Goldman Sachs chief executive David Solomon told the Economic Club of New York that investors are showing stronger appetite for risk than caution, describing markets as having 'more greed than there is fear.' This bullish sentiment has pushed the S&P 500 to record closing highs 11 times last month alone.

Solomon's comments come as Wall Street prepares for massive technology IPOs from companies including SpaceX, OpenAI and Anthropic - deals that Goldman hopes to lead. He pointed to Alphabet's recent $80bn equity raise as evidence that markets can absorb major offerings, noting the stock's muted 2% decline showed strong demand for capital-intensive growth projects.

The AI investment boom continues driving tech stock gains, with the Nasdaq Composite surging 30% since March. Memory-maker Sandisk leads the pack with a 630% gain this year, while Micron and Dell have climbed 265% and 250% respectively. Semiconductor and server companies are benefiting from increased AI infrastructure spending.

Despite the optimism, Solomon warned that market sentiment can shift rapidly from greed to fear. The S&P 500's strong performance follows its 5% first-quarter pullback, suggesting investors have largely moved past earlier concerns about inflation and oil prices.