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How much passive investing is too much?
Warnings that index funds have broken the stock market all imply a threshold: a share of the market at which price discovery fails. Nobody making the argument names it. Owen Lamont, writing in the Financial Analysts Journal, argues that no such number exists short of complete passive ownership, and that what actually determines whether prices stay informative is who is left doing the trading. His case, the strongest peer-reviewed research against it, and what the performance
Robin Powell
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When AI financial advice misleads by design
In a new experiment, 3,700 people chose between two index funds tracking the same index. One of them paid more in every possible outcome. When a chatbot was told to promote the worse fund, the share of people getting the choice right fell from 64 per cent to 34 per cent. Telling them the bank had money riding on their answer made no difference at all. A survey of 836 UK retail investors, published in July by Opinium, found that 54 per cent had already used AI to look up inves
TEBI
1 day ago4 min read
Why Vanguard is called Vanguard
Fifty years ago this week, the first index fund for ordinary investors went on sale and almost nobody bought it. The company behind it had been named two years earlier after a ship in a picture on its founder's wall. The story Vanguard tells about its own beginnings is tidier than what actually happened, and less useful.
Robin Powell
Sep 44 min read
FCA asset management reforms: the £128m question
On 14 July 2026 the FCA proposed the biggest overhaul of UK asset management regulation since the rules were inherited from the EU: a single remuneration code, a new fund-reporting framework and higher size thresholds, worth an estimated £128 million a year to firms. The industry welcomed it within hours. What the reforms mean for ordinary investors, and whether the savings ever reach them, is the debate that has barely begun.
TEBI
Jul 178 min read
Fundsmith's underperformance, at 21 times the cost
Terry Smith built Fundsmith on a simple discipline: buy good companies and do nothing. Now, five years into trailing the market, he is turning over half his portfolio and paying more attention to momentum. The strategy that made his name is changing. The fee that came with it is not.
Robin Powell
Jul 93 min read
Fund fees and performance: the link is getting stronger
New Morningstar research reveals the link between fund fees and performance has strengthened dramatically. A decade ago, some expensive funds generated enough alpha to partially justify their costs. Today, fees explain almost everything. The skill component has essentially vanished.
Robin Powell
Jan 229 min read
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