It is apparent to even a casual observer of American society that women and minorities are underrepresented among managers, especially among top-level executives. Past studies, however, have failed to find a consistent pattern of female and minority disadvantages in actual promotions and hiring decisions to account for this underrepresentation. This study aims to resolve this incongruity. Drawing on panel data from a nationally representative sample of scientists and engineers, I analyzed transitions across authority levels for men and women of three broad racial groups: whites, Asian Americans, and underrepresented minorities. There are two main findings. First, downward mobility plays an important role in authority inequality, especially for Asian men and underrepresented minority men and women. Second, while women and minorities face lower rates of upward mobility than white men, their disadvantages are concentrated in the bottom to middle-level transitions. This pattern is inconsistent with the popular notion of a “glass ceiling,” which implies that women and minorities encounter an unbreakable obstacle in accessing top positions after they have made their way into mid-level management.