Can the Bull Market Keep Its Winning Streak? Wall Street's 2026 Predictions Are All Over the Map

The bull market has been on a three-year tear, and Wall Street is basically asking: “Can this thing keep going?” Spoiler alert: the answers range from “absolutely crushing it” to “maybe pump the brakes.”

Here’s the deal. The S&P 500 wrapped up 2025 up about 18%, following back-to-back 24% and 23% years. The Nasdaq? Up 22.3%. Even the Dow got in on the action with a 14.5% gain. That’s not just good—that’s “tell your friends at the coffee shop” good.

But here’s where it gets spicy. Valuations are absolutely bonkers. The Shiller P/E ratio is sitting near all-time highs at 40.59, and the S&P 500’s trailing P/E is 31—the highest since 2020. The Nasdaq 100 is trading at 34 times earnings. Translation: stocks are expensive, and everyone knows it.

So what happens in 2026? Wall Street’s crystal ball is fuzzy.

The Optimists: Oppenheimer thinks the S&P 500 hits 8,100 (that’s a 17% gain). Morgan Stanley is calling for 7,800 (12.5% gain). Their reasoning? Corporate earnings are crushing it, AI is still the golden goose, and the Fed’s rate cuts should keep the party going.

The Middle Ground: JP Morgan says 7,500 (8% gain). They acknowledge valuations are “undoubtedly rich” but argue that profit growth has been impressive enough to justify it. Fair point.

The Skeptics: Bank of America is the wet blanket, predicting just 7,100 (2.6% gain). They’re watching for a shift from consumption-driven growth to capital expenditure-driven growth—basically, they think the easy money’s already been made.

The real question nobody can answer: Is AI going to keep fueling gains, or are we about to hit a valuation wall? That’s the million-dollar question. Or in this case, the trillion-dollar question.