(Image credit: Joan Cros/NurPhoto via Getty Images) Stocks jumped out of the gate Thursday, boosted by another big day of gains for mega-cap tech stocks and a red-hot initial public offering (IPO). Market participants also cheered encouraging headlines from China, where President Donald Trump and his entourage of CEOs traveled for a two-day summit with President Xi Jinping to discuss trade, tariffs and the war in Iran. At the close, the blue-chip Dow Jones Industrial Average was up 0.8% at 50,063. The broader S&P 500 added 0.8% to 7,501 and the tech-heavy Nasdaq Composite gained 0.9% to 26,635 — new all-time highs. A well-received earnings report from Cisco Systems ( CSCO ) created tailwinds for all three indexes, with the Dow Jones stock soaring 13.4% after its results, its best day since 2020. From just $107.88 $24.99 for Kiplinger Personal Finance Become a smarter, better informed investor.…