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Concentration

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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.

Diversification works?

Nobody ever built a great business, or created a great nation, or amassed a great fortune, or became a great painter or musician or sportsperson or anything else, by diversifying. You need to specialise, concentrate and focus.

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Building a lazy ETF portfolio in 2026

What are the best ways to build a simple portfolio from scratch? I’ve addressed this issue before but think it’s worth revisiting given markets and the world have since changed, throwing up new challenges and things to consider.

Get set for a bumpy 2026

At this time last year, I forecast that 2025 would likely be a positive year given strong economic prospects and disinflation. The outlook for this year is less clear cut and here is what investors should do.

Meg on SMSFs: First glimpse of revised Division 296 tax

Treasury has released draft legislation for a new version of the controversial $3 million super tax. It's a significant improvement on the original proposal but there are some stings in the tail.

Ray Dalio on 2025’s real story, Trump, and what’s next

The renowned investor says 2025’s real story wasn’t AI or US stocks but the shift away from American assets and a collapse in the value of money. And he outlines how to best position portfolios for what’s ahead.

10 fearless forecasts for 2026

The predictions include dividends will outstrip growth as a source of Australian equity returns, US market performance will be underwhelming, while US government bonds will beat gold.

13 million spare bedrooms: Rethinking Australia’s housing shortfall

We don’t have a housing shortage; we have housing misallocation. This explores why so many bedrooms go unused, what’s been tried before, and five things to unlock housing capacity – no new building required.

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