To index or not to index? That is the question

Is buying an index fund the right approach for your portfolio?

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Indexing, or passive investing, is all the rage at the moment. According to research from Bank of America since 2002 over $1.4trn of assets have found their way into passive ETFs. Meanwhile, investors have been dumping actively managed funds. 

Year-to-date $260bn has flowed out of US long-only equity mutual funds, 3.9% of industry assets under management. At this rate, it will only take 19 years for US investors to dump all of their holdings in actively managed funds. Analysts at Deutsche Bank have echoed this view. They believe that within five years the size of the so-called passive ETF market could grow to $6.2trn, up from $2.2trn today. 

But should you join this trend? 

Pros and cons 

There are a number of arguments both for and against the passive indexing movement. 

Firstly, in the ‘pro’ camp, passive funds usually have lower fees than their active counterparts. Over the long term, the extra 0.5%-1% in performance gained by lower fees can really add up. Secondly, passive funds have a record of outperforming active fund managers because they’re tracking an index and there’s no risk of making a stock picking mistake — if the index does well, the index fund should replicate its performance with the only negative drag being fees. 

However, indexing has its drawbacks as well. For a start, buying the whole index may not be suitable for every investor as it confines you to averages: an average performance and average yield.

Granted, an index portfolio will make sure your returns are matched to the index you’re tracking, but is this really the best solution for you? 

An income-seeking investor might prefer to buy a portfolio of dividend champions such as Shell, GlaxoSmithKline and BAE Systems alongside an index fund. Meanwhile, a growth investor with a longer investment horizon might consider buying an actively managed fund that targets growth stocks with a few select single stock ideas added to the portfolio to give it a boost. 

Moreover, fees are a problem with index funds. Indeed, most brokers charge an account management fee, so why should you have to pay a fee to the fund managers running an index fund when a portfolio of blue chips may produce the same, if not better, result?

Depends on your circumstances 

Ultimately, whether or not you should follow the trend of indexing depends on your circumstances.

If you’re a beginner investor who can’t wait to dive into the market, it may be best to buy an index fund and learn the ropes before plunging into individual stocks. If you have some experience investing, using an index fund alongside some select stock picks may help boost your long-term returns. All in all, index funds can be helpful for some, but they’re not a blanket solution for all investors. 

Rupert Hargreaves owns shares of GlaxoSmithKline and Royal Dutch Shell B. The Motley Fool UK owns shares of and has recommended GlaxoSmithKline. The Motley Fool UK has recommended Royal Dutch Shell B. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

Is 50 too old to start buying shares?

Christopher Ruane explains why 'better late than never' is key to his thinking about whether 50's too old to start…

Read more »

Two male friends are out in Tynemouth, North East UK. They are walking on a sidewalk and pushing their baby sons in strollers. They are wearing warm clothing.
Investing Articles

Here’s what £150 a month in a Junior ISA could be worth by 2045…

You might be surprised to learn by how large a Junior ISA portfolio could become inside 20 years from modest…

Read more »

Investing Articles

This red hot equity fund in my SIPP returned 12.6% in the first 2 months of 2026

This global equity fund is delivering huge returns for Edward Sheldon’s SIPP in 2026, despite all the risks and uncertainty…

Read more »

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.
Investing Articles

Want to retire richer? Here’s Warren Buffett’s golden rule to build wealth

If you want to build wealth for a richer retirement, then following Warren Buffett’s golden rule might be the best…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

Get ready for stock market volatility…

As conflict in the Middle East makes share prices fluctuate, what strategies can investors use to try and find opportunities…

Read more »

British Isles on nautical map
Investing Articles

Why the FTSE 100 fell almost 5% this week

Declines in mining shares dragged the FTSE 100 down after a strong start to the year. Is the pullback an…

Read more »

Middle aged businesswoman using laptop while working from home
Investing Articles

How much do you need to invest in US stocks to earn a £2,000 monthly passive income?

Is it possible to target several thousand pounds of passive income each month by buying US growth stocks? Absolutely –…

Read more »

A mature woman help a senior woman out of a car as she takes her to the shops.
Investing Articles

How big does your ISA need to be to earn £1,000 a month in passive income?

Andrew Mackie explains how a long-term ISA strategy can help investors build a chunky £12,000 passive income in less than…

Read more »