PSI is trading at $161.50, up 3.59%, as Micron’s record quarterly revenue and stronger outlook fuel optimism about AI chip demand. - PSI is a semiconductor ETF; available news points to sector strength rather than a PSI-specific announcement. - Micron reported record quarterly revenue of $54.23 billion; Reuters said its shares closed 3% higher after its forecast and customer commitments reinforced the AI trade. - The broader market is also higher, though semiconductor-sector optimism is the clearest cited catalyst.