Tech billionaires saw massive single-day wealth gains Monday as Wall Street rebounded sharply, according to Benzinga. Elon Musk added $2.7 billion, while Mark Zuckerberg and Jeff Bezos gained $6.55 ...

Mark Hackett, Chief Market Strategist at Nationwide, explains how investor sentiment drives subtle oil and defense stock moves, tech rallies on valuation caution, and how a weaker dollar supports ...