Platforms' in-house portfolios can overcomplicate things for new investorsAdventurous funds have bet big on the USIncome portfolios tend to be at the low end of the risk scale ‘Best-buy’ fund lists have long been a prominent part of investment platforms’ offer to their customers. In recent years, these have been joined in the shop window by portfolios run by platforms’ own investment managers, aimed at less experienced or uncertain users. But the performance and structure of these funds can vary widely, and it is worth paying attention to their foibles.While...