Sort of correct, the 2012 version "... although it was designed originally for publicly held manufacturing companies with assets of more than $1 million. Later variations by Altman were designed to be applicable to privately held companies (the Altman Z'-Score) and non-manufacturing companies (the Altman Z"-Score)."
I figure that since ETFs are non-manufacturing it might well be worth calculating the Z"-Score for ETF/ETNs, at least a few, and see if, combined with other metrics such as the Piotroski F-Score, or maybe seekingalpha/AAII screenings, it might help. No clue yet, haven't done enough yet.
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