Among chief executives of S.&P. 1500 firms, for each woman, there are four men named John, Robert, William or James. We’re calling this ratio the Glass Ceiling Index, and an index value above one means that Jims, Bobs, Jacks and Bills — combined — outnumber the total number of women, including every women’s name, from Abby to Zara...
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The Glass Ceiling Index is a fun but quite imperfect way of measuring the permeability of the glass ceiling. (Especially because in a few decades, the millennial Jacobs, Tylers and Zacharys will outnumber baby boomer Bills and Bobs.) But it does point to an important truth — that in many important decision-making areas of American life, women remain vastly outnumbered.
