Top 10 AI Stocks 2026 Refresh: The Build Got Wider

Model-weighted December Top 10 returned ~34% over six months, equal-weight ~36% vs S&P 10.5%; eight of ten winners, two losers (NICE, BABA); top performers ~+130%, TSM +42%

Thesis update - chokepoints widened from compute and networking to high-bandwidth memory and optical interconnects; chips are now stacked, memory-heavy systems demanding more process intensity, prompting three swaps

Micron (MU) promoted - fiscal Q2 revenue $23.86B, guided next quarter to ~$33.5B, gross margin ~81%, booked full 2026 HBM supply, dividend +30%, ROIC 30%, forward multiple <8, market cap >$1T

Lam Research (LRCX) promoted - wafer fab equipment spend tracking $110B in 2025 toward $135B in 2026, advanced packaging revenue guide +40%, ROIC 47%, Piotroski 8, operating margin 35%

Marvell (MRVL) promoted: custom AI accelerators for hyperscalers like Amazon, plus optical engines for rack interconnects. Up ~227% in a year, essential as data centers shift to photonics.

In December I published a Top 10 AI stocks built on one idea: that the artificial intelligence boom would pay out at its chokepoints, not its headlines. Six months later the basket roughly tripled the S&P. The thesis worked.

So why am I removing three names from it.

Because the building got wider than the blueprint.

When I called the facilities manager back, the same one whose data center anchored the original December piece, he told me they had stopped counting GPU racks but started counting two new things: memory modules behind each GPU and the optical links between them. "The chips show up first, but they sit there until we get the memory and the cables. We are waiting on those now." That sentence is the entire refresh.

Top 10 AI Stocks 2026 Refresh: The Build Got Wider

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