When using Coarse function for universe selection like this:

IEnumerable<Symbol> MyCoarseFilterFunction(IEnumerable<CoarseFundamental> coarse) {
var stocks = (from c in coarse
where c.DollarVolume > 30000000 &&
c.Price > 30
orderby c.DollarVolume descending
select c.Symbol).Take(100).ToList();
return stocks;

Is there an easy way to exclude all index or ETF stocks?

Or is there a way to find out if a symbol is actually an index or ETF with code?