LPL Research Last Updated: April 17, 2026 LPL Research provides its Weekly Market Performance for the week of April 13, 2026. Markets posted a strong weekly advance as easing geopolitical tensions, solid earnings reports, and better-than-expected inflation signals fueled a risk-on tone. U.S. equities notched record highs on optimism around Middle East ceasefire developments and abating energy supply concerns, alongside upbeat artificial…