The GraniteShares 2x Long PLTR Daily ETF (PTIR) surged 6.84% to close at $104.19 on January 15, driven by strong performance in Palantir Technologies Inc. (PLTR), which is a major player in the big data sector. Palantir's stock has been buoyed by its strategic partnerships and high demand for its AI platforms, particularly from the federal government. The company's recent announcement of its upcoming earnings release on February 3rd has also generated investor interest. Additionally, significant institutional investments, such as Kathmere Capital Management LLC increasing its stake by 150.8% in the fourth quarter, have contributed to the positive sentiment.