Wall Street giant Citigroup has adjusted its emerging market asset allocation, upgrading China to “overweight” as it looks for assets poised to benefit from a broadening market rally. The bank identified China and Mexico as prime candidates to capture capital rotating out of stretched technology valuations as the market rally expands. “If the macro environment remains favourable, including easing geopolitical risks, there is scope for broadening,” a team of strategists including David Groman...