The Nasdaq Friday bolted above 5,000 following a surge in biotech company Biogen as US stocks gained more broadly on a pullback in the dollar.
At the closing bell, the tech-rich Nasdaq Composite Index stood at 5,026.42, up 34.04 points (0.68 percent), finishing above 5,000 for only the fourth time in its history.
The Dow Jones Industrial Average jumped 169.42 (0.94 percent) to 18,128.45, while the broad-based S&P 500 rose 18.18 (0.90 percent) to 2,108.15.
US stocks got a lift as the dollar retreated following a Federal Reserve statement two days ago that vowed a cautious approach to lifting interest rates.
Biogen surged 9.8 percent after reporting that clinical trials of its aducanumab drug slowed dementia by a significant amount.