by points, yes. by % the largest since Black Monday 1987, which is still the all-time record. the worst day of 1929 comes in 3rd.Didn't the Dow recently have it's biggest one-day fall since 1929?
the last 3 weeks have seen 3 of the Dow's largest over one-day % losses and 2 of its largest ever one-day % gains.
the all-time 20 on both sides are pretty interesting lists, actually
biggest gains is almost all the Great Depression, with 2 from this last month and another 2 from 2008, and another from 1987
biggest losses has a lot of Great Depression, as well as now, but it's significantly more spread out and has a bunch of one-offs
i.e. 1987 Black Monday, the first trading day after 9/11, the day after Germany announced during WWI it would engage in unrestricted submarine warfare