Key Takeaways Year-end window dressing is driving funds to buy top 2025 performers before Dec. 31 reports.Micron Technology surged nearly 200% over the past year, fueled by AI memory demand.Palantir Technologies saw major stake increases from Vanguard and BlackRock.The final trading days of 2025 are delivering textbook year-end window dressing as institutional investors position portfolios for favorable year-end reports. With the S&P 500 up more than 16% year to date at 6,834 and the Dow Jones hovering near ...