Amid headlines about women losing ground in the workplace throughout the pandemic, Equilar is releasing new data on women's progress towards equity on corporate boards. Equilar's new Gender Diversity Index, just released today, finds that 23.5% of all board seats on the Russell 3000, which tracks the performance of the 3,000 largest public U.S. companies, are held by women, as of the fourth quarter of 2020. That's up from 21.5% in the fourth quarter of 2019, from 18.5% at the end of 2018, and from 15% at the end of 2016.

But while the percentage continues to inch up, 6% of those Russell 3000 boards have no women on them at all, and on the other side of the spectrum, only 8% of boards are at least 40% female. Only 71 companies have boards that are at least half female — just 2.4% of the total. That adds up to a mind-bending fact: there are more than twice as many companies that have no women on their board, as there are companies with half-female boards.