Tesla stock: these 2 bubble indicators explain why TSLA won’t go into my ISA!

After skyrocketing by 760% in a year, Tesla stock has exploded to an all-time high. But I think buying TSLA now will be an absolute disaster for me. Here’s why.

| More on:

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.

One thing I’ve learnt from history is that humans don’t learn very well from the past. Financial history is littered with booms, bubbles and busts. Early asset bubbles include the Dutch tulip mania of 1634-37, the South Sea Bubble of 1720, and repeated railway manias in the 1800s. I personally observed the stock and property bubbles of 1980s Japan, the dotcom boom of 1995-2000, and the global financial crisis of 2007-09. Not all bubbles look alike, nor do they inflate identically. But eventually, they all burst painfully. Hence, here are two scary reasons why I would not buy Tesla (NASDAQ:TSLA) stock for my ISA at anywhere near the current price.

Tesla stock: the mother of all bubbles?

Earlier today, I explained why why I see Tesla stock as the mother of all bubbles. For me, TSLA is like no other bubble stock, largely because of its sheer size and scale. Today (Monday), Tesla enters the S&P 500 index as its sixth-largest member, behind the ‘big five’ tech mega-caps. Tesla is also the largest S&P 500 entrant ever. With passive S&P 500 tracker funds forced to buy TSLA stock, the share price has soared 70% since mid-November. At Friday’s close, Tesla’s share price hit an all-time high of $695, valuing the carmaker at $658.8bn. I pray this marks the peak of this gigantic bubble — and here are two reasons why TSLA isn’t for me.

1. Tesla stock has risen almost tenfold since March

At the end of 2019, Tesla stock closed at $83.67, but then added nearly $100 in 50 days, soaring to close at $183.48 on 19 February. Then Covid-19 sent global stock markets spiralling downwards. TSLA collapsed to $70.10 on 18 March, crashing by more than half (61.8%) in a month. However, anyone buying Tesla back then and holding on has made almost 10 times their money. Indeed, many TSLA stockholders have amassed life-changing paper profits. However, while I might just have dipped into Tesla stock in March, I would never do so today at nearly 10 times the price. That’s because I won’t buy into frothy bubbles.

2. Tesla is worth almost as much as all other carmakers combined

By market value, Tesla is the world’s most valuable car manufacturer by a gargantuan margin. Market leader Toyota will sell around 9.5m vehicles this year, yet is worth just $250bn — that’s almost $410bn less than Tesla. To get near to Tesla’s current equity value means adding up the combined market values of the top seven or eight carmakers. Also, Tesla’s valuation is approaching the collective valuation of the rest of the global car-making industry combined. Yet Tesla will sell only half a million of the 61.9m cars forecast to be sold in 2020. How could a business with a 0.8% market share possibly be valued almost as much as the other 99.2% put together? To me, this is yet another huge warning sign flashing red over TSLA.

In conclusion

In my view, Tesla stock is in a massive bubble similar to the one I shunned in 1999-2000. It has been inflated by millions of momentum-driven retail investors speculating in Tesla shares. When this bubble eventually bursts, I expect TSLA to decline steeply. The same happened in the dotcom bust of 2000-03 and again in 2007-09. And I think it will happen again, when financial gravity overwhelms the Robinhood herd. That’s why Tesla stock won’t be going anywhere near my tax-free Stocks and Shares ISA in 2020-21!

Cliffdarcy has no position in any of the shares mentioned. The Motley Fool UK owns shares of and has recommended Tesla. 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

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 »