Hi,
I am surprised to see that the FactSet Fundamental's Common Shares Outstanding (com_shs_out) appears quite a lot in the corresponding documentation but is not directly accessible.
It can be easily reconstructed by adding up the Closely Held Shares (shs_closely_held) and the Float Shares (shs_float) but since it is quite a fundamental factor, I would be expecting to have it available directly.
Common Shares Used to Calculate Fully Diluted Earnings Per Share (com_shs_out_eps_dil) and Common Shares Used to Calculate EPS - Basic (com_shs_out_eps_basic) could be useful too.
Am I missing something?