New Delhi, Feb. 25 -- When talking of investments and the ideal portfolio, I speak about asset allocation, diversification across countries, sectors and so on. But that sounds too boring and everyone wants the lowdown on multi-year investment themes to play. Many seem convinced I am hiding it from them and probably sharing it only with a chosen few.

The all-time favourite question from professional interviewers as well as common investors is: Which is the theme you can recommend that will do well for the next few years, one that you can buy and forget?

By now, you will hardly find an expert who will admit to having hyped ESG as a long-term theme not so long ago. They might genuinely have forgotten this. The human mind has a great capaci...