The Dow Jones industrial average rose 0.7 percent, while the broad S&P 500 index and the tech-heavy Nasdaq composite index rose 0.2 percent.
All three indices thus closed at record highs.
Dell surged 33 percent after Thursday's very strong report.
The gains came as President Donald Trump considered whether to accept or reject a proposed 60-day extended ceasefire with Iran.
The price of North Sea oil fell by 1.8 percent during the day, to $92.1 per barrel.
During the week as a whole, the Dow rose 0.9 percent, the S&P 500 index rose 1.9 percent, and the Nasdaq rose 2.4 percent.
The S&P 500 has now risen for nine weeks in a row, the longest period since 2023.
