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1 September 2026

Home / Concentration

Concentration

1-12 out of 13 results.

Four charts that expose market concentration risk

Investors have recently been rewarded for backing market leaders, but history suggests this eventually comes at a cost. Now may be the time to review whether your portfolio is carrying unintended risks beneath the surface.

The diversification illusion: why 'balanced' portfolios may be exposed

Many 'diversified' portfolios are increasingly driven by the same narrow set of forces. As concentration builds beneath the surface, understanding how portfolios behave - not just how they’re constructed - is critical for investors.

Is defensive the new offensive?

Relatively boring, unglamorous, defensive stocks like Kroger and Allstate have quietly outperformed gilded tech giants, offering steady growth, visibility, and resilient returns in a market captivated by AI and flashier industries.

Investors might be paying too much for familiarity

US mega-cap tech stocks have dominated recent returns - but is familiarity distorting judgement? Like the Monty Hall problem, investing success often comes from switching when it feels hardest to do so.

The two key risks facing investors

In 2024, markets were buoyed by decent economic growth and US rate cuts, even as valuations became stretched. This year, more resilient portfolios may be needed to tackle risks from higher bond yields and market concentration.

After DeepSeek, what's next for the big US tech companies?

DeepSeek has surprised investors, but it shouldn't: it's part of a normal capital cycle. Big tech companies have made a lot of money, which attracts capital and competition, and eventually hurts returns and incumbent share prices.

The risks of market concentration and not staying invested

MFS chief investment officer and CEO elect Ted Maloney talks market risks, similarities between Trump and Harris, and the most important thing investors can do to avoid destroying value.

What performs best after peaks in market concentration?

US market concentration in large technology companies has captured investor attention. Here explores how this concentration compares to history and what typically follows periods of extreme concentration.

The problem with concentrated funds

Many investors, including Warren Buffett, advocate concentration in funds - after all, if you don't have high conviction in positions, what's the point? Yet, there are a few compelling reasons to be sceptical of this approach.

The Magnificent Seven's dominance poses ever-growing risks

The rise of the Magnificent Seven and their large weighting in US indices has led to debate about concentration risk in markets. Whatever your view, the crowding into these stocks poses several challenges for global investors.

Competition and concentration issues in Australian investment markets

The prospect of Australia's superannuation industry becoming larger than the domestic equity market, and expected merger activity among super funds, has raised concerns about common ownership and capital concentration.

You think you're passive but are you really concentrating?

Rules of thumb often oversimplify things. While it looks like an index or passive portfolio spreads risks across the market, it is surprising how concentrated indexes have become, leaving investors with sector bets.

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