Oct 25 (Reuters) - Nvidia (NVDA.O), opens new tab, surpassed Apple (AAPL.O), opens new tab to temporarily claim the title of the world's most valuable company on Friday, driven by unprecedented demand for its advanced AI-focused chips, pushing its stock to record levels. Nvidia’s market capitalization briefly peaked at $3.53 trillion, nudging past Apple's $3.52 trillion, according to data from LSEG. By the end of the trading day, Nvidia closed 0.8% higher, giving it a valuation of