An internal memo written by a male Google engineer has reignited a heated debate about representation in Silicon Valley. Google’s new diversity VP has since come out against the memo’s central claims — which include statements about women being biologically unsuited to engineering jobs — but the debate still rages on.

Here’s a look at major tech companies’ comparative diversity, according to their most recent reports. Women make up at most 30 percent of leadership roles and less than 27 percent of technical roles at these companies.

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