The dot-com bust, likewise, started pretty quietly. One can reasonably date the top of that bubble as March 10, 2000, when the Nasdaq closed at a record 5,048.62, up a grand total of 1.76 points from the day before.The Dow, for example, closed at an all-time high of 2,722.42 on Aug. 25, 1987. It fell 17.4% from then until Oct. 16, 1987. On Monday, Oct. 19, the index crashed, falling 22.6% in one day. And since then the Dow has never even approached that day's close: 1,738.74. It closed Nov. 5 at 47,436, or ...