How to avoid redundant orders when multiple share classes exist

Hi Garrett,

Both classes have different tickers, of course. GOOG and GOOGL. I believe your algo uses universes, right? That's what I conclude from your post.

The easiest and more effective way I can see would be to always make sure that the one you do not want to buy is removed. In your coarse selection method, just before returning your list of symbols, make sure that the one you do not want is removed if present. For instance:

...
googl = Symbol.Create("GOOGL", SecurityType.Equity, Market.USA)
if googl in results:
	results.remove(googl)
return results

The code above assumes you do not want to buy GOOGL but GOOG is ok.

Fred

But, the question is how to do that in a systematic way. I would rather to avoid manually combing through all of the hundreds or thousands of symbols in my universe looking companies with multiple share classes.

You might be able to pass coarse selection through to fundamental selection. Fundamental objects have a company name property you can use to filter out, i.e. both $GOOG and $GOOGL are for Alphabet. 

Hi Garrett,

Check out the CompanyReference object in FineFundamental. I'm not sure it's what you need, but it looks like the PrimaryShareClassId and PrimarySymbol properties may help you.

-Cole