PalacioHill

Individual investors - generally none
Pension funds - ERISA
Foundations - varies from country to country but the US have the min 5% spending rule
Endowments - very little, many of the restrictions are put in place by the donor
Life insurance - Prudent investor rule, limitations of eligible investments, valuation rules governed by NIACs
Non life insurance - risk based capital requirements
Banks - heavily regulated, capital reserve requirements, must pledge collateral against uninsured deposits