So I got my universe selected and filtered by DollarVolume (btw, is there a way to filter based on market cap?),

now i want to apply a certain ema per each of the securities in the filtered universe, and do some calculations on it, (for example to check the trend of the ema) - but how can i do that without knowing which particular securities were dynamically filtered for that universe?

Also, is there a way to output the list of securities to the log?