Goldman Sachs says US exceptionalism in stocks will persist despite the S&P 500's underperformance this year. Goldman notes that US firms' higher R&D investment boosts growth in the long term.

In its first quarter (Q1) earnings, The Goldman Sachs Group, Inc. (NYSE: GS) - a global investment bank also deemed a “Global Systemically Important Bank” (G-SIB) - continues to retain its standing as ...