The Nasdaq composite index closed at a record high Thursday for the first time since March 2000. Adjusting for inflation, the index is still below the peak it reached during the height of the dot-com bubble.
Here are some facts and figures to help explain how the Nasdaq got from there to here.
Record high close reached Thursday: 5,056 points.
Previous closing high reached March 10, 2000: 5,048 points.
Previous record high figure, adjusted for inflation: 6,908 points.
The share of technology companies in the index:
2000: 65 percent.
2015: 42 percent.
Number of tech stocks in the Nasdaq:
Biggest company in the index
2000: Microsoft ($525 billion)
2015: Apple ($749 billion)
Nasdaq trough reached Oct. 9, 2002: 1,114
Data supplied by Nasdaq, FactSet and Birinyi Associates.