to only invest in a fund that replicates the S&P/TSX Composite Index (TSX:^OSTPX) (i.e., the Canadian market).

Here’s why.

The index is concentrated in three sectors with an almost 69% weighting: financials (35.4%), energy (21.4%), and materials (12.1%). That’s not nearly sufficiently diversified.

The index lacks greatly in consumer staples (4% of weighting), utilities (3%), information technology (3%), and healthcare (0.6%). Consumer staples and utilities have tended to deliver stable returns with reduced volatility, dividends, and dividend growth.

Information technology has been an area for tremendous growth. The healthcare sector in general benefits from the megatrend of an aging population.

So, it does not make sense to have little exposure to consumer staples, utilities, information technology, and healthcare.

If you are invested in the S&P/TSX Composite Index, you can increase your exposure to consumer staples, utilities, information technology, and healthcare by investing in other index funds or by investing in selective stocks in each sector.

Tech stocks for growth

stock market index

In the information technology sector, we can look to the south of the border for a stock such as Facebook Inc. (NASDAQ:FB).

It still looks reasonably valued for double-digit growth potential, despite the shares trading near their all-time high.

Facebook will continue to benefit from the network effects of its growing global user base and the increasing spending on online and mobile advertising from its clients.

In Canada, we also have some technology stocks, including Shopify Inc. (TSX:SHOP)(NYSE:SHOP), which provides a cloud-based, multi-channel commerce platform targeted at small- and medium-sized businesses, and Sierra Wireless, Inc. (TSX:SW)(NASDAQ:SWIR) which is involved with the Internet of Things.

Both companies have had strong revenue growth. Shopify and Sierra Wireless have increased their revenues at a compound annual growth rate (CAGR) of 100% and 11.6%, respectively, in the last four years. Compare that to Facebook, which has increased its revenue at a CAGR of 52.6% in that period.

Ensure your portfolio is sufficiently diversified

If investors want to keep it really simple and invest in only one index fund, they can opt to invest in SPDR S&P 500 ETF Trust (NYSEARCA:SPY), which is well diversified.

The index fund seeks to replicate the performance of the S&P 500 Index, which is a market capitalization-weighted index of the 500 largest companies that are publicly traded in the U.S.

Currently, the index has weightings of about 22.9% in information technology, 14% in financials, 13.8% in healthcare, 12.3% in consumer discretionary, 10% in industrials, 9.2% in consumer staples, and 2.8-6.2% in energy, utilities, real estate, and materials.

This is much more diversified than investing in a fund that replicates the S&P/TSX Composite Index. In any case, if you’re investing in funds, dollar-cost averaging over time is a good strategy. It takes away the emotions of greed and fear, which often deter investors from making the right investment decisions.

Fool contributor Kay Ng owns shares of Facebook. David Gardner owns shares of Facebook and Sierra Wireless. Tom Gardner owns shares of Facebook and Shopify. The Motley Fool owns shares of Facebook, Shopify, SHOPIFY INC, and Sierra Wireless. Shopify is a recommendation of Stock Advisor Canada.

More on Investing

senior relaxes in hammock with e-book
Dividend Stocks

Top Picks: 3 Canadian Dividend Stocks for Stress-Free Passive Income

For investors looking to pick up reasonable dividend income, but also want to sleep well at night, here are three…

Read more »

Real estate investment concept with person pointing on growth graph and coin stacking to get profit from property
Dividend Stocks

A 7.4% Dividend Yield to Hold for Decades? Yes Please!

Think all high yields are risky? MCAN Financial’s regulated, interest-first model could be a dividend built to last.

Read more »

Stacked gold bars
Metals and Mining Stocks

Locking in Gains by Selling Gold Stocks? Here’s Where to Invest Next

After gold's 137% surge in 2025, shift profits to copper, uranium, and oil dividend plays for AI and energy growth…

Read more »

man looks worried about something on his phone
Energy Stocks

1 No-Brainer Energy Stock to Buy With $500 Right Now

Learn why energy stock investments are essential in Canada, focusing on Canadian Natural Resources as a top choice for investors.

Read more »

dividend growth for passive income
Dividend Stocks

3 Canadian Dividend Stocks to Buy and Hold for 20 Years

Three TSX dividend stocks built to keep paying through recessions, rate hikes, and market drama so you can set it…

Read more »

diversification is an important part of building a stable portfolio
Dividend Stocks

TFSA Passive Income: 2 TSX Dividend Stocks to Consider Now

Building out a passive income portfolio with great TSX dividend stocks is easier than it sounds. Here are 2 stocks…

Read more »

top TSX stocks to buy
Dividend Stocks

How to Build a TFSA That Earns +$200 of Safe Monthly Income

If you want to earn monthly income, here is a four-stock portfolio that could collectively earn over $200 per monthly…

Read more »

ETF stands for Exchange Traded Fund
Stocks for Beginners

Here Are My 2 Favourite ETFs for 2026 

Explore how ETFs can enhance your investment portfolio strategy with balanced returns and market diversification.

Read more »