Just caught something interesting in the latest semiconductor earnings. Taiwan Semi just crushed their Q4 numbers and raised full-year capex guidance to $52-56 billion, which is massive compared to last year's $40.9 billion. This kind of spending signals serious confidence in AI infrastructure demand continuing through 2026 and beyond. Wall Street is clearly positioning for what could be a strong year for AI-related stocks.

What caught my eye is how this creates a real opportunity window right now. The S&P 500 tech sector is projected to grow earnings by 20% this year, with overall market earnings expansion hitting 12.8%. That's the kind of backdrop where quality AI plays tend to perform well. Fed policy looks supportive too—inflation is cooling and rate cuts seem likely, which historically fuels tech rallies.

I've been looking at a couple specific names that seem undervalued given the tailwinds. Vertiv is one that doesn't get enough attention. They work directly with Nvidia solving the unglamorous but critical infrastructure problems in AI data centers—power, cooling, heat management. The stock pulled back about 12% from October highs even as the sector rallied. What's interesting is their revenue is expected to hit $12.43 billion by 2026, more than doubling from 2022 levels, with EPS potentially climbing from $0.53 in 2022 to $5.33 by next year. That's serious earnings acceleration. Trading at 25% discount to recent highs with a Zacks Rank 2 rating, it looks like a pick worth considering before Q4 earnings drop on February 11.

Then there's AMD. Everyone focuses on Nvidia, but being second in the AI chip race is actually a solid position when the total market is expanding this fast. AMD is targeting greater than 35% revenue CAGR over the next three to five years with over $20 non-GAAP EPS target. Revenue is expected to hit $43.43 billion by 2026 versus $25.8 billion in 2024. The stock has had an incredible run—up roughly 97% in the past 12 months—but analysts still see 28% upside from current levels. It recently found support near its 21-week moving average, and at 40X forward earnings it's trading at a 50% discount to five-year highs. That technical setup could set up a move higher.

The broader point is that the AI infrastructure buildout is real and still in early innings. These best AI stocks to buy right now aren't just momentum plays—they have actual earnings growth backing them up. Whether it's the picks and shovels plays like Vertiv or the chip designers like AMD, there's solid fundamental support for this sector heading into 2026. Worth doing your own research, but this is the kind of environment where quality AI exposure tends to pay off.