Equity investment option within unit-linked investment plans (Ulips) just got a tad poorer with the regulator tightening the norms. According to the Insurance Regulatory and Development Authority of India (IRDAI), insurers can invest in equity shares of any listed company where at least 10 per cent dividend has been paid for at least two consecutive years under the approved investment category. This is a shift from the earlier 4 per cent in the last eight of the nine years.