US equities lean bullish across most horizons in the latest published research, but a meaningful bearish minority around chips, AI infrastructure, and index concentration keeps the debate live.
The bull case, as several research notes argue: post-holiday momentum is returning to tech and storage names; historically depressed consumer sentiment has often preceded above-average S&P 500 returns over the following year; 2027 earnings estimates keep drifting higher (one published view sees them climbing toward $420); and the US may be entering an early-cycle expansion where leadership broadens from megacap tech into consumer discretionary, transports, regional banks, and biotech.
The bearish camp, per a separate thread of recent research, flags semiconductors and AI infrastructure as overextended — one widely-circulated view expects a 30% correction in some chip names over 4–8 weeks. Others warn that AI-driven index concentration leaves the S&P 500 fragile if passive flows reverse, with one contrarian forecast calling for a 50% drawdown within months.
On single names, published bullish takes cite Meta on AI cloud monetization and Tesla on California's EV rebate expansion.