Six out of seven conditions are met for a stock-market bubble, this strategist says. - MarketWatch

1. UBS warns of impending market bubble conditions, highlighted by tech dominance. 2. Nvidia's P/E ratios are high, reflecting broader tech sector valuation concerns. 3. Retail investors are increasingly speculating on assets, feeding potential market instability. 4. Monetary policy remains tight despite some rate cuts, conflicting with bubble concerns. 5. Earnings growth slowdown pressures overall market stability, affecting companies like Nvidia.