There are sector index funds, smart beta index funds, equal weighted index funds, and many others, making it that much more challenging for investors to make sensible investment decisions. (csinvesting.ca)
The insurance sector index has fallen by more than 20 per cent since the start of the year. (rba.gov.au)
However, for excess money you can invest in sector index shares and pick sectors to match your desired risk / reward. (money.stackexchange.com)