What are the differences between ESG and the Social Credit System of the People's Rebublic of China?
The normal fund won't care about ESG at all and your money will go to all kinds of different companies.
The ESG fund will market itself as ESG. You probably should read up on the benchmarks that the fund cares about.
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Ex: iShares ESG Aware MSCI USA ETF (ESGU) fund. You can buy it, or not buy it. ESG isn't about getting "all" the investors involved. Its just about collecting enough investors together that the pool of money becomes a feasible corporate-politics entity.