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Concentration

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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.

Most viewed in recent weeks

It’s time for LICs to die

A high-profile dividend cut and a prominent fund manager’s apology have reignited a long-running debate. If investors can access similar exposures more cheaply and efficiently elsewhere, what exactly is keeping LICs alive?

Division 296: the initial moves to make before the windows close

What if the best superannuation strategy isn't about earning more, but acting before your options disappear? Several overlooked planning windows are narrowing, with consequences that can last for decades.

The retirement scorecard: how many of these questions can you answer?

From the maths of retirement, estimating spending and picking the right asset allocation to survive a poor decade, here are the questions every retiree – current or future – should be able to answer for themselves.

Testamentary trusts: Treasury has picked the wrong reading

A decades-old estate planning tool has survived one tax crackdown only to be caught by another. The surprise isn't who the reform is targeting, but who could end up paying the price for drafting choices made years ago.

Superannuation’s structural failings

Politicians are fighting over access to super, but they may be arguing about the wrong thing. The system’s three fundamental flaws have been hiding in plain sight for decades, costing Australians far more than they realise.

Avoid unnecessary CGT with this estate planning clause

A simple estate plan can create a ticking time bomb. One overlooked clause can pit spouses against children, delay inheritances, and potentially leave a family facing an unexpected tax bill worth hundreds of thousands of dollars.

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