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Irrational Exuberance

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Investors beware: Bull markets don’t last forever

New research explains why high valuations, low dividends and bullish sentiment rarely coexist with strong long-term returns after extended bull markets. 

Howard Marks warns of market froth

The renowned investor has penned his first investor letter for 2025 and it’s a ripper. He runs through what bubbles are, which ones he’s experienced, and whether today’s markets qualify as the third major bubble of this century.

Learn from the last tech bubble and embrace GenAI mania

Using the internet bubble of the 1990s as a guide, we draw lessons for today’s investors in the Generative AI mania. Although bubbles eventually end in a bust, the mania generates capital investment that often yields long-term benefits.

Is the speculative fever in 'hot stocks’ over?

A check on price chart action for dozens of favourite tech stocks shows how dramatic the rises and falls have been. Where to from here? There's better value but profits need to remain strong or prices will fall.

Four bubbly market pockets show heightened risk for investors

At the top of every market, there are signs that investors look back on and say the excesses were obvious. While many parts of the market are fairly valued, here are four bubbles which show irrational exuberance.

How much bigger can the virus bubble get?

  Stocks have rallied hard creating a virus bubble, but will this run for years or collapse in a matter of months? The market is giving a second chance to leave so head for the exit before there's a rush.

Easy money: download Robinhood, buy stonks, bro down

Millions of inexperienced traders have entered global equity markets since the end of March, fuelled by hype in a rapidly-rising market. What is happening and how are they having an impact?

Warren Buffett's letter about new investors and speculation

A pin lies in wait for every bubble. And when the two eventually meet, a new wave of investors learns some very old lessons: speculation is most dangerous when it looks easiest.

Irrational exuberance: is history repeating?

The widely-quoted Shiller P/E measure of the S&P500 now stands well above its long-term average, but is this a reliable signal that the US market is seriously overpriced?

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