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Between shares and bonds, rebalancing your portfolio doesn't raise returns and usually costs a little. Its value is that it makes you buy what has crashed and sell what has soared, which instinct tells you not to do. The US evidence shows when it bites, how often to bother, and how to make it automatic.

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.

he most careful expert forecast of AI's economic effects covers GDP, productivity, employment and inequality. It does not cover share prices. Across 21 developed markets and 120 years of data, economic growth has shown no reliable positive relationship with what shareholders earn. What has correlated is growth in earnings per share, and four mechanisms separate the two. Here is what the evidence says about AI and stock returns, and what the railways and the dot-com boom alrea

Investment platform fees vary wildly — and small differences compound into serious money over time. Here's how to work out what you're really paying and whether it's time to switch.

Vanguard’s 50-year journey has transformed how everyday investors access and benefit from the financial markets. As it marks this...