Black Monday 1987 vs. The Dot-Com Bubble
What They Share
Both were major U.S. stock market crashes not directly tied to a banking crisis, and both followed periods of strong market enthusiasm that outran underlying fundamentals.
Where They Differ
Black Monday was a single, extraordinarily sharp one-day event (a 22.6% drop) followed by a relatively swift recovery over about two years. The dot-com bubble, by contrast, deflated over roughly two and a half years (2000-2002), as speculative internet-company valuations gradually gave way to reality — a slow bleed rather than a single dramatic crash.