Insync: Market concentration a myth
‘The CIO of one of Australia’s biggest super funds recently said there is stock concentration in markets, being driven by an increase in tech stocks,’ says Insync Head of Strategy and Distribution, Grant Pearson. ‘And she is not alone. Bloomberg has also recently made this statement, adding to a popular chorus across the media over the past year.’
Insync looked across reasonable 5-year period blocks since 1980 to test the belief with today’s big six tech stocks. The Top 10 over these five-year periods held between 18%-29% of market cap for the S&P 500. The S&P 500 best represents all industry sectors where most of the market capitalisation exists.

‘It’s worth reminding ourselves that stocks such as Meta and Google are not classified as tech stocks but communication stocks, and for good reason,’ Mr Pearson says. ‘Apple, Microsoft and Cisco are ‘technology’ stocks, and Amazon is a ‘consumer discretionary’ stock.’
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