I see investing in FTSE 100 shares like GSK as a marathon, not a sprint

Long-term investing in shares like GlaxoSmithKline plc (LON:GSK) requires preparation, patience and discipline to successfully cover the long distance ahead.

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.

To me investing in FTSE 100 shares is a marathon, not a quick dash. For most investors, the finish line would be retirement, possibly decades away.

Dreaming of and running after overnight gains rather than stable performances over the long haul is not the easiest way to secure a financially safe retirement. So I would urge our readers not to worry too much about daily price fluctuations in their portfolios. Instead, do due diligence on the companies you are interested in. It is similar to preparing the mind and the body to run a marathon.

We are investors, not speculators

Share prices fluctuate daily and this volatility affects an investor’s sentiment. For example, when the price of a share falls, you may panic. The more you panic, the more uneasy you feel, the more likely you are to throw in the towel and sell that share at a loss. But in many cases, shares of good companies will rebound from their short-term lows.

Newcomers to investing may want the shares they have just bought to go up immediately. Many people dream of buying stocks today whose prices soar in a few days. But this is not investing, it is speculating.

When share prices rebound, unprepared investors may end up buying the same firms at a price higher than they previously sold. This would be an example of ‘high buy and low sell’. And it is definitely not a good way to invest.  Instead, be disciplined and patient to reap the results over the long run, again, just as a marathon contestant would.

Let’s look at an example

One of my favourite pharma stocks is FTSE 100 giant GlaxoSmithKline (LSE: GSK). Amid the recent volatile market conditions, I believe that it makes sense to consider buying shares in defensive industries such as healthcare.

In its latest quarterly update, the group reported solid year-on-year revenue growth of 7%. Year-to-date, the stock is up about 10%. Many analysts regard GSK’s vaccine franchise, including its shingles vaccine Shingrix, as a great success story.
 
The company has also recently launched an important joint venture with another pharma heavyweight, Pfizer, to form the world’s largest consumer healthcare company. GSK will now be able to distribute its top-selling consumer brands more efficiently.
 
However, the company’s share price increase in 2019 has not been uniform. If you had bought into GSK shares on 9 January, you would have paid about 1,537p per share. Then on 28 January, you might have become nervous as the share price had hit 1,436p.

At that point, if you had decided that this healthcare company was possibly not a keeper, then you would have missed the up move that has now taken the share price to about 1,720p.

If you had stayed the course, you would have seen your investment bring close to a double-digit return so far in the year. And you’d be enjoying a dividend yield of about 4.8%.

The bottom line

At the start of 2019, there were possibly many investors in GSK shares, just as on the starting line of a marathon, there are many runners. Not many in the markets or the marathon would be disciplined enough to cross the finish line. As long-term investors, we need to learn to control our emotions rationally.

tezcang has GSK covered calls (September 13 expiry) on GSK ADR shares listed on NYSE. The Motley Fool UK owns shares of and has recommended GlaxoSmithKline. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

ChatGPT thinks these are the 5 best FTSE stocks to consider buying for 2026!

Can the AI bot come up trumps when asked to select the best FTSE stocks to buy as we enter…

Read more »

Investing For Beginners

How much do you need in an ISA to make the average UK salary in passive income?

Jon Smith runs through how an ISA can help to yield substantial income for a patient long-term investor, and includes…

Read more »

Investing Articles

3 FTSE 250 shares to consider for income, growth, and value in 2026!

As the dawn of a new year in the stock market approaches, our writer eyes a trio of FTSE 250…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Want to be a hit in the stock market? Here are 3 things super-successful investors do

Dreaming of strong performance when investing in the stock market? Christopher Ruane shares a trio of approaches used by some…

Read more »

Two white male workmen working on site at an oil rig
Investing Articles

The BP share price has been on a roller coaster, but where will it go next?

Analysts remain upbeat about 2026 prospects for the BP share price, even as an oil glut threatens and the price…

Read more »

Investing Articles

Prediction: move over Rolls-Royce, the BAE share price could climb another 45% in 2026

The BAE Systems share price has had a cracking run in 2025, but might the optimism be starting to slip…

Read more »

Tesla car at super charger station
Investing Articles

Will 2026 be make-or-break for the Tesla share price?

So what about the Tesla share price: does it indicate a long-term must-buy tech marvel, or a money pit for…

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
Investing Articles

Apple CEO Tim Cook just put $3m into this S&P 500 stock! Time to buy?

One household-name S&P 500 stock has crashed 65% inside five years. Yet Apple's billionaire CEO sees value and has been…

Read more »